Reply To: How can I use the Bessel Gaussian beam source in fdtd?

[anna.wirth-singh]

Hi, 

Thanks for the question. The available built-in sources are Gaussian, plane wave, and Cauchy/Lorentzian, so you will probably have to build a custom source to do this. One approach would be to define custom spatial field profile as a Matlab dataset and import it. Or, if you have a model of your beam from Zemax, you can import it a Zemax ZBF file. Please see Import source - Simulation object – Ansys Optics for more information on importing custom sources. 

Alternatively, if you know how to decompose your Bessel Gaussian source into plane waves, another approach would be to use a summation of plane wave sources to build up the custom source. 

Best,

Anna