Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment
文献类型：专利
| 作者 | TAKEUCHI, KANJI; SAHARA, KENJI |
| 发表日期 | 2003-02-13 |
| 专利号 | US20030031220A1 |
| 著作权人 | SONY CORPORATION |
| 国家 | 美国 |
| 文献子类 | 发明申请 |
| 其他题名 | Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment |
| 英文摘要 | A laser diode capable of reducing a radiating angle theta⊥ in the vertical direction, an optical pickup device, an optical disk apparatus, and optical communications equipment, all equipped with the laser diode which increases optical coupling efficiency. It has a first cladding layer of the first conductive type formed on a substrate, with an active layer on top of the first cladding layer and a second cladding layer of the second conductive type on top of the active layer. In at least the first or second cladding layer, it is formed of at least one optical guide layer having a higher refractive index than the first or second cladding layer and operating to expand a beam waist in the waveguide. This operation contributes to widening a region in which to shut up light, enabling a radiating angle theta⊥ in the vertical direction to be reduced. |
| 公开日期 | 2003-02-13 |
| 申请日期 | 2002-07-02 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/67465]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SONY CORPORATION |
| 推荐引用方式 GB/T 7714 | TAKEUCHI, KANJI,SAHARA, KENJI. Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment. US20030031220A1. 2003-02-13. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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