Passively mode-locked optically pumped semiconductor external-cavity surface-emitting laser
文献类型：专利
| 作者 | PASCHOTTA, RUEDIGER; HAERING, RETO; KELLER, URSULA |
| 发表日期 | 2004-05-11 |
| 专利号 | US6735234 |
| 著作权人 | TIME-BANDWIDTH PRODUCTS AG |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Passively mode-locked optically pumped semiconductor external-cavity surface-emitting laser |
| 英文摘要 | A passively mode-locked optically pumped semiconductor vertical-external-cavity surface-emitting laser (OPS-EXSEL) is disclosed. The laser is mode locked by a semiconductor saturable absorber mirror (SESAM) which forms part of an external cavity. Both the beam-quality limitations of edge-emitting lasers, and the power restrictions of electrically pumped surface-emitting lasers are overcome. The laser uses a semiconductor wafer in which a stack of quantum wells is grown adjacent to a single Bragg-mirror structure. Light from one or more multi-mode high-power diode lasers is focused onto the face of the wafer and pumps the wells by absorption in the barrier regions. The area of the laser mode on the active mirror can be about 10times larger than the mode area on the facet of an edge-emitting laser, offering scope for the generation of high average power and large pulse energy. At the same time the external cavity enforces fundamental mode operation in a circular, near-diffraction-limited beam. With the laser, sub-picosecond pulse durations are achievable by eliminating coupled cavity effects and by external pulse compression. Band-gap engineering can be used to shape the pulses, or even integrate gain and saturable absorption within the same wafer. Thus, rugged, efficient pulsed laser sources with high average power in a nearly diffraction-limited beam, sub-picosecond pulse durations and multi-GHz repetition rates, which operate in a broad range of wavelengths accessible by bandgap engineering are made possible. |
| 公开日期 | 2004-05-11 |
| 申请日期 | 2000-02-11 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/35332]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | TIME-BANDWIDTH PRODUCTS AG |
| 推荐引用方式 GB/T 7714 | PASCHOTTA, RUEDIGER,HAERING, RETO,KELLER, URSULA. Passively mode-locked optically pumped semiconductor external-cavity surface-emitting laser. US6735234. 2004-05-11. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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