| Semiconductor laser driving device | |
| KAKU TOSHIMITSU | |
| 1987-06-01 | |
| 著作权人 | 株式会社日立製作所 |
| 专利号 | JP1987119743A |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser driving device |
| 英文摘要 | PURPOSE:To reduce laser noises produced at the time of recording, reproducing, and erasing, by ceasing high-frequency drive under the recording and erasing modes. CONSTITUTION:A semiconductor laser 1 is driven by a driving circuit 2. A laser chip 3 and photodetector 4 for monitor are provided in the semiconductor laser 1 and the laser chip 3 is connected with a driving line 3 The photodetector 4 is connected with a detecting line 4 The driving circuit 2 is composed of a driver amplifier 21 which normally drives the laser chip 3 and high-frequency oscillator circuit 22 and the output line of the driver amplifier 21 and output line of the oscillator circuit 22 are directly coupled with each other through a capacitor C and become the driving line 3 Upon receiving pulses from a host controller 5 at the time of recording and erasing, the driver amplifier 21 makes pulse oscillation in accordance with the pulses. |
| 公开日期 | 1987-06-01 |
| 申请日期 | 1985-11-20 |
| 状态 | 失效 |
| 内容类型 | 专利 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68827]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 株式会社日立製作所 |
| 推荐引用方式 GB/T 7714 | KAKU TOSHIMITSU. Semiconductor laser driving device. JP1987119743A. 1987-06-01. |
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