Modal properties and thermal behaviors of high quality factor quasi-photonic crystal microcavity with different central post sizes

Tsan Wen Lu*, Po Tsung Lee, Chung Chuan Tseng, Yi Yu Tsai

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We investigate the variations of modal properties of 12-fold quasiphotonic 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.

Original languageEnglish
Pages (from-to)12591-12598
Number of pages8
JournalOptics Express
Volume16
Issue number17
DOIs
StatePublished - 18 Aug 2008

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