Output control equipment for semiconductor laser
文献类型：专利
| 作者 | TAKEYAMA YOSHINOBU |
| 发表日期 | 1988-04-16 |
| 专利号 | JP1988086589A |
| 著作权人 | RICOH CO LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Output control equipment for semiconductor laser |
| 英文摘要 | PURPOSE:To obtain stable light output from the time of rising, by providing a driving circuit for a semiconductor laser with a current correction circuit which makes it output a driving current delayed by a specified time constant at the time of rising. CONSTITUTION:The output of a back beam emitted from a semiconductor laser 1 is compared with a reference signal Vref in a comparator 3, and an up-down counter 5 is operated by a difference signal. Thus the light output of the semiconductor laser l is adjusted so as to be almost constant in respect to Vref. A video signal Video. is delivered to the semiconductor laser 1 via a current correction circuit 9. As the current correction circuit 9 has a function which gives the video signal a delay of time constant r at the time of rising, the rising part of the driving current is delayed by a time constant g and is smoothed. The light output of the semiconductor laser l corresponding with the above driving current becomes almost constant from when the output rises up. |
| 公开日期 | 1988-04-16 |
| 申请日期 | 1986-09-30 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59479]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | RICOH CO LTD |
| 推荐引用方式 GB/T 7714 | TAKEYAMA YOSHINOBU. Output control equipment for semiconductor laser. JP1988086589A. 1988-04-16. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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