Optical head
文献类型：专利
| 作者 | TANAKA HIDENAO; SUZUKI YOSHIO; UKITA HIROO |
| 发表日期 | 1989-10-17 |
| 专利号 | JP1989260642A |
| 著作权人 | NIPPON TELEGR & TELEPH CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical head |
| 英文摘要 | PURPOSE:To obtain the stable output of a beam of high power density and a longer life by using a laser having an InGaAsP layer strong to light damage as a light source and using the same in proximity to an optical memory medium. CONSTITUTION:The optical head 1 is mounted to a slider 3 attached to a load spring 4 of an arm 5 which moves at a high speed in the radial direction of the optical memory medium 2. The distance (proximate quantity) between the optical head 1 and the memory medium 2 is maintained at the specified value determined by the load of the spring 4, the shape and weight of the slider 3 and the traveling speed of the memory medium 2. The semiconductor laser having the InGaAsP as the active layer 7 is used as the light source, then writing and reading are executed while the width of the exit end of the beam is approximate nearly to 1mum from the memory medium 2 by having a waveguide 6 narrower than the width of the central part. The stable output by the high light power at the end face of the laser and the longer life are thereby obtd. |
| 公开日期 | 1989-10-17 |
| 申请日期 | 1988-04-11 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/81903]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NIPPON TELEGR & TELEPH CORP |
| 推荐引用方式 GB/T 7714 | TANAKA HIDENAO,SUZUKI YOSHIO,UKITA HIROO. Optical head. JP1989260642A. 1989-10-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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