Invitation to LASER World of PHOTONICS

(June 12, 2017)

Our teams at Wyrowski Photonics and LightTrans are operating at full stretch for the last sprint in the preparation for the LASER World of PHOTONICS, which is taking place in Munich from June 26 till 29, 2017. We are very excited to inform you that this event will mark the unveiling of our momentous...

New on Youtube: "Getting Started" VirtualLab Fusion Tutorials

(April 04, 2017)

The channel is a common platform of the Applied Computational Optics Group of the Institute of Applied Physics (Friedrich-Schiller-University), and the companies Wyrowski Photonics and LightTrans International. Here we will provide you with short videos on the theory and concepts of an exciting new ...

VirtualLab training courses in Jena in September 2017

(March 02, 2017)

LightTrans offers its new VirtualLab training courses: "Introduction to VirtualLab Fusion", September 18-19, 2017 "Analysis and Design of Diffractive and Micro Optical Systems”, September 20-22, 2017 NEW: "Introduction to VirtualLab Programming”, September 25, 2017 Deadli...

Laser Systems Design

Waveoptical Simulation and Design of Laser Systems

VirtualLab Fusion enables the optical design and simulation of laser systems for single- as well as multimode, continuous wave (cw) and pulsed laser sources. Laser systems can be designed including lenses, mirrors, diffractive optical elements, gratings and holograms. VirtualLab provides fast and accurate field and ray tracing engines in one software with an intuitive user interface.


  • Beam delivery systems
    collimation, focusing, beam expander [more...]
  • Laser scanning systems
    f-theta lenses, scan mirrors, beam shaping [more...]
  • Fiber systems
    fiber coupling
  • Beam shaping and homogenization
    diffractive and refractive beam shapers
  • Analysis and control of ultra-short pulses
    compressors, stretchers, spatial and spectral filters, pulse shaping [more...]
  • Measurement systems
    interferometers, spectrometers, surface measurement [more...]
  • Surface and holographic gratings
    beam splitters, polarizers, photonics crystals, moth-eye structures
  • Hybrid and diffractive lens optics
    diffractive and refractive elements, hybrid lenses, diffractive lenses
  • Spatial light modulators
    real time control of laser beams, displays - [more...]
  • Pattern generation
    light marks, logos, laser shows
  • Diffractive optical elements, holograms, phase plates
    shaping, splitting, diffusing light 
Model of a beam delivery system for the focusing of a single mode diode laser beam and the electric field in the focal region

Applications and VirtualLab Fusion Toolboxes of Laser Systems Design Package

The table shows which toolboxes of VirtualLab Fusion are recommended for each application. Please contact our sales team to discuss your specific requirements.

Further information can be found on the Starter Toolbox, Diffractive Optics Toolbox and Grating Toolbox pages.

An additional overview of the features and required VirtualLab toolboxes is shown here.

Light Sources

Interference fringes of Mach-Zender interferometer for a temporal partially coherent light source

VirtualLab is using a fully-vectorial light representation by electromagnetic fields. It provides the flexible simulation of different types of laser sources:

  • Monomode lasers
  • Multimode lasers
  • Partially coherent lasers
  • Excimer lasers
  • Pulsed lasers

The fast and easy implementation of any light source is realized by:

  • Import of measured laser modes
  • Source catalog
  • Customized programmable sources


Toroidal freeform interface with aspherical parameters

Based on unified optical modeling, the light propagation through complex optical systems can be simulated using different propagation models ranging from geometrical optics to physical optics. This smooth combination of different modeling techniques allows the analysis and design of optical setups including:

  • Lenses
  • Mirrors
  • Prisms
  • Freeform surfaces
  • Apertures / stops
  • Polarization optics
  • Fresnel lenses
  • Hybrid optics
  • Scatterers
  • Computer generated holograms (CGHs)
  • Micro lens arrays
  • Gratings
  • Grin lenses
  • Thin films
  • High-NA optics
  • Customized components


Y-component of the electric field in the focal

The evaluation of optical systems and definition of merit functions is most essential in practical optical modeling and design. Therefore VirtualLab’s advanced light representation by fully-vectorial electromagnetic fields gives access to all physical quantities, like:

  • Intensity
  • Wavefront, phase
  • Polarization Aberrations (e. g. Zernike & Seidel)
  • MTF & PSF
  • Beam radius, M² and divergence angle
  • Efficiency, uniformity error, stray light
  • Radiometric and photometric detectors
  • Customized definition of merit functions
Local optimization in the solution space of a laser system

Optimization and Tolerancing

VirtualLab provides local and global parametric optimization algorithm for laser systems. Diffraction, interference, polarization effects and aberrations can be taken into account during the optimization. The customized definition of merit functions, that define the target of optimization problems, guarantees the flexibility in the optimization. Furthermore VirtualLab comes with a parameter run enabling simulation series, Monte Carlo simulation and position, tilt and fabrication tolerancing.


Beside of the modeling and design capabilities, VirtualLab also provides a stable and convenient programming interface using C# or MATLAB code. This interface allows the customization of 

Script programming using C# or MATLAB language
  • Light sources
  • Interfaces
  • Components
  • Transmission and index modulated media
  • Detectors and merit functions

by entering an analytical formula or using a more complex algorithms. This enables for example the fast modeling and evaluation of components with user defined freeform diffractive, refractive or hybrid surface profiles.

VirtualLab also allows to add user defined modeling techniques providing the most flexible and powerful field tracing experience ever. User defined solutions are based on programmable sources, components and detectors which can be used together with all modeling solutions already delivered with VirtualLab.

Our Services

LightTrans offers solutions including software and training, support and consultingengineering and fabrication. Our customized services enable you to implement VirtualLab in your optical design projects very efficiently. Please contact our sales team to discuss your specific requirements.