Polarized light emission from photonic crystal light-emitting diodes

被引：39
|
作者：
Lai, Chun-Feng [1 ,2 ]
Chi, Jim-Yong [3 ,4 ]
Yen, Hsi-Hsuan [1 ,2 ]
Kuo, Hao-Chung [1 ,2 ]
Chao, Chia-Hsin [4 ]
Hsueh, Han-Tsung [4 ]
Wang, Jih-Fu Trevor [4 ]
Huang, Chen-Yang [4 ]
Yeh, Wen-Yung [4 ]
机构：
[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 300, Taiwan
[2] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 300, Taiwan
[3] Natl Dong Hua Univ, Inst Optoelect Engn, Hualien 97401, Taiwan
[4] Ind Technol Res Inst, Elect & Optoelect Res Labs, Hsinchu 310, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 24期
关键词：
D O I：
10.1063/1.2938885
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have experimentally studied polarization characteristics of the two-dimensional photonic crystal (PhC) light-emitting diodes (LEDs) using an annular structure with square lattice and observed a strong polarization dependence of the lattice constant and orientation of the PhC. The extracted light from the GaN PhC LEDs has P/S ratios of 5.5 (similar to 85% polarization light) for light propagating in the Gamma X direction and 2.1 (similar to 68% polarization light) for the Gamma M direction, respectively. Based on the couple mode theory, the dependence of polarization behaviors on different lattice constant and orientation was found to be in good agreement with theoretical discussion.
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页数：3
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