Laser modulating circuit
文献类型：专利
| 作者 | TOYAMA TAKEO; OOTA OSAMU |
| 发表日期 | 1985-05-17 |
| 专利号 | JP1985087440A |
| 著作权人 | SANYO DENKI KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Laser modulating circuit |
| 英文摘要 | PURPOSE:To form a hole in a satisfactory form to a disk by setting the laser output intensity at its maximum level at rise, and modulating the intensity so as to reduce the level of intensity exponentially. CONSTITUTION:When a signal to be recorded and shown in a figure (a) is supplied through a terminal A, a differential pulse (figure b) is obtained through a differentiating circuit 3. This pulse is supplied to the base of a transistor TR5, and a current I shown in a figure (c) flows to the TR5. While a current IRF and a bias current IB flow to a TR3 and a TR4 respectively. Therefore a synthesized current (figure d) of currents I, IRF and IB flows to a laser LD. The output intensity of the LD is maximum at its rise as shown in a figure (e), then reduces the intensity exponentially. Thus the form of the hole drilled to a disk has no change immediately after irradiation and before the end of irradiation of the laser output. |
| 公开日期 | 1985-05-17 |
| 申请日期 | 1983-10-18 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59337]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SANYO DENKI KK |
| 推荐引用方式 GB/T 7714 | TOYAMA TAKEO,OOTA OSAMU. Laser modulating circuit. JP1985087440A. 1985-05-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
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。