| Optical systems for lasers | |
| BROOM RONALD FRANCIS JOHNST ON | |
| 1966-09-01 | |
| 著作权人 | NATIONAL RESEARCH DEVELOPMENT CORPORATION |
| 专利号 | GB1040792A |
| 国家 | 英国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical systems for lasers |
| 英文摘要 | 1,040,792. Optical apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 23, 1965 [Feb. 24, 1964], No. 7521/64. Heading G2J. [Also in Division H3] The divergent output from a P-N junction semi-conductor laser M, Fig. 1, is collimated by two orthogonal plane-cylindrical lens L 1 L 2 arranged in tandem, each lens being spaced from the emitting surface of the laser by a distance # 1 # 2 at least equal to the focal distance of the lens. A row of lasers energized in series from the same current source may have their outputs collimated into a single beam by a single plano-cylindrical lens L1 common to all the lasers at a distance # 1 and by individual piano cyclindrical lens L2 at a distance #2 Fig. 2 (not shown). This arrangement may be extended for a matrix of semi-conductor lasers, a single lens L1 being common to each row and a single lens L2 common to each column, Fig. 3 (not shown). A single row of lasers contained in a windowed dewar vessel cooled by liquid nitrogen is described with reference to Figs. 4 to 6 (not shown), each diode laser M being soldered to a copper block C which adjustably supports a planocylindrical lens L The copper blocks are clamped to an anodized aluminium heat sink T and are connected in series by contact springs S. A common plano-cylindrical lens L2 external of the dewar vessel window is used, the lens being supported in a frame F moveable by a rack and pinion mechanism H, K. Each semi-conductor laser is formed of N-type gallium arsenide into which zinc is diffused to form the junction. Gold/zinc and antimony/tin alloy contacts are attached to the P- type and N-type surfaces respectively. Parallel polished surfaces are formed on the semi-conductor one of which is made wholly reflecting by silica and silver layers. |
| 公开日期 | 1966-09-01 |
| 申请日期 | 1964-02-24 |
| 状态 | 失效 |
| 内容类型 | 专利 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34650]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NATIONAL RESEARCH DEVELOPMENT CORPORATION |
| 推荐引用方式 GB/T 7714 | BROOM RONALD FRANCIS JOHNST ON. Optical systems for lasers. GB1040792A. 1966-09-01. |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论