Output controller for semiconductor laser
文献类型：专利
| 作者 | SHIBATA ISAMU |
| 发表日期 | 1988-02-18 |
| 专利号 | JP1988038275A |
| 著作权人 | RICOH CO LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Output controller for semiconductor laser |
| 英文摘要 | PURPOSE:To simultaneously regulate the maximum and minimum value of a driving current of a semiconductor laser in response to an irregularity in the current of the laser to constantly maintain the quantizing error of a digital/ analog converter thereby to improve the controlling accuracy of an output controller for a semiconductor laser by providing a circuit for simultaneously regulating the maximum and minimum values of the driving current determined by the converter. CONSTITUTION:A digital/analog converter 16 outputs a current Imax determined by resistors R1, R2 when a digital input from from a counter 13 becomes maximum, the output is input to the inverting input terminal of a current amplifier 17, and a voltage Vmin in which a constant voltage is divided by a variable resistor VR is input to the noninverting input terminal of the amplifier 17. The maximum and minimum values I0pmax, I0pmin of the driving current I0p of a semiconductor laser 1 can be set at every driving current of the laser 1 when Vmin is regulated by a variable resistor VR by the irregularity of the driving current of the laser Thus, the quantizing error of the converter 16 becomes constant to control it accurately. |
| 公开日期 | 1988-02-18 |
| 申请日期 | 1986-08-01 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/68885]  |
| 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 | SHIBATA ISAMU. Output controller for semiconductor laser. JP1988038275A. 1988-02-18. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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