Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Modifying the wave equation in the wave optics module

Please login with a confirmed email address before reporting spam

Hello everyone,

In the wave optics module, frequency domain, modal analysis, I need to modify the wave equation. The default wave equation is the following:

∇×∇×E - ε k0^2 E = 0

λ = -jβ - δz

E(x,y,z) = E0(x,y) e^-iKz z

I want to modify the first line of the equation to:

∇^2E - ε k0^2 E = 0

How is this possible? I tried to create a custum physics envirnment by using the classical PDEs from Mathematics tab. However, I couldn't figure out how to implmemnt the second and third lines of the equations because it only lets me make one equation.

The attached is a very basic model in which I've used Helmholtz equation from the PDEs but couldn't make any progress because of the aformentioned problem.

Thank you,


0 Replies Last Post Oct 8, 2018, 4:03 PM EDT
COMSOL Moderator

Hello Arash Mafi

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

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.