Noise reducing method for semiconductor laser device
文献类型：专利
| 作者 | YOSHIKAWA NORIYUKI; SHIMIZU YUICHI; ITO KUNIO; TAMURA MITSUO |
| 发表日期 | 1988-04-14 |
| 专利号 | JP1988084178A |
| 著作权人 | MATSUSHITA ELECTRIC IND CO LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Noise reducing method for semiconductor laser device |
| 英文摘要 | PURPOSE:To reduce the noise of a semiconductor laser to a sufficiently low level, by taking out part of output light from the front direction of the semiconductor laser, converting the light into an electric signal, negatively feeding back the electric signal to a driving current for the semiconductor laser, and superimposing a high frequency on the driving current. CONSTITUTION:Laser light, which is emitted from a semiconductor laser 1 driven by a DC source 3, passes through a beam splitter (BS) 6. The light is converged on an optical disk through a focusing lens 5. The light, which is reflected with the BS 6, is converged on a signal detecting diode 8 through a focusing lens 5. Meanwhile, part of the laser light is reflected on the BS 6 and inputted into a noise detecting photodiode 10 through a focusing lens 9. The noise component is converted into an electric signal. The output signal is negatively fed back to a driving current for the laser 1 through an amplifier circuit 11, and high frequency superimposing action is performed. |
| 公开日期 | 1988-04-14 |
| 申请日期 | 1986-09-29 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59477]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | MATSUSHITA ELECTRIC IND CO LTD |
| 推荐引用方式 GB/T 7714 | YOSHIKAWA NORIYUKI,SHIMIZU YUICHI,ITO KUNIO,et al. Noise reducing method for semiconductor laser device. JP1988084178A. 1988-04-14. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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