Modal properties and thermal behaviors of high quality factor quasi-photonic crystal microcavity

Optics Express
Tsan-Wen LuYi-Yu Tsai

Abstract

We investigate the variations of modal properties of 12-fold quasi-photonic crystal microcavities sustaining whispering-gallery (WG) mode with different central post sizes both in simulations and experiments. We realize our design by a series of dry- and wet-etching processes. WG mode lasing actions are obtained with high quality (Q) factor of 8,400 from microcavity with effective post size 420 nm in diameter. Loss and thermal behaviors are analyzed by measured Q factors, thresholds, and rolling-off effects from light-in light-out curves of microcavities with increased post size. By finite-element simulations, we also address the heat sink improvement due to presence of larger central post that is observed in measurements.

References

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Sep 9, 2004·Science·Hong-Gyu ParkYong-Hee Lee
Nov 17, 2007·Optics Letters·Oskar Painter, Kartik Srinivasan

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