| High-Power Operation of Uncoated Strain-Compensated Quantum Cascade Lasers at 4.8μm |
| |
| 引用本文： | 李路,邵烨,刘俊岐,刘峰奇,王占国.High-Power Operation of Uncoated Strain-Compensated Quantum Cascade Lasers at 4.8μm[J].中国物理快报,2007,24(12):3428-3430. |
| |
| 作者姓名： | 李路 邵烨 刘俊岐 刘峰奇 王占国 |
| |
| 作者单位： | Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083 |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China for Distinguished Young Scholars under Grant No 60525406, and the National Basic Research Programme of China under Grant No 2006CB604903. The authors would like to acknowledge P. Liang, Y. Hu, and H. Sun for help with device fabrication. |
| |
| 摘 要： | High-power operation of uncoated 22μm-wide quantum cascade lasers （QCLs） emitting at λ～ 4.8μm is reported. The emitting region of the QCL structure consists of a 30-period strain-compensated Ino.68 Gao.32 As/In0.37 Alo.63 As superlattice. For a 4-mm-long laser in pulsed mode, a peak output power is achieved in excess of 2240mW per facet at 81K with a threshold current density of 0.64 kA/cm^2. The effects of varying the cavity lengths from 1 to 4 mm on the performances of the QCLs are analysed in detail and the low waveguide loss of only about 1.4 cm^-1 is extracted.
|
| 关 键 词： | 激光 量子论 疲劳补偿 超晶格 |
| 收稿时间： | 2007-06-07 |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
| 点击此处可从《中国物理快报》下载免费的PDF全文 |
|
