Integrated external diode laser module particularly suited to Raman spectroscopy
文献类型：专利
| 作者 | TEDESCO, JAMES M. |
| 发表日期 | 2003-05-13 |
| 专利号 | US6563854 |
| 著作权人 | KAISER OPTICAL SYSTEMS, INC. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Integrated external diode laser module particularly suited to Raman spectroscopy |
| 英文摘要 | An external cavity diode laser system which finds utility in many application areas, is particularly suited to fiber-coupled Raman Spectroscopy. A holographic transmission grating is disposed in the optical path to transmit elements of the beam having the nominal wavelength and reject beam elements of differing wavelengths. In a fiber-coupled arrangement, the lens used for focusing the exit beam from the module onto the entrance of the fiber acts as a spatial filter of the light dispersed by the transmission grating. In this configuration, the combination of the transmission grating and the focusing of the exit beam operates as a bandpass filter. The transmission grating is preferably oriented such that the elements of differing wavelengths are dispersed perpendicular to the long dimension of the diode. The module may further include a half-wave retarder supported between the external cavity and transmission gratings to rotate TM polarization orientations to TE polarization orientations. An optical isolator may be disposed in the optical path prior to the exit beam to control spurious reflection, and an optical sensor, preferably supported to receive weak reflections from the transmission grating, may be used to provide an optical power stabilizing feedback to the laser diode source. |
| 公开日期 | 2003-05-13 |
| 申请日期 | 2001-05-14 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/35411]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | KAISER OPTICAL SYSTEMS, INC. |
| 推荐引用方式 GB/T 7714 | TEDESCO, JAMES M.. Integrated external diode laser module particularly suited to Raman spectroscopy. US6563854. 2003-05-13. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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