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.

Principle of Eigenfrequency Solver

Please login with a confirmed email address before reporting spam

Hello,

I use the eigenfrequency solver to calculate resonant modes in photonic microcavities.
I this regard, I'm wondering how the the eigenfrequencies are actually calculated. I looked into the comsol documentation, but found only explanations on how to derive quantities like the Q factor from the complex eigenvalue.
From harminv for meep I know that a broadband pulse is started in the structure and the less damped frequencies are identified as resonant modes.
Is the approach in Comsol similar? I only found the comment, that for solving the eigenfrequency problem a time harmonic approach has to be used, which would point into the afore mentioned direction.

Maybe someone of you can give me a short explanation on this, or can tell me where to find this information.

With best regards,

Clemens

0 Replies Last Post Nov 25, 2011, 5:31 a.m. EST
COMSOL Moderator

Hello Clemens Schriever

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.