Design considerations of III-nitride-based two-dimensional photonic crystal cavities with crystallographically induced disorder

We present a study on the improvement of quality factors (Q-factors) of III-nitride-based two-dimensional photonic crystal (2D-PhC) nanocavities. Although III-nitride-based 2D-PhC cavities have been studied for long time, they typically show relatively low experimental Q-factors due to disorders inevitably introduced during the fabrication processes. In order to realize high-Q-factors, it is necessary to introduce cavities that are tolerant to disorder. We numerically reproduce the experimental found disorder in simulations, and discuss the influence of disorder on Q-factors of several types of cavities. We demonstrate the suitability of these cavities for the realization of high-Q-factors, and show which structures have the largest tolerance for disorders.

Automated summary

This study focuses on improving the quality factors of III-nitride-based two-dimensional photonic crystal nanocavities. By replicating experimental disorders in simulations, the study examines the influence of disorder on Q-factors and identifies which cavity structures are most tolerant to disorders, showing potential for achieving high-Q-factors.