標題: GaN-based two-dimensional surface-emitting photonic crystal lasers with AlN/GaN distributed Bragg reflector
作者: Lu, Tien-Chang
Chen, Shih-Wei
Lin, Li-Fan
Kao, Tsung-Ting
Kao, Chih-Chiang
Yu, Peichen
Kuo, Hao-Chung
Wang, Shing-Chung
Fan, Shanhui
光電工程學系
Department of Photonics
公開日期: 7-Jan-2008
摘要: GaN-based two-dimensional (2D) surface-emitting photonic crystal (PC) lasers with AlN/GaN distributed Bragg reflectors are fabricated and demonstrated. The lasing threshold energy density is about 3.5 mJ/cm(2) per pulse under optical pumping at room temperature. Only one dominant emission wavelength of 424.3 nm with a narrow linewidth of 1.1 A above the threshold is observed. The laser emission covers whole circularly 2D PC patterns (50 mu m in diameter) with a small divergence angle. The lasing wavelength emitted from 2D PC lasers with different lattice constants occurs at the calculated band-edges provided by the PC patterns. The characteristics of large area, small divergence angle, and single mode emission from the GaN-based 2D surface-emitting PC lasers should be promising in high power blue-violet emitter applications.
URI: http://dx.doi.org/10.1063/1.2831716
http://hdl.handle.net/11536/9774
ISSN: 0003-6951
DOI: 10.1063/1.2831716
期刊: APPLIED PHYSICS LETTERS
Volume: 92
Issue: 1
結束頁: 
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