Downloads

Coated slanted gratings can be configured easily within VirtualLab. This use case explains the available options for the customization of slanted gratings.

Configuation, Slanted Gratings, Feature Use Case, Inclusion of Gratings, Imaging Systems

Use Cases

By placing a rotated rectangular aperture behind input fields with different sizes, the PSF and MTF in the focal plane are investigated.

Advanced PSF & MTF, Calculation, System, Rectangular Aperture, Imaging Systems

Use Cases

An imaging system consisting of a collimation objective and human eye is modeled, and by changing the illumination conditions, the cases with fully and partially illuminated apertures are investigated.

Advanced PSF & MTF Calculation, Imaging System, Near-eye displays, Virtual & Mixed Reality, Waveguide HUDs

Use Cases

When a linearly polarized Gaussian beam is focused by a high-NA aspheric lens, the PSF in focal plane shows asymmetry due to vectorial effects.

Advanced PSF, Calculation, High-NA, Lens System, Advanced PSF & MTF, Imaging Systems

Use Cases

An Offner system that consists of two concentric spherical mirrors is built up and its imaging property is investigated by using the non-sequential field tracing in VirtualLab.

Analysis, Offner System. Non-Sequential Field Tracing, Advanced PSF & MTF, Imaging Systems

Use Cases

The Fourier modal method (FMM) can be used to analyze grating efficiencies rigorously in VirtualLab Fusion.

Fourier Modal Method, Blazed Grating Analysis, Monochromators, Optical Metrology

Use Cases

For a folded waveguide-based imaging system, the multiple apertures effect, including in- and outcoupling gratings and pupil aperture, is shown to affect the PSF and MTF on image plane.

Analysis, Folded Imaging System, Multiple Apertures, Near-eye displays, Waveguide HUDs, Virtual & Mixed Reality

Use Cases

To evaluate the image quality of a near-to-eye display system, it is important to include the influence from the waveguide structure. In this example, both planar and curved waveguide are investigated.

Analysis, Folded Imaging System, Planar Wavguide, Curved Waveguide, Near-eye displays, Waveguide HUDs, Virtual & Mixed Reality

Use Cases

Different slanted grating geometries are selected from literature, with varying slant angle, fill factor, and modulation depth, and the diffraction efficiencies are calculated with the Fourier modal method (FMM).

slanted gratings, slanted grating, lightguide, coupling, gartings, VirtualLab, LightTrans

Use Cases

High-NA objective lenses are widely used in optical lithography, microscopy, etc. Consideration of the vectorial nature of light in the simulation of the focusing is therefore fundamental.

high-na, vectorial effects, vectorial component, VirtualLab, LightTrans

Use Cases

This use case demonstrates how easy it is to convert a set of chromatic fields sets into an animation from a parameter run.

MISC.0027, camera detector, chromatic fields set, animation, parameter run

Use Cases

In VirtualLab, the variation of parameters of optical systems are freely customizable by using the programmable mode of the parameter run feature. In an example, the application of this programmable mode is presented.

Parameter Run,

Use Cases

Non-sequential field tracing is done with two steps in VirtualLab Fusion. Firstly, according to an adjustable accuracy factor, the light path through the system is detected. This light path finding can be controlled by the corresponding accuracy factor.

MISC.0052, Non-sequential, field tracing, light path, Channel Resolution Accuracy

Use Cases

With the flexible channel control in VirtualLab Fusion, one can easily switch between sequential and non-sequential tracing, and can control the non-sequential tracing configuration.

non-sequential, tracing, waveguide, grating, surface, Using, Interfaces, VirtualLab, LightTrans

Use Cases

It is demonstrated that the fringe contrast in a Michelson interferometer with light source of certain bandwidth varies when the optical path difference changes.

Coherence Measurement, Michelson Interferometer, Fourier Transform, Spectroscopy

Use Cases

High-power laser diodes often exhibit asymmetric divergence and astigmatism. Collimation of such a laser diode is investigated with both ray tracing and field tracing.

Collimation, Astigmatic Diode Laser Beam, Laser Beam, Objective Lens, Laser Systems, Beam Delivery

Use Cases

For the task of coupling light into a single-mode fiber, two commercially available lenses are selected, and their performance is evaluated using the overlap integral.

Lens, Fiber Coupling, Beam Delivery, Laser Systems

Use Cases

In VirtualLab Fusion, grating structures can be configured by using a stack. In this use case the configuration of grating structures based on interfaces is explained.

Configuration, Grating Structures, Using, Interfaces, VirtualLab, LightTrans

Use Cases

In the VirtualLab’s Grating Package grating structures can be configured by using a stack. In this use case the configuration of grating structures based on media is explained.

Inclusion of Gratings, Imaging Systems, Configuration, Grating Structures, Media, Incusion of Gratings, Imaging Systems

Use Cases

In VirtualLab Fusion, complex 3D grating structures can be configured using stacks. This use case is focused on the configuration of grating structures which exhibit two-dimensional periodicity.

MISC.0050, Grating, 3D grating, pillar, cone, stack, grating structures, two-dimensional, periodicity

Use Cases

With the fast-physical-optics simulation technique in VirtualLab Fusion, conical refraction from a KGd crystal is demonstrated.

Conical Refraction, Biaxial Crystals, Crystal Modeling, Laser Systems

Use Cases

VirtualLab allows the specification of a graded-index lens in a very user friendly way. In addition such index modulated lenses can be analyzed by ray tracing as well as field tracing.

Construction, Modeling, GRIN, Graded-Index Lens, Advanced PSF & MTF, Imaging Systems

Use Cases

This Use Case shows how to construct a pyramid-like surface by using the programmable surface in VirtualLab Fusion.

truncated, pyramid, surface, VirtualLab, LightTrans

Use Cases

A hybrid imaging system consisting of both refractive and diffractive lenses is analyzed, especially, with the undesired diffraction orders of the diffractive lens taken into account.

Correction, Chromatic, Aberration, Diffractive Lens, Diffractive Lenses, Imaging Systems

Use Cases

The parameter coupling feature of VirtualLab can be used to define the coupling of each parameter of an arbitrary optical setup, which helps create complex relations of these parameters.

Parameter, Coupling, Katze, Fuchs

Use Cases

VirtualLab provides multiple tools to implement your custom sources, components, detectors etc. For documentation of such customized object the snippet help can be used.

programmable, customizable help, VirtualLab, LightTrans, Use Case

Use Cases

We present a customized detector which calculates the grating diffraction efficiencies over a user-defined incident-angle range, and also delivers the mean value and contrast of the efficiencies.

detector, lightguide, coupling, grating, customized, VirtualLab, LightTrans

Use Cases

A module in VirtualLab Fusion is generated to calculate the range of the period of a coupling grating, so to fulfil the guiding condition of lightguides.

Customized Module, Grating, Period, Calculation, Lightguides

Use Cases

A physical-optics-based simulation of Czerny-Turner setup, which consists of parabolic mirrors and blazed grating, is presented.

Czerny-Turner, Monochromator, Monochromators, Optical Metrology

Use Cases

Data is often stored in the form of .txt, .csv, .bmp etc. VirtualLab Fusion supports to import these data forms and store them into Data Array. VirtualLab Fusion supports also to save and load the settings of the import for multiple import sessions.

MISC.0025, import, data forms, Data Array, import sessions

Use Cases

Fourier modal method is applied for the rigorous evaluation of non-paraxial diffractive beam splitters, which are initially designed by using IFTA and thin-element approximation.

Design, Rigorous Analysis, Non-Paraxial Diffractive Beam Splitter, Beam Splitter, Diffractive Optics, Light Shaping

Use Cases

Two diffractive diffusers, with continuous or discrete phase, for generating a LightTrans trademark are designed, and their performance is investigated.

Design, Diffractive Diffuser, LightTrans Mark, Diffusers, Light Shaping

Use Cases

Designing of high-NA dot-projection system is of great practical use. In this example, a single phase plate for generating a 24,000 dots random pattern is designed.

VirtualLab, LightTrans, high-na, beam splitter, random pattern

Use Cases

With the user-friendly design tools in VirtualLab, a refractive beam shaper for shaping a fundamental Gaussian beam into top-hat profile is designed and analyzed.

Refractive, Beam Shaper, Circular Top-Hat, Refractive Optics, Light Shaping

Use Cases

The iterative Fourier transfrom algorithm (IFTA) in VirtualLab enables customized beam splitters design with high efficiency and flexibility.

IFTA, Beam Splitter, 2D Light Mark, Diffractive Optics, Light Shaping

Use Cases

When SLMs are often employed as programmable diffractive optical elements, the influence from the pixel gaps on the system performance is investigated.

Diffraction of Pixels, SLM, Diffractive Optics, Light Shaping

Use Cases

A physical-optics-based simulation of Czerny-Turner setup, which consists of parabolic mirrors and blazed grating, is presented.

Czerny-Turner, Analysis, Diffraction, Efficiency, Monochromators, Optical Metrology

Use Cases

A physical-optics-based simulation of Czerny-Turner setup, which consists of parabolic mirrors and blazed grating, is presented, particularly with the higher diffraction order taken into account.

Czerny-Turner, Diffraction, Order Overlap, Monochromators, Optical Metrology

Use Cases

With the Electromagnetic Field Detector the user can access the fully vectorial electromagnetic field at any given plane in the system. We explain here how to handle this detector.

MISC.0035, Electromagnetic Field Detector, vectorial

Use Cases

With the perfectly matched layers (PMLs) technique, the interaction between a focused Gaussian beam and nanocylinders with varying diameters is investigated.

MISC.0045, Nanocylinder, Electromagnetic field, Maxwell, Rigorous, Perfectly matched layers, PML, Scattering

Use Cases

An optical metrology system with a silica spaced etalon is set up to measure the sodium D lines in VirtualLab Fusion. The influence of the number of multiple back reflections on the convergence of the result is investigated.

Sodium D Lines, Etalon, Optical Metrology, Spectrometer, Fabry-Pérot

Use Cases

This document shows a programmable module that can export any kind of Harmonic Fields Set into ASCII files.

export, harmonic fields, ascii, VirtualLab, LightTrans

Use Cases

VirtualLab Fusion can export smooth and quantized interfaces, as well as mirror/prism/grating cells arrays into various file formats, e.g., STL and GDSII file format.

Export, Fabrication Data, Feature Use Case, Light Shaping, Refractive Optics

Use Cases

Variation of parameters of an optical system can be done by using VirtualLab Fusion’s parameter run. In this use case the export of the provided results of the parameter run is explained.

MISC.0064, parameter run

Use Cases

VirtualLab supports the export of optical components specified in the system into various CAD formats. This includes for example the export of lenses, prisms, mirror systems and other components into STL and in IGES format.

Export, Systems, Components, STL, IGES, Format, LightTRans, VirtualLab

Use Cases

The propagation of an 5 fs pulse through seawater is studied in VirtualLab. The broadening of the pulse and the change in its temporal profile due to dispersion of the material are shown.

Femtosecond Pulse, Propagation, Dispersive Sweater, fs pulse modeling, Laser Systems

Use Cases

A Fizeau interferometer is built up with the help of non-sequential tracing technology, and the interference fringes from several different test surfaces are shown.

Fizeau Interferometer, Optical Testing, non-sequential

Use Cases

In optical modeling, a finite region is often used as the area for further operation. VirtualLab Fusion supports to generate regions in different manners with great ease.

MISC.0026, finite region, analytic region, sampled region

Use Cases

A laser diode with asymmetric divergence and astigmatism is first collimated and then focused. Evolution of the field in the focal region is investigated in detail.

Focus Investigation, Aspherical Lens, Beam Delivery, Laser Systems

Use Cases

The focusing process of a 10 fs pulse by using a high-NA parabolic mirror is modeled in VirtualLab, and both the spatial and temporal behaviors are investigated.

Focusing, Femtosecond Pulse, High-NA, Off-Axis, Parabolic Mirror, fs pulse modeling, Laser Systems

Use Cases

With a low-coherence Xenon lamp source, a Michelson interferometer is build up for precise scanning of the surface profile of a given specimen.

Optical Topography, Scanning, Interferometry, Optical Metrology

Use Cases

The variation of the focal length due to thermal lens effect and the changes of focal spot diameter are demonstrated with respect to the input laser power.

Gaussian Beam, Focused, Thermal Lens, Beam Delivery, Laser Systems

Use Cases

With a Mach-Zehnder interferometer setup with two rotatable polarizers, we demonstrate the generation of spatially varying polarization.

Spatially Varying, Polarization, Interference, Polarized Light

Use Cases

A workflow is presented how to optimize a grating structure regarding a specified merit function using VirtualLab Fusion and the optimization software optiSLang.

grating, optimization, VirtualLab Fusion, optiSLang

Use Cases

In VirtualLab Fusion, the Grating Order Analyzer can be used for convenient grating diffraction analysis, with results presented in various ways.

Rayleigh coefficients, Feature, Grating order, analyzer, analyser, Imaging Systems, Inclusion of Gratings

Use Cases

Non-sequential field tracing for the PSF calculation of Herrig Schiefspiegler Telescope, including double-pass between two mirrors, takes less than 10 seconds.

Herrig Schiefspiegler Telescopes, Advanced PSF & MTF, Imaging Systems

Use Cases

In high-NA focusing situations, e.g. with parabolic mirror, it is demonstrated that input fields with polarizations leads to different focal spots.

High-NA, Focusing, Off-Axis Parabolic Mirror, Advanced PSF & MTF, Imaging Systems

Use Cases

A two diffractive beam splitter system for high-NA pattern generation is designed with IFTA, and the system performance is investigated, especially with the non-paraxial splitter analyzed by using FMM.

High-NA, Pattern Generation, Combining, Two Beam Splitter Elements, Virtual & Mixed Reality

Use Cases

In this document we present a clear workflow for how to configure a simulation so that diffraction effects are accounted for or disregarded in a physical optics simulation.

MISC.0048, Configuration, simulation, diffraction effects, field tracing

Use Cases

Using laterally shifted modes is one possible strategy to mimic partial spatial coherence. In this tutorial we show you how to manipulate the positions of the source modes via programming.

source modes, programming, spatial coherence, programmable, Lighttrans, use case, virtuallab

Use Cases

With the scanning source in VirtualLab, we analyze the performance of an F-Theta lens, by measuring the focal spot position deviation and the spot size for different scan angles.

Panel-Type, Source, Set Up, Customization

Use Cases

The scanning source in VirtualLab defines a multi-mode source that radiates into several pre-defined directions, which is of help in e.g. in a laser scanning system.

Scanning, Source, Set Up

Use Cases

In this tutorial we explain the basics of working with the C# Module: one of the most flexible, most advanced programmable items in VirtualLab Fusion!

programmable, VirtualLab, LightTrans, c#

Use Cases

The Programmable Component is one of the most versatile programmable elements in VirtualLab. Follow this tutorial for instructions on a first contact with this feature!

programmable component, ideal grating, VirtualLab, LightTrans

Use Cases

In this tutorial we show how to work with the Programmable Detector, one of the most versatile customizable elements in VirtualLab Fusion.

programmable, VirtualLab, LightTrans, Detector

Use Cases

In this document we explain how to work with the Programmable Function, using the example of a cylindrical lens.

Configuration, Grating Structures, Using, Interfaces, VirtualLab, LightTrans

Use Cases

In this document we explain how to work with the Programmable Interface, using the example of a simple spherical surface.

programmable interface, spherical surface, Interfaces, VirtualLab, LightTrans

Use Cases

This tutorial will give you the instructions you need to program your own sources in VirtualLab!

light source, programmable, VirtualLab, LightTrans, gaussian beam

Use Cases

In this detailed tutorial we explain how to create your own custom materials (refractive index with respect to wavelength) in VirtualLab Fusion.

programmable material, refractive index, custom materials, linear dependence

Use Cases

In this detailed tutorial we explain how to create your own custom media (dependence of refractive index on position) in VirtualLab Fusion.

programmable medium, thermal lens, refractive index, custom media

Use Cases

Discover how to create your own custom spectra via programming in VirtualLab Fusion with this in-depth tutorial on the topic, rounded up with a basic hands-on example.

programmable spectrum, black-box radiation, VirtualLab, LightTrans

Use Cases

A high-NA microscope for imaging of sub-wavelength grating is build up, and the influences from illumination with linear, radial, and azimuthal polarizations is investigated.

Imaging, Sub-Wavelength, Gratings, Vector Beam Illumination, Microscopy, Optical Metrology

Use Cases

Modeling of a complete high-NA imaging system, with sub-wavelength gratings with different profiles as samples under test, is presented.

Imaging, Sub-Wavelength, Gratings, Different Profiles, Microscopy, Optical Metrology

Use Cases

Modeling of a complete high-NA imaging system, with sub-wavelength gratings with varying period as samples under test, is presented.

Imaging, Sub-Wavelenght, Grating, Varying Period, Microscopy, Optical Metrology

Use Cases

Chromatic fields set are standard documents to show a light distribution in VirtualLab Fusion. This use case demonstrates the options for import and export chromatic fields sets.

MISC.0056, Chromatic fields, light distribution, import, export

Use Cases

VirtualLab Fusion can import the Zemax beam file, and convert it into field with full components. After importing, further operation with the field can be applied, e.g. propagation.

MISC.0024, import, Zemax, beam file, propagation

Use Cases

VirtualLab Fusion allows to import optical systems with full 3D position information and glasses from Zemax files. The import enables a user friendly interface between the two software packages.

Import, Optical Systems, Zemax, LightTrans, VirtualLab

Use Cases

The ghost image effect in a collimation lens system is investigated, by checking the effect from the surface coating with the non-sequential tracing technique.

Investigation, Ghost Imaging Effects, Collimation System, Ghost Images, Imaging Systems

Use Cases

For a diffractive beam shaper used together with focusing lens, the influence from lens aberrations on the system performance is investigated.

Lens Aberrations, SLM, Beam Shaping, Setup, Diffractive Optics, Light Shaping

Use Cases

VirtualLab’s Grating Toolbox enables the detailed analysis of grating structures. In this use case the investigation of the polarization state of the diffracted orders is discussed, which is enabled by the applied Fourier modal method (FMM).

Investigation, Polarization, State, Diffraction Orders, VirtualLab, LightTrans

Use Cases

A Michelson interferometer is set up with the help of non-sequential tracing technology in VirtualLab Fusion, and the interference fringes in different configurations are demonstrated.

Laser-Based, Michelson Interferometer, Interference Fringe Exploration

Use Cases

In VirtualLab Fusion you can export a summary of all system parameters in the light path diagram into an XML File. This use case shows how to export the parameters and how to visualize the parameters.

MISC.0028, export, summary, all system parameters, light path diagram, XML, export parameters

Use Cases

As one important issue for near-eye display (NED) design, the propagation of light through waveguide structure with tailored in- and outcoupling gratings can be easily modeled with the help of region and channel concept in VirtualLab Fusion.

Light Propagation, Waveguide, Light Propagation,In- & Outcoupling Surface Gratings, Gratings, Near-eye displays, Waveguide HUDs, Virtual & Mixed Reality

Use Cases

A Mach-Zehnder interferometer is build up in VirtualLab, and it is demonstrated that how the tilt and shift of an optical elements may affect the interference pattern.

Mach-Zehnder, Interferometer, Coherent Light, Interferometry, Optical Metrology

Use Cases

With the Mie solution for electromagnetic plane wave in VirtualLab Fusion, we investigate the scattering effect at spherical particles with different radii and made of different materials.

MISC.0070, Mie solution, Maxwell, Scattering, Scatter, Spherical particle, Rigorous, Electromagnetic field

Use Cases

An image projection system is set up together with the panel-type source. Performance of the system is evaluated by observing the spot grid in both spatial and angular domains.

Image, Projection, Panel-Type, Display

Use Cases

By using the non-sequential field tracing technique, several configurations of etalons, e.g. with non-parallel surfaces and curved surfaces, are analyzed.

Modeling, Etalon, Planar Sruface, Curved Surface, Near-eye Display, Waveguide HUDs, Virtual & Mixed Reality

Use Cases

VirtualLab provides a physical-optics modeling technique for light propagation through GRIN media, which includes fully electromagnetic information and runs as fast as ray tracing.

Grin, graded-index, electromagnetic field,

Use Cases

A fast approach for light propagation through GRIN medium, which includes the polarization crosstalk effect, is implemented, and its validity and advantages are shown in comparison with rigorous solver.

Modeling, GRIN, Graded-Index, Multimode Fiber, Beam Delivery, Laser Systems

Use Cases

The imaging properties of microlens array with different lens shapes are investigated. Change of the focal spots with respect to aberration of input field is demonstrated.

Modeling of Microlens Array with Different Lens Shapes, Microlens and microcell arrays, Light Shaping

Use Cases

A module is programmed to measure the FFT execution time for a quadratic field with different numbers of sampling points, in float and/or double precision.

fft, measurement, fourier transform, VirtualLab, LightTrans

Use Cases

Following simulation settings will be explained in more detail: Global accuracy (Field Tracing 2nd Generation) and non-sequential field/ray tracing.

Simulation, VirtualLab, Settings, Ray Tarcing, Field Tracing, Ghost Images, Imaging Systems

Use Cases

By using the non-sequential tracing technique in VirtualLab, the ray tracing analysis of a glass plate is performed.

Non-sequential, Ray Tracing, Glass Plate, Near-eye display, Virtual & Mixed Realtiy, Waveguide HUDs

Use Cases

Gouy phase shift, which is a pi phase term, can be observed by a Mach-Zehnder interferometer. The interference along optical axis is constructive before focus, while destructive behind focus.

Observation, Gouy Phase Shift, Mach-Zehnder Interferometer, interferometry

Use Cases

A complete wafer inspection system including high-NA focusing effect and light interaction with microstructures is modeled, and the formation of image is demonstrated.

Optical System, Inspection, Micro-Structured Wafer, Inclusion of Gratings, Imaging Systems

Use Cases

In this example, we select one commercially available lens and show how to find the optimal working distance to obtain maximum fiber-coupling efficiency by using field tracing.

single-mode fibers, coupling light, fibers, VirtualLab, LightTrans

Use Cases

With the rigorous Fourier modal method (FMM) in VirtualLab Fusion and evolutionary algorithm in optiSLang, we demonstrate the optimization of a binary grating for waveguide coupling for desired field of view (FOV).

Optimization, Binary Grating, Lightguide Coupling, FOV

Use Cases

We demonstrate the design workflow for optimizing a rectangular grating for one specific incidence direction to obtain maximum efficiency for a specific diffraction order.

Optimization, Lightguide Coupling, Grating, Single Direction

Use Cases

We optimize a slanted grating for waveguide coupling over desired field of view (FOV), by using VirtualLab Fusion and optiSLang in combination.

slanted grating, FOV, lightguide coupling, optislang, VirtualLab Fusion

Use Cases

To ensure uniform multiple waveguide output channels, the outcoupling gratings are optimized, with their efficiencies calculated by the rigorous Fourier modal method.

Optimizing, Waveguide, Outcoupling Gratings, Uniform Multiple Channels, Near-eye displays, Waveguide HUDs, Virtual & Mixed Reality

Use Cases

In this use case we will explain the advanced orientation setting for gratings within a grating region. Currently grating regions are only available within the waveguide toolbox.

MISC.0059, advanced orientation setting, grating region, waveguide toolbox

Use Cases

Detectors are a fundamental part of any optical system. In this document you may find an overview of the detectors which are readily available in VirtualLab Fusion.

MISC.0049, Detectors, customization, dot diagram, field look, detector plane

Use Cases

A slanted grating optimized with the rigorous Fourier modal method to achieve high diffraction efficiency for the sake of incoupling into light guide structures.

Parametric, Optimization, Tolerance Analysis, Slanted Gratings, Inclusion of Gratings, Imaging Systems

Use Cases

In VirtualLab Fusion, users can easily construct a two-mirror laser resonator, and use parametric optimization to design this resonator to generate a desired output mode.

MISC.0014, two-mirror, laser resonator, parametric optimization

Use Cases

We present the design of a fiber-coupling lens with conical surface, for the purpose of efficient light coupling into a single-mode fiber, using parametric optimization in VirtualLab Fusion.

Parametric Optimization, Fiber Coupling, Lens, Beam Delivery, Laser Systems, Katze, Fuchs

Use Cases

A scanning system consisting a dual-axis galvanometer and an aspherial focusing lens is modeled, with the rotation of the mirrors taken into simulation as in the practical case.

Performance Analysis, Laser Scanning System, Scanning Systems, Laser Systems

Use Cases

With the scanning source in VirtualLab, we analyze the performance of an F-Theta lens, by measuring the focal spot position deviation and the spot size for different scan angles.

Performance, Evaluation, F-Theta, Scanning, Lens

Use Cases

The conversion of polarization of a linearly polarized light in calcite crystal is demonstrated in VirtualLab.

Polarization Conversion, Uniaxial Crystals, Crystal Modeling, Laser Systems

Use Cases

Demonstration of polarizer effect in the focal region, with high-NA illumination.

Polarizer, Focal Regions, Crystal Modeling, Laser Systems

Use Cases

In VirtualLab Fusion, users can select which information of position and orientation to be shown. This use case shows how to set up the position and orientation information display in a Light Path View.

MISC.0015, position, orientation, information display, Light Path View

Use Cases

Discover how to create your own custom spectra via programming in VirtualLab Fusion with this in-depth tutorial on the topic, rounded up with a basic hands-on example.

programmable component, free-space propagation, VirtualLab, LightTrans

Use Cases

VirtualLab Fusion offers the option to define optical component by programmable elements. This use case explains the usage of code snippets for programmable light source, interface, function and medium.

programmable, source code editor, interface function, medium, light source, VirtualLab, LightTrans, Use Case

Use Cases

This example shows how to use Programmable Pulse Spectrum to generate a chirped Gaussian pulse, with the pulse specification given in time domain.

programmable, VirtualLab, LightTrans, gaussian pulse spectrum, gaussian

Use Cases

Based on the fully vectorial electromagnetic field information, a Programmable Detector is done for the calculation of the degree of coherence.

programmable, VirtualLab, LightTrans, Detector, Coherence, Coherence Detector

Use Cases

Based on the full field information, and together with the Programmable Detector, several typically used merit functions in diffractive optics are realized in this example.

programmable, VirtualLab, LightTrans, detector, diffractive, merit

Use Cases

This example illustrate the access on field values in a Programmable Detector via source code, and it calculates the sum of all squared amplitudes on the optical axis including all field components.

detector, square amplitude, optical axis, Lighttrans, use case, virtuallab

Use Cases

A Programmable Detector is constructed for saving a light distribution (harmonic fields set) to the desired file path on the hard disk.

programming detector, automatically, save fields, programmable detector , VirtualLab, LightTrans

Use Cases

In this programming example we illustrate how to code a transmission function that imitates an opaque screen punctured by two round holes.

programming, double pinhole, transmission, VirtualLab, LightTrans

Use Cases

An example snippet is presented for defining a double slit function, with customizable slit width and distance in between.

programmable, double slit, programming, fourier, VirtualLab, LightTrans

Use Cases

This example shows how to realize an array of micro-lenses on a rectangular grid by using the Programmable Interface in VirtualLab Fusion.

Programming, Micro-Lens Array, VirtualLab, LightTrans

Use Cases

Gauging the accuracy of a given result is fundamental in science and engineering. In this use case we show you how to programme a module to compute the standard deviation between two fields.

programmable, VirtualLab, LightTrans, standard deviation, harmonic fields

Use Cases

This programmable module is designed to be applied to the sharp result of a designed structure, and it will round off the edges according to user-specified values.

programmable, VirtualLab, LightTrans, module

Use Cases

In this document you can find an example for the Programmable Function which defines an arbitrary number of equidistant slits with an arbitrary width and distance.

programming, multiple slit, transmission, function VirtualLab, LightTrans

Use Cases

A convex-plano single lens is analyzed by scanning over the radius of curvature and its thickness with the Programmable Parameter Run in VirtualLab Fusion.

scanning, parameter run, programming, VirtualLab, LightTrans, use case

Use Cases

In this document you can find an example for the Programmable Interface. Although the sinusoidal surface is provided ready-made in the catalog, we show you how to code it for illustration purposes.

sinusoidal surface, VirtualLab, LightTrans,

Use Cases

In this example, the generation of sinusoidal volume grating is demonstrated, with the grating period and the refractive index modulation as user-defined parameters.

Programming, Sinusoidal, Volume Grating, refractive index

Use Cases

In the Settings the user can directly define a 2D-Array containing the wavelength-dependent transmittance values, or by loading another array or file by clicking on “Export/Import”.

programming, spectral, band, filter, ASCII, VirtualLab, LightTrans

Use Cases

A truncated cone structure is generated using the Programmable Interface, with its specifications (height, top/base diameter) as user-defined parameters.

Programming, Truncated Cone, Surface, VirtualLab, LightTrans

Use Cases

Using the Programmable Interface in VirtualLab Fusion, an anamorphic surface is programmed and especially with the surface gradient analytically given.

Programming, Anamorphic Surface, customized, customization, VirtualLab, LightTrans

Use Cases

In this programming example we illustrate how to use the Programmable Function in VirtualLab to create a custom idealised component that performs like an axicon.

axicon, transmission, programming, VirtualLab, LightTrans

Use Cases

See how to create a radially and an azimuthally polarized source, experimenting in the process with the programming of light sources and the potential of the Combined Light Source feature.

light source, programmable, VirtualLab, LightTrans, radial azim, polarization

Use Cases

A physical-optics-based simulation of Czerny-Turner setup consisting of parabolic mirrors and blazed grating for Sodium doublet examination, is investigated.

Czerny-Turner Setup, Resolving, Sodium Doublet, Spectrometers, Optical Metrology

Use Cases

With the Fourier modal method and the parameteric optimization in VirtualLab Fusion, we demonstrate the anaylsis and design of anti-reflective moth-eye structures.

GRT.0011, Moth eye, Anti-reflective, Surface reflection, Grating, Diffraction efficiency, Fourier modal method, RCWA, Parametric optimization, VirtualLab, LightTrans

Use Cases

With the rigorous Fourier modal method (FMM), we analyze the effects, especially the phase modulation, of nanopillar structures with varying diameters which are used as the building blocks of metalenses.

GRT.0012, Nanopillar, Nano-pillar, Metasurface, Meta-surface, Phase modulation, Grating, Diffraction efficiency, Fourier modal method, RCWA, VirtualLab, LightTrans

Use Cases

A holographic volume grating is analyzed by using the Fourier modal method. Both the spectral and angular properties are presented.

Simulation, Holographic, Volume Grating, FMM, Fourier modal method, Inclusion of Gratings, Imaging Systems

Use Cases

With the iterative Fourier transfrom algorithm (IFTA) in VirtualLab, design of a phase-only beam shaper for generating a donut mode, with optical vortex phase distribution is presented.

Shaping, Gaussian Laser Beam, Donut Mode, Diffractive Optics, Light Shaping

Use Cases

Design of different types of cells arrays, which are used behind white light LED for generating customized patterns, are presented.

Shaping, White Light, Prism, Grating, Mirror Cells Array, Microlens and microcell arrays, Light Shaping

Use Cases

When a linearly polarized beam is focused by a high-NA lens, the focal spot shows asymmetry due to the relatively strong E(z) component.

Simulation, Laser Beam, Focal Region, High-NA, Asphere, Beam Delivery, Laser Systems

Use Cases

A complex 2D exit pupil expander, which consist of both idealized and real gratings, is constructed and modeled, and the uniformity at the waveguide exit plane is presented.

Simulation, Waveguide, Complex 2D Exit Pupil Expansion, Near-eye displays, Waveguide HUDs, Virtual & Mixed Reality

Use Cases

The source code editors is the most important structure of all programmable objects. This use case introduces the general structure of the source code editor.

CZT.0002, Catalogs, programmable objects, programmable source, interface, medium, detector, C#, c sharp, source code editor

Use Cases

In modern optical systems gratings often appear edged into or deposited onto other elements. Here we cover how to characterise their efficiencies rigorously or by inputting the values ad hoc.

MISC.0037, gratings, grating region

Use Cases

The waveguide component allow to define an arbitrary set of grating regions per surface. Per grating region several parameters can be defined. The user can specify a set of selected orders for each grating region.

diffraction orders, VirtualLab, LightTrans, waveguide,

Use Cases

By using an idealized non-paraxial polarizer model, the interaction of a polarizer with incident wave from different angles is investigated, and the results are characterized by Stokes parameters.

Stokes Parameters Measurement, Tilted Polarization, Crytal Modeling, Laser Systems

Use Cases

The stress-induced birefringence in a YAG crystal is investigated, by examining the change of output field with respect to the strength of stresses.

Stress-induced Biregringence, Laser Crystals, Crystal Modeling, Laser Systems

Use Cases

In VirtualLab Fusion the user can design phase functions, which works as beam shaper, beam splitter and diffuser. This use case shows the usage of the structure design tool, which can be used to convert the phase function into a height profile.

MISC.0060, beam shaper, beam splitter, diffuser, structure design tool

Use Cases

VirtualLab enables the user to build up an optical system once and analyze it with different tracing techniques. This use case demonstrates how the non-sequential analysis of your setup can be performed.

System Analysis, Sequential Field Tracing, Non-Sequential Field Tracing, Feature Use Case, Near-eye displays, Virtual & Mixed Reality

Use Cases

With the region concept in VirtualLab, apertures with arbitrary shapes can be defined flexibly. Situations with fully and partially illuminated apertures are shown.

Tailored Light, Outcoupling, Glass Plate, Near-eye display, Waveguide HUDs, Virtual & Mixed Reality

Use Cases

VirtualLab Fusion supports various possibilities for customization. This use case shows how to specify arbitrary effects to equidistant or non-equidistant field data as an optical component within optical systems.

CZT.0004, Customization, arbitrary effects, equidistant, non-equidistant, field data

Use Cases

In a fiber-coupling optical setup, the coupling efficiency is analyzed with respect to different tolerance factors like the shift of the position of the fiber end and the tilt of lens.

fibers, VirtualLab, LightTrans, fiber coupling

Use Cases

The polarization-dependent properties of ultra-sparse dielectric nanowire grids are analyzed by using the Fourier modal method (FMM).

Ultrasparse, Dielectric, Nanowire, Grid, Polarizer, Inclusion of Gratings, Imaging Systems

Use Cases

In the advanced imaging system, when the exit pupils are repeated, uniformity of the energy of these exit pupils is an important merit function to evaluate the quality of the optical system. This use case shows how to use the uniformity detector.

MISC.0047, imaging system, uniformity, merit function, uniformity detector

Use Cases

The Camera Detector constitutes one of the most fundamental detectors in VirtualLab Fusion. Keep reading for an in-depth description of how to configure and use this detector in simulations.

MISC.0036, Camera Detector, visualize, energy density distribution, configuration

Use Cases

VirtualLab Fusion provides an analyzer for the distortion of an optical system that yields the standard representation of distortion versus angle.

MISC.0038, analyser, distortion, standard representation, angle, spherical lens

Use Cases

In VirtualLab Fusion, the field curvature of a lens component can be analyzed precisely, with the field curvature analyzer used. This use case shows how to set up the parameters in the field curvature analyzer.

MISC.0034, field curvature, curvature analyzer, field curvature analyzer, lens component, sagittal plane, tangential plane

Use Cases

The focal length is an important parameter to evaluate an imaging system. By using the Focal Length Analyzer, the effective and back focal length of optical components can be obtained and used with parametric optimization.

focal length, analyzer, Optical Interface Sequence, OIS, VirtualLab, LightTrans

Use Cases

Point spread function (PSF) and modulation transfer function (MTF) are important optical quantities to evaluate the quality of an imaging system. In VirtualLab Fusion, PSF and MTF for an imaging system can be calculated fast and accurately.

VirtualLab, LightTrans, PSF, MTF, Detector

Use Cases

Via Parameter Run in VirtualLab Fusion, one can specify varying of selected parameters flexibly and so to perform system analysis e.g. tolerancing.

parameter run

Use Cases

In lens design, the aberration information in the lens system is important for the optimization process. In VirtualLab Fusion, detectors for different kinds of wave aberration representation are provided.

MISC.0051, lens design, aberration information, optimization, wave aberration

Use Cases

Wavefront error is defined as the difference between the reference wavefront phase, which is a constant phase or spherical phase, and the detected wavefront phase of one optical system. This use case shows how to handle a wavefront error detector in VirtualLab Fusion.

Wavefront, Error Detector, LightTrans, VirtualLab

Use Cases

A Michelson interferometer with Xenon lamp source is modeled, with the spectral property, i.e. limited coherence length, of the source fully taken into account.

Michelson, Interferometer, Interferometry, Optical Metrology

Use Cases

In this work we offer a k-domain-based method for the fast calculation of fields propagating through GRIN media.

k-domain, fast propagation, electromagnetic fields, graded-index media

Talks

We therefore introduce the concept of geometric and diffractive zones of fields. We describe and demonstrate design techniques for different applications of light shaping, including smooth and micro-structured surfaces, for different types of sources.

light shaping, diffractive, electromagnetic, talks, talk

Talks

The application of a lightguide in combination with grating regions is definitely a good candidate and we will discuss the concept, challenges and our current strategies to deal with them.

XR glasses, FOV, lightguides

Talks

The Local Plane Interface Approximation (LPIA) algorithm, a free space propagation algorithm and the Fourier Modal Method (FMM) are all combined. We analyse the homogeneity of the spot-like illumination interference pattern at the focal plane, which should be accounted for in image processing.

Fast Physical-Optics, Modeling, Microscopy System, Structured Illumination, VirtualLab, LightTrans, talks, LPIA, FMM, talk

Talks

Graded-index (GRIN) media are widely used for different situations. Modelling electromagnetic field propagation in GRIN media is of high importance for optical simulation and design. Based on the concept of fast physical optics, we develop a theory to efficiently propagate the field in GRIN media, including the effect of polarization cross-talk.

fast propagation, electromagnetic, GRIN, graded-index talks, talk

Talks

Graded-index (GRIN) media are widely used for different situations. Modelling electromagnetic field propagation in GRIN media is of high importance for optical simulation and design. Based on the concept of fast physical optics, we develop a theory to efficiently propagate the field in GRIN media, including the effect of polarization cross-talk.

GRIN, graded-index media, graded index, VirtualLab, LightTrans, talks, talk

Talks

In addition to the early-stage microscopy setups, those advanced microscopy in modern optics are often designed with more physical-optics principles involved and they are used for the investigation of more complicated effects/phenomena.

microscopy, lithography, 3D-structured

Talks

We perform a fast-physical optics modeling of two-photon microscopy with 3D-structured illumination.

3D-structured illumination, image processing

Talks

Fast Physical-Optics, Modeling, VirtualLab, LightTrans, talks, talk

Talks

For applications in the field of XR, devices based on light guiding are one beneficial approach to combine the virtual image with the light impinging from the real-world environment.

XR, AR glasses, lightguide, field tracing technology

Talks

With the help of VirtualLab, we will demonstrate several classical physical optics effects, for example, diffraction from slits, Arago spot (Poisson’s spot), Michelson/Mach-Zehnder interferometers, Gouy phase shift, Goos-Hänchen shift, and so on. In addition, we will also show examples like grating diffraction, guided modes in fibers, femtosecond pulse propagation, and related application in modern optics industry.

diffraction, interference, optics education, Arago spots, Michelson/Mach-Zehnder interferometers, Gouy phase shift, Goos-Hänchen shift

Talks

We emphasize on highly efficient solutions to Maxwell’s equations, based on 1) the paradigm shift of switching the main modeling domain from space to spatial frequency domain; 2) innovative Fourier transform concepts that minimize the field sampling parameters. We will present simulations of several typical modern laser systems based on fast physical optics modeling.

modeling, laser system, maxwell, fourier, talks, talk

Talks

The growing importance of diffractive and meta-lenses in modern optical systems makes it vital to investigate and understand their capabilities. They play an important role in various applications like imaging systems, laser-beam shaping, bio/medical-optics, etc.

meta-lenses, FMM, RCWA

Talks

We discuss the implications of the modeling and the design of diffractive and refractive freeform surfaces in non-paraxial regions of the fields to shape the profile of a laser beam in its far field, its focus or any other region.

non-paraxial, refractive laser beam, high na, talks, talk

Talks

VirtualLab Fusion provides different approaches for non-sequential simulations through the entirety or part of an optical system. In non-sequential simulations with both ray and field tracing the user can control which light-propagation paths are to be considered.

non-sequential, field tracing, ray tracing, optical modeling, VirtualLab, LightTrans, talks, talk

Talks

In this talk the modeling of systems for femtosecond pulses is presented, including pulse compression and stretching by grating pairs, focusing by low and high NA systems, walk-off effects and second-harmonic generation (SHG) modeling.

beam delivery, pulsed lasers, laser, cw, VirtualLab, LightTrans, talks, talk, femtosecond, NA, SHG, second harmonic generation

Talks

VirtualLab Fusion supports light shapping by freeform surfaces, diffractive beam splitters and pattern generators, diffusers, and general arrays of micro-optical components, including, but not limited to, micro-lens arrays.

diffractive, freeform, light shapping, VirtualLab, LightTrans, talks, talk, micro lens, microlens, diffractive beam splitters

Talks

In this work, we start with the optimization of coupling gratings for a single incident direction and analyze the effect when such optimized gratings are used in different situations.

Optimization, Coupling Gratings, Lightguide-Based Displays

Talks

Lightguides in combination with gratings seem to be a promising candidate for the development of AR/MR glasses. The design and the modeling of such lightguides is very different to lens design and requires new techniques in modeling.

AR/MR glasses, polarization, in-coupled light, MTV, FOV

Talks

Interferometer-based optical setups play an important role in modern optical metrology for different applications.

Coherence, Optical Systems, Interferometry

Talks

In modern optics, a huge variety of components with specific purposes made from different materials are employed. Birefringent materials are often used for manipulating light in difference aspects. Especially, by analysis in the spatial frequency domain, the effect from birefringence can be clearly revealed and, based on that, we develop a fast numerical algorithm to model light propagation through such components.

birefringent, optical components, Maxwell, VirtualLab, LightTrans, talks, talk

Talks

A diffractive or meta-lens can be modeled as local structures (e.g. local gratings) on a base interface. The rigorous Fourier modal method (FMM) is applied for the local micro-/nanostructures; then the phase modulations at each position can be collected to model the lens function.

Fast Physical-Optics, Modeling, VirtualLab, LightTrans, talks, talk, FMM, meta-lens, diffractive

Talks

Interferometer-based optical setups play an important role in modern optical metrology for different applications.

Interferometer, optical metrology, physical-optics

Talks

Modern interferometer-based optical-metrology technologies play an important role in many applications, and often consist of multi-disciplinary components. We present a physical-optics- based simulation approach.

Fast Physical-Optics, Modeling, interferometry, VirtualLab, LightTrans, talks, LPIA, FMM, talk

Talks

Optical fibers are widely used for collecting and monitoring light signals in modern optical metrology systems. The use of fibers helps reduce the size of optical system and makes the interconnection between systems convenient.

optical metrology, micrometers, optical fibers

Talks

Optical fibers are widely used for collecting and monitoring light signals in modern optical metrology systems. The use of fibers helps reduce the size of optical system and makes the interconnection between systems convenient.

polarization effect, polarizer

Talks

The Fast Fourier transform (FFT) algorithm constitutes the backbone for fast physical optics modelling. In this talk we present the theory of the semi-analytical FFT alongside several examples to demonstrate the great potential of this approach.

FFT, fast fourier transform, field components, VirtualLab, LightTrans, talks, talk

Talks

In this talk we will discuss the modeling and design of laser systems along applications like beam delivery and scanning, speaking also about the peculiarities of including gratings, etalons, graded-index media and crystals in said systems.

laser beam, shapping, diffractive optics, diffractive, VirtualLab, LightTrans, talks, talk

Talks

The well-established ray-tracing concept of Bidirectional Scattering Distribution Function, used traditionally to model the scattering of rays at micro-structured surfaces, serves as the inspiration for what we have called “bidirectional”, or B, operators: a physical-optics generalization that refers not only to the modelling of surface scattering, but of any component in an optical system.

ray tracing, bidirectional scatterin distribution function, b operators, VirtualLab, LightTrans, talks, talk

Talks

Geometrical and physical optics tend to be presented as completely separate from each other, the links between the two tenuously acknowledged at best. However, when they are viewed for what they are it is evident that not only are they not separate, but that in fact the two types of behaviours very often coexist within the same system.

Gouy Phase Shift, Geometric Fourier Transform, VirtualLab, LightTrans, talks, talk

Talks

This document describes how VirtualLab Fusion is installed and how it can be updated. Questions which might occur during installation are being answered.

Administrator's Manual, virtuallab fusion

VirtualLab Fusion Documentation

VirtualLab Fusion 2nd Generation Technology Update (Build 7.5.0.158)

Release Notes, virtuallab fusion

VirtualLab Fusion Documentation

In this document you will get a deep introduction into VirtualLab Fusion.

user manual, virtuallab fusion

VirtualLab Fusion Documentation

In this webinar, we show how to enable non-sequential tracing in VirtualLab and application use cases, which get large benefits from it.

Non Sequential, Physical Optics, Webinars

Webinars

With this document we would like to provide you with a compact overview of VirtualLab Fusion’s theoretical and technological background, in connection with references for a more in-depth study.

White papers, virtuallab fusion, research papers

White Papers