High Intensity Single-Mode Peak Observed in the Lasing Spectrum of InAs/GaAs Quantum Dot Laser
High Intensity Single-Mode Peak Observed in the Lasing Spectrum of InAs/GaAs Quantum Dot Laser
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DOI：
10.1088/0256-307x/30/2/024209
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发表时间：
2013-02
影响因子：
3.5
通讯作者：
Yue Li;Gong Qian;Y. Jinyi;Cao Chunfang;Liu Qing-Bo;Wang Yang;Cheng Ruo-Hai;Wang Hai-long
中科院分区：
文献类型：
--
作者：
Yue Li;Gong Qian;Y. Jinyi;Cao Chunfang;Liu Qing-Bo;Wang Yang;Cheng Ruo-Hai;Wang Hai-long
报道了InAs/GaAs量子点激光器的反常激光光谱，其中存在一个单模峰，其光强比其他模的光强大几倍。在注入电流为413 mA、温度为29℃时，单模峰值的最大边模抑制比为10.11分贝。研究发现，在一定的工作温度和电流范围内，都会出现这种反常的激光光谱。单模峰值光强的急剧增加与位于增强模较高能侧的光学激射模的消失密切相关。
We report on abnormal lasing spectra of InAs/GaAs quantum dot lasers, where a single-mode peak exists with optical intensity several times larger than that of other modes. The maximum side mode suppression ratio of the single-mode peak is measured to be 10.11 dB at 29°C with injection current of 413 mA. It is found that the emergence of this abnormal lasing spectrum happens in a certain range of operation temperature and current. The sharp increase in optical intensity of the single-mode peak is closely related to the disappearance of optical lasing modes located at the higher energy side of the enhanced mode.