Computing the resonance wavelength and Q of PhC resonators and plasmonic nanoparticles with the surface integral equation method

Integral equation method is an efficient approach for finding the resonance frequency and computing the Q-factor of open resonators due to the radiation boundary condition at infinity inherently built into the formulation, thus allowing the losses associated with radiation to be properly accounted. In this contribution, it is shown how to apply the surface integral equation to analysis of photonic crystal (PhC) defect cavities and plasmonic nanoparticles.