Methods and apparatus for single-mode selection in quantum cascade lasers
文献类型：专利
| 作者 | CAPASSO, FEDERICO; LEE, BENJAMIN, G.; PFLUGL, CHRISTIAN; DIEHL, LAURENT; BELKIN, MIKHAIL, A. |
| 发表日期 | 2010-05-27 |
| 专利号 | WO2010059180A2 |
| 著作权人 | PRESIDENT & FELLOWS OF HARVARD COLLEGE |
| 国家 | 世界知识产权组织 |
| 文献子类 | 发明申请 |
| 其他题名 | Methods and apparatus for single-mode selection in quantum cascade lasers |
| 英文摘要 | Methods and apparatus for improved single-mode selection in a quantum cascade laser. In one example, a distributed feedback grating incorporates both index-coupling and loss-coupling components. The loss-coupling component facilitates selection of one mode from two possible emission modes by periodically incorporating a thin layer of "lossy" semiconductor material on top of the active region to introduce a sufficiently large loss difference between the two modes. The lossy layer is doped to a level sufficient to induce considerable free-carrier absorption losses for one of the two modes while allowing sufficient gain for the other of the two modes. In alternative implementations, the highly-doped layer may be replaced by other low-dimensional structures such as quantum wells, quantum wires, and quantum dots with significant engineered intraband absorption to selectively increase the free-carrier absorption losses for one of multiple possible modes so as to facilitate single-mode operation. |
| 公开日期 | 2010-05-27 |
| 申请日期 | 2009-11-05 |
| 状态 | 未确认 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/66213]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | PRESIDENT & FELLOWS OF HARVARD COLLEGE |
| 推荐引用方式 GB/T 7714 | CAPASSO, FEDERICO,LEE, BENJAMIN, G.,PFLUGL, CHRISTIAN,et al. Methods and apparatus for single-mode selection in quantum cascade lasers. WO2010059180A2. 2010-05-27. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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