Method and device for driving semiconductor laser
文献类型：专利
| 作者 | HOSHI HIROAKI |
| 发表日期 | 1990-05-07 |
| 专利号 | JP1990118927A |
| 著作权人 | CANON INC |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Method and device for driving semiconductor laser |
| 英文摘要 | PURPOSE:To reduce noise in any mode of erasure, recording and reproduction by injecting a current including an AC component whose phase is almost inverted in nearly the same frequency to each of at least two current areas. CONSTITUTION:Plural current injection areas 23-25 are formed to a stripe in an active layer applying laser oscillation in a built-in type semiconductor laser 2. A signal representing the information to be recorded or reproduction is recognized by a microprocessor 35 via an interface 34, modulated by a modulation circuit 33 and a signal current is injected to the area 23 via a drive circuit 3 On the other hand, an AC current to reduce induced noise is obtained by an oscillation circuit 38 and an AC current whose phase is deviated by 180 deg. by an inverse circuit 39 is obtained. The AC current is superimposed onto a DC current via a capacitor 41 obtained from a DC bias circuit 37 via a coil 40 and a current including the AC component whose phase is deviated by 180 deg. is injected to the areas 24, 25 respectively. |
| 公开日期 | 1990-05-07 |
| 申请日期 | 1988-10-27 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59589]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | CANON INC |
| 推荐引用方式 GB/T 7714 | HOSHI HIROAKI. Method and device for driving semiconductor laser. JP1990118927A. 1990-05-07. |
入库方式： OAI收割
来源：西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。