Axicon Lens

A Thorlabs Axicon Lens AX2520-UV model is used in this file to convert a plane wave input beam into a ring profile. 

Notes: 

  • The raytrace is performed coherently using FRED’s Gaussian Beam Decomposition technique. 
  • To minimize ray errors at the center point of the conic surface, a large number of rays need to be traced. 
  • A grid of 201 x 201 is deemed sufficient. 
  • The ring profile can be seen by plotting either the Irradiance, Energy Density, or Scalar Field profile at the Image Plane.

Associated FRED file:FRED_AxiconLensExample.frd

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