National Changhua University of Education Institutional Repository : Item 987654321/12487
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题名: Optical Gain and Threshold Properties of Strained InGaAlAs/AlGaAs Quantum Wells for 850-nm Vertical-cavity Surface-emitting Lasers
作者: Chen, Jun-Rong;Kuo, Yen-Kuang
贡献者: 物理學系
关键词: Semiconductor lasers;Optical properties;III–V semiconductors;Numerical simulation
日期: 2006-08
上传时间: 2012-07-19T01:47:37Z
出版者: Elsevier
摘要: The valence subband structures, optical gain spectra, transparency carrier densities, and transparency radiative current densities of different compressively strained InGaAlAs quantum wells with Al0.3Ga0.7As barriers are systematically investigated using a 6 × 6 k · p Hamiltonian including the heavy hole, light hole, and spin–orbit splitting bands. The results of numerical calculations show that the maximum optical gain, transparency carrier densities, transparency radiative current densities, and differential gain of InGaAlAs quantum wells can be enhanced by introducing more compressive strain in quantum wells. However, further improvement of the optical properties of InGaAlAs quantum wells becomes minimal when the compressive strain is higher than approximately 1.5%. The simulation results suggest that the compressively strained InGaAlAs quantum wells are of advantages for application in high-speed 850-nm vertical-cavity surface-emitting lasers.
關聯: Optics Communications, 264(1): 213-218
显示于类别:[物理學系] 期刊論文

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