標題: Room temperature ultraviolet GaN metal-coated nanorod laser
作者: Hsu, Yu-Cheng
Sou, Kuok-Pan
Chang, Shih-Pang
Hsu, Kung-Shu
Shih, M. H.
Kuo, Hao-Chung
Cheng, Yuh-Jen
Chang, Chun-Yen
電子工程學系及電子研究所
光電工程學系
Department of Electronics Engineering and Institute of Electronics
Department of Photonics
公開日期: 4-Nov-2013
摘要: This study demonstrates a room-temperature ultraviolet GaN/Al nanorod (NR) metal laser with an optimized sidewall. A wet-chemical etching process with potassium hydroxide was used to control the GaN NR sidewall angle and polish the NR surface. The lasing action was observed near a wavelength of 365 nm with a low threshold power density of 5.2 mJ/cm(2). The high-quality factor (Q) surface plasmon lasing modes were characterized with experiments and three-dimensional finite-element method simulations. We also studied the optical modes in GaN metal-coated NR with and without an Al layer and verified the metal layer is necessary for high-Q resonant modes. (c) 2013 AIP Publishing LLC.
URI: http://dx.doi.org/10.1063/1.4828997
http://hdl.handle.net/11536/23271
ISSN: 0003-6951
DOI: 10.1063/1.4828997
期刊: APPLIED PHYSICS LETTERS
Volume: 103
Issue: 19
結束頁: 
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