Optical feedback light-emitting device
文献类型：专利
| 作者 | ASAKURA HIROYUKI; HAGIWARA KIYOKAZU; NISHIOKA MINORU; IIDA MASANORI |
| 发表日期 | 1989-05-17 |
| 专利号 | JP1989124281A |
| 著作权人 | MATSUSHITA ELECTRIC IND CO LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical feedback light-emitting device |
| 英文摘要 | PURPOSE:To offer an optical feedback light-emitting device in which a distance between a semiconductor laser element and a diffraction grating is made short, whose modulation frequency band is expanded and which can be modulated at high speed by a method wherein an output beam of the semiconductor laser element is incident on the diffraction grating, a diffracted beam is fed back to said semiconductor laser element and an output of a single wavelength is obtained from another end of the semiconductor laser element. CONSTITUTION:A beam 19 output from a semiconductor laser element 1 is collimated by using an aspherical lens 2 and is incident on a diffraction grating 3. The incident beam is dispersed in accordance with its wavelength; a beam of a specific wavelength decided by an inclination of the diffraction grating 3 is fed back to an active layer of the semiconductor laser element The semiconductor laser element 1 is oscillated by a wavelength of a fed-back beam and its frequency is stabilized. When the diffraction grating 3 is turned, a wavelength of an output beam 20 from the semiconductor laser element 1 is changed. Even when the aspherical lens 2 is composed of only one piece, its performance is identical to that of a lens formed by combining several spherical lenses; because one lens can stably control oscillation of the semiconductor laser element 1, a length of a resonator, i.e. a distance between the semiconductor laser element and the diffraction grating, can be made very short. |
| 公开日期 | 1989-05-17 |
| 申请日期 | 1987-11-09 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59543]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA ELECTRIC IND CO LTD |
| 推荐引用方式 GB/T 7714 | ASAKURA HIROYUKI,HAGIWARA KIYOKAZU,NISHIOKA MINORU,et al. Optical feedback light-emitting device. JP1989124281A. 1989-05-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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