How to calculate of Q factor in photonic crystal cavity?

25 September 2016 1 8K Report

I have a three-dimensional photonic crystal cavity using comsol. My aim is to calculate the quality factor in this structure? please tell me about boundary condition and study?

thanks a lot

Yosuke Nakata

Eigensolver of COMSOL can be utilized.

https://www.comsol.jp/model/computing-q-factors-and-resonant-frequencies-of-cavity-resonators-9618

As boundaries, you can use PML to terminate infinite fields:

https://www.comsol.com/blogs/using-perfectly-matched-layers-and-scattering-boundary-conditions-for-wave-electromagnetics-problems/

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