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: | 9-四月-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: | |
顯示於類別: | 期刊論文 |