半導体レーザ
文献类型：专利
| 作者 | 北村 光弘; 小野 雄三; 小林 功郎 |
| 发表日期 | 1997-07-11 |
| 专利号 | JP2671317B2 |
| 著作权人 | 日本電気株式会社 |
| 国家 | 日本 |
| 文献子类 | 授权发明 |
| 其他题名 | 半導体レーザ |
| 英文摘要 | PURPOSE:To converge an output beam in an upward direction by a method wherein a diffraction grating is made to be a shape partially resembling a ripple whose cycle becomes short with a distance becoming more distant from a beam radiation end of an active layer, which is curved to be a concentrically circular shape or a shape resembling a concentric circle and whose center is situated near the beam radiation end. CONSTITUTION:A diffraction grating 7 is formed partially on an n-InP substrate 1 ; a waveguide layer 10, an active layer 4, a clad layer 5 and a contact layer 6 are laminated on it. In succession, a mesa stripe 13 is formed; the surface of the waveguide layer 10 excluding this part is exposed; a convergence grating coupler 11 is formed. The convergence grating coupler 11 is constituted in such a way that its cycle becomes small with a distance becoming more distant from the active layer 4 and that it is curved to be a circular arc whose center is situated near a beam radiation end of the active layer 4. Lastly, an electrode 8 is formed; a dielectric multilayer film 12 is formed on an end face of a laser; a desired semiconductor laser is obtained. As a result, a laser output beam radiated upward can be converged down to a spot of about 5mum. |
| 公开日期 | 1997-10-29 |
| 申请日期 | 1987-09-28 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/76915]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 日本電気株式会社 |
| 推荐引用方式 GB/T 7714 | 北村 光弘,小野 雄三,小林 功郎. 半導体レーザ. JP2671317B2. 1997-07-11. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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