標題: High quality factor microcavity lasers realized by circular photonic crystal with isotropic photonic band gap effect
作者: Lee, Po-Tsung
Lu, Tsan-Wen
Fan, Jyun-Hao
Tsai, Feng-Mao
光電工程學系
Department of Photonics
公開日期: 9-Apr-2007
摘要: The photonic band gap (PBG) effect and its isotropy of sunflower-type circular photonic crystal (CPC) are obtained and investigated from the transmission spectra performed by finite-difference time-domain (FDTD) method. The PBG directional width variation is found to be only 6.7%. A well-confined whispering gallery mode (WGM) with azimuthal number of 6 is obtained by FDTD simulation from the CPC microcavity formed by seven missing air holes (C2). Ascribed to the deep and isotropic PBG confinement, the WGM lasing with very-low threshold (similar to 0.13 mW) and very-high-quality (Q) factor (> 10 000) is obtained from well-fabricated CPC C2 microcavity lasers. (c) 2007 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.2724899
http://hdl.handle.net/11536/10921
ISSN: 0003-6951
DOI: 10.1063/1.2724899
期刊: APPLIED PHYSICS LETTERS
Volume: 90
Issue: 15
結束頁: 
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