| Low-Threshold High-Temperature Operation of ～7.4μm Quantum Cascade Lasers |
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| 引用本文： | 李路,刘峰奇,邵烨,刘俊岐,王占国.Low-Threshold High-Temperature Operation of ～7.4μm Quantum Cascade Lasers[J].中国物理快报,2007,24(6):1577-1579. |
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| 作者姓名： | 李路 刘峰奇 邵烨 刘俊岐 王占国 |
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| 作者单位： | Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083 |
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| 基金项目： | Supported by the National Natural Science Foundation of China for Distinguished Young Scholars under Grant No 60525406, the National Basic Kesearch Programme of China under Cant No 2006CB604903. |
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| 摘 要： | We report low-threshold high-temperature operation of 7.4#m strain-compensated InGaAs/lnAIAs quantum cascade lasers （QCLs）. For an uncoated 22-μm-wide and 2-mm-long laser, the low-threshold current densities, i.e. 0.33kA/cm^2 at 81 K in pulsed mode and 0.64kA/cm^2 at 84K in cw mode, are realized. High-temperature operation of uncoated devices, with a high value of 223K, is achieved in cw mode.
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| 关 键 词： | 量子 高温 散色 叶栅 |
| 收稿时间： | 2007-2-15 |
| 修稿时间： | 2007-02-15 |
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