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...

Design and Analysis of Laser Scanning Systems using Physical Optics

VirtualLab Fusion software enables the design and analysis of laser scanners containing scanning mirrors and f-theta lens optics

Laser scanning system consisting of two scanning mirrors and a f-theta objective. The entire system can be simulated and optimized with VirtualLab Fusion.

Laser scanning systems enable the dynamic positioning of laser beams using moveable optics. Typical applications of such systems are:

  • laser material processing
  • laser projection
  • 3D object scanning
  • barcode readers

The software VirtualLab Fusion provides ray tracing as well as physical optics based simulation techniques for laser scanning systems. Typical lens aberrations like field curvature and distortion can be computed. It is also possible to perform a highly precise investigation of the beam size and beam profile including diffraction effects. The combination of VirtualLab’s parameter coupling tool with the flexible positioning concepts allows the simulation of very complex setups of scanner optics. Design and tolerancing of laser scanning systems are enabled by the parametric optimization and parameter run tools of VirtualLab.

Features of VirtualLab Fusion Software

  • analysis of typical aberrations like field curvature and distortion
  • precise calculation of beam profile and size using physical optics
  • design of scanning systems using parametric optimization
  • tolerancing by experimental series
  • easy-to-use positioning concept and parameter coupling tool
  • realistic laser source modeling
  • refractive beam shaper design
Field curvature in the sagittal and tangential plane of an aspherical scanner optic (example LSC.0001).

Application Examples

  • LSC.0001: Performance Analysis of Laser Scanning System Using an Aspherical Lens
    In this example, a laser scanning system consisting of a dual axis galvanometer scanner and an aspherical lens as scanning optics is analyzed. The performance is evaluated by analyzing the field curvature and the distortion  by ray tracing at the detector. In addition the beam profile and size are determined most accurately by field tracing.
    PDF-file | Zip-file including VirtualLab sample files
  • LSC.0002: Analysis of a Laser Scanning System Using an F-Theta Objective
    In this example, a laser scanning system consisting of a dual axis galvanometer scanner and an F-Theta objective as scanning optic is analyzed. A significant performance improvement regarding field curvature and distortion is demonstrated compared to the usage of the aspherical lens in LSC.0001. In addition it is shown how the parameter coupling tool of VirtualLab can be used to compensate the nonlinear relation between mirror tilt angles and the resulting incident angle Theta. Furthermore the field of view of the scanning system is calculated.
    PDF-file | ZIP-file including VirtualLab sample files
  • LSC.0003: Influence of mirror aberrations on the beam quality in a micromirror laser scanning system
    The topic of this application example is the investigation of mirror aberrations in a laser scanning system based on a single micromirror setup (e.g. MEMS). The discussed aberrations are introduced as Zernike polynomials with different coefficients for different shapes, for example coma (731) and trefoil (933). The influence of these aberrations and their combinations on the beam's profile are shown on the target screen. Furthermore, this strategy enables the simulation of static and dynamic mirror aberrations during the scanning procedure.
    PDF-file | ZIP-file including VirtualLab sample files
Spot diagram of a laser scanning system calculated by VirtualLab's raytracing engine.
Astigmatic beam profile in the focal region of an aspheric scanner optic.

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.

Tutorial Webinar

In the webinar we demonstrate the simulation of different laser scanning setups and the analysis of speckle pattern for scanned images:

  • Simulation of laser scanning systems based on setups exhibiting one and two scanning mirrors with different subsequent lens configurations.
  • Analysis of beam deformations caused by static and dynamic aberrations of the scanning mirror.
  • Investigation of speckle pattern in laser scanned images observed by the human eye. 

Here you can find the presentation of the webinar.
You may watch the video on YouTube