Method for controlling coherence of semiconductor laser element
文献类型：专利
| 作者 | UEDA SADAAKI; OSHIMA NOBORU |
| 发表日期 | 1992-05-18 |
| 专利号 | JP1992144184A |
| 著作权人 | SHARP CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Method for controlling coherence of semiconductor laser element |
| 英文摘要 | PURPOSE:To reduce coherence of a laser to be generated and to reduce a return light noise by forming a clad layer between a current narrowing layer and a light emitting layer of a predetermined composition, and setting carrier concentration of the clad layer to a predetermined value or less. CONSTITUTION:A clad layer between a current narrowing layer and a light emitting layer is formed of Ga(1-x)AlxAs (0.3/cm or below. the cap concentrations of the emitting layer 4, a second clad layer 6 and a cap layer 6 are respectively 1-10X10/cm, 1-10X10/cm, 2-4X10/cm, and carrier concentration of a first clad layer 3 between the narrowing layer 2 and the emitting layer 4 is variously varied in a range of 5-30X10/cm by regulating adding amount of an impurity such as Mg, Zn, etc. The lower the carrier concentration becomes, the smaller a gamma value of an index or coherence becomes. This trend is particularly remarkable if the cap concentration in a region having high threshold current is 5X10/cm or below. |
| 公开日期 | 1992-05-18 |
| 申请日期 | 1990-10-04 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/64301]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SHARP CORP |
| 推荐引用方式 GB/T 7714 | UEDA SADAAKI,OSHIMA NOBORU. Method for controlling coherence of semiconductor laser element. JP1992144184A. 1992-05-18. |
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。