Multibeam type optical pickup device
文献类型：专利
| 作者 | YAMANAKA YUTAKA |
| 发表日期 | 1986-08-18 |
| 专利号 | JP1986184735A |
| 著作权人 | NEC CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Multibeam type optical pickup device |
| 英文摘要 | PURPOSE:To form two kinds of different spots by forming a semiconductor laser of which the light source has plural luminous points on the same substrate and in which the astigmatism of at least one luminous point is larger than the astigmatism of the other luminous point and the respective luminous points are so formed as to permit independent driving. CONSTITUTION:An n-GaAs layer 2 is formed on the p-GaAs substrate 1 and grooves 11-14 for internal stripes having desired sizes are formed thereto by chemical etching, etc. A p-Al0.4Ga0.6As layer 3, an Al0.1Ga0.9As active layer 4, an n-Al0.4Ga0.6As layer 5 and an n-GaAs layer 6 are again successively formed thereon by a liquid phase crystal growth method. After an n side electrode 7 and a p side electrode 8 are formed, grooves 9 are provided between the respective laser elements by chemical etching or reactive ion etching to separate the elements. The two luminous points are thereby electrically separated and the independent driving is made possible. The width of the grooves for the internal stripes is so selected that the luminous point of the laser having the grooves 11, 13 for the internal stripes has hardly the astigmatism and that the luminous point of the laser having the grooves 12, 14 for the internal stripes has the astigmatism. |
| 公开日期 | 1986-08-18 |
| 申请日期 | 1985-02-12 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59402]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NEC CORP |
| 推荐引用方式 GB/T 7714 | YAMANAKA YUTAKA. Multibeam type optical pickup device. JP1986184735A. 1986-08-18. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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