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LightTrans VirtualLab 5.8 - New Features and Applications
Author: InfoCrops   Time: 2013-8-8 09:32:50

Release Date: August 8, 2013
Update Service: 4thquarter 2012 is required.
Installation: VirtualLabTM5.0 (basic installation) or 5.0.x, 5.1.x, 5.2.x, 5.3.x, 5.4.x, 5.5.x(update) required.
LightTrans VirtualLab™ 5.8 enables the approximated and rigorous simulation of the light refraction, diffraction and reflection at tilted optical elements. This includes in particular:
- Modeling of tilts and offsets of optical components
- Physical optics propagation between tilted planes
- Diffraction at tilted apertures, transmission and reflection functions
- Modeling and simulation of tilted micro structured mirrors
- Simulation of field distributions on tilted screens
- Modeling of prisms, beam splitting plates and cubes as well as laser windows
- Tolerance simulation with offsets, tilts, source and surface tolerances
- New fabrication data export by Surface Tesselation Language (STL)
User Defined Optical Modeling
- Thus the use of MATLAB code is enabled in all programmable objects. This new technique allows a smooth combination of user defined MATLAB solutions with inherent VirtualLab solutions to tackle modeling tasks. By that optical modeling based on field tracing becomes extremely flexible and time efficient.
Transversal mode analysis and output power calculation for stable, unstable and ring resonators
- As one of the recent developments the beam propagation method (BPM) can be used for the simulation of non-linear gain saturation effects inside active media.
- Modeling the inhomogeneous pump light distribution and analysis of its effect in the resonator is both provided and combined in VirtualLab.
- Solutions of the laser rate equations allow the calculation of the resonator output power.
- All techniques can be applied to analyze stable, unstable, and ring resonators including tolerance analysis.
Modeling of optical systems for extending, shortening, focusing and shaping fs pulses
- VirtualLab allows the fast generation of the spatiotemporal distribution of ultrashort pulses by different pulse data generators or by import of pulse data. The pulse tracing through homogeneous media takes the material as well as angular dispersion fully into account. The propagation can be displayed in various ways including:
Diagrams which show x-z-shape of pulse at different times Movie to demonstrate pulse propagation along z-axis
Diagrams which show x-t-shape of pulse at fixed position at the z-axis
Movie to demonstrate the propagation of the pulse through a plane at a fixed z-position
- The pulse can be propagated through apertures, lenses, prisms, and gratings to mention some of the components. By the programmable component users can add nonlinear effects to the simulation as well. The pulse modeling capacity of VirtualLab includes for example the investigation of:
Angular and material dispersion effects
Spatiotemporal evolution of pulses
Pulse propagation through gratings and prisms
Focusing of pulses by lens systems
Spatiotemporal characteristics in focal regions
Pulse lengthening and shortening
Spatiotemporal pulse shaping
Fourier Modal and Finite Element Methods for the accurate analysis of nano-structures
- As a first result, users of VirtualLab and JCMsuite have access to a comfortable data interface enabling an analysis of nano-structures with FMM provided by VirtualLab and with FEM provided by JCMsuite. Both methods, FMM and FEM, have pros and cons depending on the application but the combination of the tools provides several options for the modeling and enables the simulation of a wide range of applications including:
Analysis of gratings with Fourier Modal and Finite Element Methods
Analysis of periodic and non-periodic gratings and nano-structures
Analysis for incident plane waves and general incident waves
Field tracing with locally rigorous solvers for nano-structured components

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