Learning Forum

[Chieh Tsao]

Dear all,

Recently, I have been learning Lumerical. Since I am interested in nonlinear optics, I have followed the instructions from the following link to simulate the SHG spectrum.

https://optics.ansys.com/hc/en-us/articles/360042190413-Harmonic-generation-with-a-chi2-material

I am wondering if this method could see the SPDC signal.

Thank you for answering!

 

[Amrita Pati]

Hi Chieh,

Yes, you can use the chi2 material model to simulate SPDC. But nonlinear simulations are challenging and there are always additional considerations. I will suggest you to look at the following article for more information on the Nonlinear simulation methodology: Nonlinear and gain methodology

Regards,
Amrita

[Chieh Tsao]

Hi Amrita,

Thanks for the reply!

I followed the link you provided and Harmonic generation with a chi2 material – Ansys Optics. I could see the SHG signal using a point time monitor. However, I couldn't see the SPDC signal even when I used the log scale. I might miss something. Could you give me some instructions? I tried to find papers, but most of them used COMSOL.

Best,

Chieh