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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 17 — Aug. 18, 2008
  • pp: 12591–12598

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, and Yi-Yu Tsai  »View Author Affiliations

Optics Express, Vol. 16, Issue 17, pp. 12591-12598 (2008)

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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.

© 2008 Optical Society of America

OCIS Codes
(140.3945) Lasers and laser optics : Microcavities
(050.5298) Diffraction and gratings : Photonic crystals
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Photonic Crystals

Original Manuscript: June 10, 2008
Revised Manuscript: July 29, 2008
Manuscript Accepted: July 31, 2008
Published: August 5, 2008

Tsan-Wen Lu, Po-Tsung Lee, Chung-Chuan Tseng, and Yi-Yu Tsai, "Modal properties and thermal behaviors of high quality factor quasi-photonic crystal microcavity," Opt. Express 16, 12591-12598 (2008)

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