NEWS

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...

Free optical design seminar at Photonics West 2017

(December 19, 2016)

LightTrans is going to exhibit at Photonics West 2017 taking place in San Francisco, CA, starting on January 31, 2017. Please visit us at our booth 4629-45 in the German Pavilion during the trade show (January 31 - February 2). During the week of the trade show we offer a free optical design semina...

Diffractive Optics Design

Shaping, Splitting and Diffusing Light by Diffractive Optical Elements

VirtualLab Fusion enables the design and simulation of diffractive optical elements, micro optical elements, gratings, freeform elements and holograms for shaping, splitting, diffusing and homogenization of both, laser and LED light. Fast physical optics simulation and optimization algorithms enable the design of these elements and take into account diffraction, interference, polarization and degree of coherence.

Applications

  • Homogenization and shaping of LED light
    micro lens arrays, diffractive diffusers, cells arrays of gratings, micro prisms and micro mirrors
  • Diffractive optical elements, holograms, phase plates
    shaping, splitting, diffusing light [more...]
  • Pattern generation
    light marks and logos for laser and LED light
  • Surface and holographic gratings
    beam splitters, polarizers, photonics crystals, moth-eye structures
  • Deterministic scattering
    surface scattering, volume scattering, real surfaces and index modulations
  • Spatial light modulators
    real time control of laser beams, displays
Holographic screen for headup display applications designed with VirtualLab Fusion

Applications and VirtualLab Fusion Toolboxes of Diffractive Optics 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, Grating Toolbox, Diffractive Optics Toolbox, and Lighting Toolbox pages.

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

Light Shaping by Diffractive Optical Elements

The optical software VirtualLab enables the design and simulation of diffractive optical elements for laser light shaping. The Diffractive Optics toolbox uses the powerful Iterative Fourier Transform Algorithm (IFTA) and parametric optimization to optimize:

  • Diffractive optical elements
  • Diffractive beam splitters
  • Diffractive diffusers
  • Diffractive and refractive beam shapers
  • Computer generated holograms
  • Phase plates
  • Kinoforms.
Diffractive line diffuser and ring diffuser illuminated by red and green laser light

Diffractive optical elements can be modeled including focusing lenses, collimation lenses, beam expanders and Fourier lenses. Optical simulations include

  • Diffraction
  • Interference
  • Polarization
  • Temporal and spatial degree of coherence
  • Intensity
  • Phase
  • Aberrations.
Light pattern generated by diffractive beam splitter

Diffractive optical elements are used in various laser systems for the manipulation of laser beams. Typical applications are:

  • Material processing
  • Display of information
  • Measurement systems
  • Free space telecommunication
  • Automotive
  • Military
  • Spectroscopy

Benefits

Binary height profile of one period of a diffractive beam splitting element

Diffractive optical elements will have the following benefits in your laser systems:

  • Control of diffraction and interference effects
  • Splitting of laser beams with customized power per beam
  • Design of deterministic scattering plates
  • Shaping of laser beam intensities
  • Very compact laser systems
  • Generation of arbitrary 2D intensity distributions
  • Fast optimization of hundred thousands of free parameters by IFTA

Diffractive Beam Splitters

Light pattern generated by diffractive beam splitting element

Diffractive beam splitters split a single laser beam in a customized number of beams with customized power and angle. Beam splitters are typically used together with collimation lenses, focusing lenses, beam expanders and Fourier lenses. The beam size in the target plane is typically controlled by the lens system while the beam position and power is controlled by the diffractive beam splitter. Diffractive beam splitters enable the generation of the following light distributions:

  • Regular spots arrays
  • Spot lines
  • Arbitrary 2D spot patterns

Diffractive Diffusers

Intensity distribution generated by diffractive diffuser

Diffractive diffuser are deterministic scattering elements generating a lot of overlapping diffraction orders. Because of this overlap between orders speckles may appear depending on the degree of coherence of the laser beam. Diffusers are typically used together with collimation lenses, focusing lenses, beam expanders and Fourier lenses. The optical resolution is typically controlled by the lens system while the diffractive diffuser controls the intensity distribution. Diffractive diffusers enable the generation of the following light distributions:

  • Rectangular and circular Top Hats
  • Lines
  • Crosshair patterns
  • Grid patterns
  • Arbitrary 2D intensity patterns

Diffractive Beam Shapers

Donut mode with Top Hat profile generated by beam shaping element

Diffractive and refractive beam shaping elements are typically used for the shaping of the intensity of coherent laser beams. These elements enable the generation of very homogeneous speckle free light patterns. Beam shapers are often used together with collimation lenses, focusing lenses, beam expanders and Fourier lenses. The optical resolution is typically controlled by the lens system while the diffractive beam shaper controls the intensity distribution. Beam shapers enable the generation of the following light distributions:

  • Rectangular and circular Top Hats
  • Lines
  • Donut modes
  • Gauss-Hermite and Gauss-Laguerre modes
  • Arbitrary 2D intensity patterns