Semiconductor laser apparatus, information recording/reproducing apparatus and image recording apparatus
文献类型：专利
| 作者 | TAGUCHI, TOYOKI |
| 发表日期 | 1996-11-26 |
| 专利号 | US5579329 |
| 著作权人 | KABUSHIKI KAISHA TOSHIBA |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Semiconductor laser apparatus, information recording/reproducing apparatus and image recording apparatus |
| 英文摘要 | A semiconductor laser apparatus comprises a semiconductor laser, a photodetector, first and second variable gain units, a controllable amplifying unit, a driving unit, and a compensation unit. A control signal is supplied to one of input terminals of each of the first and second variable gain units and an output signal of the photodetector is negative-fed back to the other of the input terminals of each of the first and second variable gain units. A varied gain of an error between the control signal and the output signal is output independently from each of the first and second variable gain units. The controllable amplifying unit amplifies the error signal from the first variable gain unit with desired frequency characteristics. The driving unit supplies a driving current to the semiconductor laser in accordance with a drive control signal from the controllable amplifying unit. The compensation unit negatively feeds back a compensation current to the negative feedback terminals to compensate a phase delay on the basis of the error signal output from the second variable gain unit. |
| 公开日期 | 1996-11-26 |
| 申请日期 | 1995-06-05 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33499]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | KABUSHIKI KAISHA TOSHIBA |
| 推荐引用方式 GB/T 7714 | TAGUCHI, TOYOKI. Semiconductor laser apparatus, information recording/reproducing apparatus and image recording apparatus. US5579329. 1996-11-26. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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