Donut beam shape to simulate VCSEL

- April 11, 2023 at 2:49 pm
  
  Hassan Malek
  Subscriber
  
  VCSEL has a donut beam shape. I want to simulate injecting light into a waveguide using a VCSEL. So how can I have a donut beam shape in Lumerical FTDT?
- April 12, 2023 at 4:52 pm
  
  Guilin Sun
  Ansys Employee
  
  If you know the math expression for such a beam, you can write a script to import it. Please refer to this example: https://optics.ansys.com/hc/en-us/articles/360034383054

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