Semiconductor laser device and driving method for the same as well as tracking servo system employing the same
文献类型：专利
| 作者 | FUKUNAGA, HIDEKI; YASUKAWA, KAORU; NAKAYAMA, HIDEO; UEKI, NOBUAKI; OTOMA, HIROMI; FUSE, MARIO |
| 发表日期 | 1996-07-02 |
| 专利号 | US5533042 |
| 著作权人 | FUJI XEROX CO., LTD. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Semiconductor laser device and driving method for the same as well as tracking servo system employing the same |
| 英文摘要 | A semiconductor laser device which allows high speed correction of the position of a laser spot on an optical disk is disclosed. The semiconductor laser device comprises an active layer which oscillates a laser beam when electric current is supplied thereto, and a plurality of independent electrodes for varying the current density distribution in the active layer to vary the intensity distribution of the laser beam to be emitted from an emergent face of the semiconductor laser device. With the semiconductor laser device, by supplying electric currents individually from the plurality of independent electrodes to vary the current density distribution in the active layer, the beam spot position can be corrected within the frequency bandwidth of several tens MHz by direct modulation of the semiconductor laser device. Also a driving method for the semiconductor laser device and a tracking servo system in which the semiconductor laser device is incorporated are disclosed. |
| 公开日期 | 1996-07-02 |
| 申请日期 | 1994-10-03 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33482]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | FUJI XEROX CO., LTD. |
| 推荐引用方式 GB/T 7714 | FUKUNAGA, HIDEKI,YASUKAWA, KAORU,NAKAYAMA, HIDEO,et al. Semiconductor laser device and driving method for the same as well as tracking servo system employing the same. US5533042. 1996-07-02. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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