LightTrans

On Site VirtualLab Fusion Training

04 – 08 July 2022
09:00 – 16:30 (CEST)
SCALA Panoramabankett, Jena


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VirtualLab Fusion

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Training

OptoNet Summer Course: Fast Physical Optics Modeling and Design

04 – 08 July 2022
09:00 – 16:30 (CEST)
SCALA Panoramabankett, Leutragraben 1, 07743 Jena, Germany
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Online Training

Getting Started with VirtualLab Fusion – 09/2022

06 – 07 September 2022 | 08:30 – 12:00 (CEST)
08 – 09 September 2022 | 17:00 – 20:30 (CEST)
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Online Training

Getting Started with VirtualLab Fusion – 11/2022

15 – 16 November 2022 | 08:30 – 12:00 (CET)
17 – 18 November 2022 | 17:00 – 20:30 (CET)
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„VirtualLab Fusion offers excellent opportunities in research projects and is perfect for use in teaching, especially since there are many documented application examples available.“

Prof. Dr. Stefan Kontermann, Hochschule RheinMain

Nowadays ray tracing is not sufficient anymore. For a detailed analysis physical optics is required. VirtualLab Fusion is optimized for wave-optical simulations. The results we achieved are excellent. We can highly recommend VirtualLab Fusion. Not only the software is great, but also the support of the whole LightTrans team.

Dr. Benjamin Heck, Raylase GmbH

Excellent program, amazing capabilities, and very user-friendly interface.

Galina Machaviariani, Apple

VirtualLab Fusion is a very promising software that is helping in solving some peculiar diffraction issues that have been causing headaches to the community.

Federico Landini, INAF – Osservatorio Astrofisico di Arcetri

This is one of the most elaborate pieces of software I’ve ever had the pleasure of working with. My workflow now is not only faster and more pleasant, but also very well documented with little to no effort on that point.

Dr. Fabian Patrovsky, CDA GmbH

What's new?

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Design and Optimization of non-paraxial Diffractive Beam Splitter

[May 23, 2022]
We employ the IFTA alongside a structure design based on the TEA to generate a series of initial designs for a beam splitter, which are then rigorously analyzed and further optimized rigorously...
[May 23, 2022]

Due to their ability to split a single laser beam into multiple beams in combination with well-defined power ratios, diffractive beam splitters are widely used for applications such as laser material processing and optical metrology. But because of the small feature sizes required for non-paraxial or even high-NA splitting or diffraction angles, the design and optimization of this type of device can be challenging. VirtualLab Fusion provides optical engineers with several tools to assist them in this task.

To illustrate the general workflow, we showcase two examples: In the first example, we employ the Iterative Fourier Transform Algorithm (IFTA) alongside a structure design based on the Thin Element Approximation (TEA) to generate a series of initial designs for a beam splitter, which are then rigorously analyzed and further optimized rigorously with the Fourier Modal Method/Rigorous Coupled Wave Analysis (FMM/RCWA). In order to define a suitable and efficient merit function for that last optimization step, the Programmable Grating Analyzer is applied. The second example covers this part of the process in more detail.

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Nonsequential Simulation for Interferometry

[May 06, 2022]
Mirau interferometry is a well-known technique that allows the measurement of surfaces. To fully investigate and design such a system, a non-sequential simulation approach is helpful.
[May 06, 2022]

Mirau interferometry is a well-known technique that allows the measurement of surfaces with an accuracy of up to one hundredth of the wavelength used. To fully investigate and design such a system, a non-sequential simulation approach is helpful because it automatically incorporates the interference effects that arise from the internal reflections.

Therefore, this week we not only present such a device, but also elaborate on the measurement principle by investigating the interference effects of differently shaped etalons.

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Multipass Absorption Cells for Gas Spectroscopy

[April 22, 2022]
We demonstrate the simulation of an Herriott cell. Therefor we use the Parameter Coupling to link several system parameters together, in order to ensure the correct configuration of the setup.
[April 22, 2022]

In spectroscopy of gases, in order to obtain a sensitive enough measurement of the absorption, it is often required to have long optical path lengths. Multiple-pass cells, where the gas-filled volume is encased between mirrors, are a way of fulfilling this requirement while at the same time controlling beam divergence on the way and preempting the need for extremely large devices. The Herriott cell is one example of this kind of system, characterized by the use of two spherical mirrors with a single off-axis hole drilled into one of them to allow for the entry and exit of the beam. The curvature of the mirrors redirects the beam and controls its divergence.

In today’s newsletter we want to demonstrate the simulation of one such Herriott cell. We have used the Parameter Coupling to link several system parameters together, in order to ensure the correct configuration of the setup while allowing the user to investigate the effect of varying, for instance, the distance between mirrors.

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