How can I get only scattered field without background field in Electromagnetic Waves, Transient

Please login with a confirmed email address before reporting spam

Hello, everyone! I tried to reproduce a FDTD article in COMSOL. I would like to introduce the model briefly: I couple temw with general form PDE to describe the dynamic in material. I set a Gaussian incident pulse in SBC and make it illuminate on a metasurface.

I set a probe to get the output signal. There are two signals caused by the nonlinear PDE. I want to observe: (1) THz signal(2)400THz. I can get 400THz signal now, but I can't get THz signal. It may be covered by the background noise from Gauss pulse, and I want to eliminate it now.

However, TS/SF technique used in the FDTD article which can help them get scattered field directly without background field doesn't exist in COMSOL. And background/scattered field technique only exists in Electromagnetic Waves, Frequency domain. So what I can do in Electromagnetic Waves, Transient now?


Reply

Please read the discussion forum rules before posting.

Please log in to post a reply.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.