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...

Analysis and Tolerancing of Optical Measurement Systems

VirtualLab Fusion software enables the simulation of optical measurement systems like interferometers, spectrometers and surface measurement devices

Simulation result of a white light Michelson interferometer setup for a surface topology measurement of a relief of a 1 Euro coin.

Several optical measurement principles are based on the wave nature of light. Typical devices are:

  • interferometers
  • spectrometers & monochromators
  • surface metrology systems

The software VirtualLab Fusion enables the simulation and the tolerancing of such measurement systems. Most setups are characterized by effects like diffraction, interference and temporal as well as spatial coherence. The field tracing engines of VirtualLab take into account these physical optics effects yielding a fast and accurate modeling of measurement systems.  

Features of VirtualLab Fusion Software

  • physical optics based simulation of metrology systems
  • partial coherence and diffraction effects included
  • tolerancing in particular for tilts and shifts
  • realistic color perception
  • easy-to-use positioning concept
  • calculation of interference fringe patterns
  • simulation of a topography scanning setups
  • high resolution analysis of whole spectra
Model of a Michelson interferometer - the entire optical system including partially coherent white light can be simulated by VirtualLab Fusion (example MSY.0002).

Application Examples

  • MSY.0001: Simulation of Mach-Zehnder-Interferometer using Coherent Light
    This example treats the simulation of a Mach-Zehnder interferometer using VirtualLab. Thus, beam splitting and combining in VirtualLab are shown in detail. The characteristic interference fringes are calculated by using geometric field tracing. In addition the influence of alignment errors sich as shifts and tilts of elements are presented exemplarily.
    PDF-file | Zip-file including VirtualLab sample files
  • MSY.0002: Simulation of a White Light Michelson Interferometer
    In this application example the simulation of a Michelson interferometer using partially temporal coherent white light is discussed. For this purpose a Xenon lamp exhibiting a black body spectrum at 6200K temperature is utilized as light source. The impact of the partially coherent light on the interference pattern is shown in detail. Furthermore, a specimen (1 Euro coin) is investigated, by topology scanning interferometry.
    PDF-file | ZIP-file including VirtualLab sample files
  • MSY.0003 Simulation of a Czerny-Turner Monochromator and Spectrometer
    In this example, the realization of a Czerny-Turner monochromator setup is discussed. For this purpose, parabolic mirrors and a blazed grating are utilzed. The efficiencies of the occurring diffraction orders are calculated rigorously, by applying the Fourier Modal Method. The parameter coupling feature is used, to enable spectrometric investigations. Furthermore, the spectral resolution of the setup is determined. After  characterizing the assembly, it is used to resolve the characteristic wavelength doublet of sodium.
    PDF-file | ZIP-file including VirtualLab sample files
The interference pattern generated by a Mach-Zehnder interferometer setup can be investigated by using VirtualLab. In particular the influence of different alignment errors such as element tilts and shifts on fringe patterns can be simulated (example MSY.0001).

Free Trial Software

We invite you to download of a trial version of VirtualLab Fusion. You may also contact our sales team to discuss your requirements in more detail.