Laser power control circuit
文献类型：专利
| 作者 | KANNA MUNETAKE; KAWAMURA TOSHIHARU |
| 发表日期 | 1985-10-31 |
| 专利号 | JP1985217539A |
| 著作权人 | HITACHI SEISAKUSHO KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Laser power control circuit |
| 英文摘要 | PURPOSE:To reduce the deviation of the laser light quantity due to an environmental change without deteriorating the system stability, by using a cancelling circuit to compensate the effect of a write pulse emerging at the monitor voltage in a write mode. CONSTITUTION:A current is flowed to a laser diode 8 by a laser current driving circuit 7 to produce the laser light corresponding to the current. Then a current corresponding to the light quantity flows to a monitor diode 9, and the effect of a write pulse is cancelled for said current by a cancelling circuit 12 via a detection circuit 10. Then the current is fed back to an amplifier 1 A feedback signal is applied to the set value Vy via a sample/hold circuit 4 and a compensation circuit 5 to control the circuit 7. Thus it is possible to reduce the deviation of the laser light quantity due to an environmental change without deteriorating the system stability. |
| 公开日期 | 1985-10-31 |
| 申请日期 | 1984-04-13 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59357]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI SEISAKUSHO KK |
| 推荐引用方式 GB/T 7714 | KANNA MUNETAKE,KAWAMURA TOSHIHARU. Laser power control circuit. JP1985217539A. 1985-10-31. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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