Effects of Inhomogeneous Gain and Loss on Nitride-Based Vertical-Cavity Surface Emitting Lasers
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概要
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Nitride-based vertical cavity surface emitting lasers (VCSEL) with hybrid mirror has been investigated. We further measured the as-grown samples (without top dielectric distributed Bragg reflector) by $\mu$-photoluminescence, scanning near-field optical microscopy, and cathodoluminescence (CL). By different excitation power density, the experimental results indicated that the VCSEL devices have different lasing modes and spot sizes, represented inhomogeneous gain and loss distribution in the whole structure. The non-uniform emission intensity distribution including several bright spots of about 1 to 2 μm was observed for both VCSEL devices and as-grown samples, which was obtained from CL measurement, due to the effect of indium clusters and non-uniform micro-cavity resonant in InGaN multi-quantum wells (MQWs). The results show the significant influence on commercial applications such as light emitting diodes, lasers devices and so on.
- 2009-04-25
著者
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CHEN Shih
Department of Biology, National Cheng Kung University
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Lu Tien
Department Of Photonic And Institute Of Electro-optical Engineering National Chiao Tung University
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Wang Shing
Department Of Mechanical And Mechatronic Eng. National Taiwan Ocean University
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Huang Hung
Department Of Photonics & Institute Of Electro-optical Engineering National Chiao Tung Universit
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Lin Li
Department Of Applied Mathematics Northwestern Polytechnical University
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Lee Cheng
Thin Film Technology Center (TFTC)/Department of Optics and Photonics, National Central University, 300 Jhongda Rd., Jhongli City, Taoyuan County 32001, Taiwan
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Kao Tsung
Department of Physics, National Taiwan University, Taipei 106, Taiwan
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Lin Li
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Lo Ming
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Kao Chih
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Chu Jung
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Kuo Hao
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Kuo Chien
Thin Film Technology Center and Department of Optics and Photonics, National Central University, Taoyuan 320, Taiwan
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Kao Tsung
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Lee Cheng
Thin Film Technology Center and Department of Optics and Photonics, National Central University, Taoyuan 320, Taiwan
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Chen Shih
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Huang Hung
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Wang Shing
Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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