Semiconductor laser light source with photocurrent feedback control for single mode operation
文献类型：专利
| 作者 | SPILIOS, RIYOPOULOS |
| 发表日期 | 2004-09-21 |
| 专利号 | US6795470 |
| 著作权人 | LEIDOS, INC. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Semiconductor laser light source with photocurrent feedback control for single mode operation |
| 英文摘要 | A semiconductor laser, for example a Vertical Cavity Surface Emitting Laser (VCSEL), includes one or more photoactive layers to improve the fundamental mode operation of lasing. The photoactive layer(s) provides on-axis current channeling, resulting from the selective drop in resistance around the center of the photoactive layer(s) due to photo-excitation, and counteracts"hole burning" (i.e. carrier depletion) of the center axis region of the VCSEL cylinder. The photoactive layer(s) act as a variable resistivity screen(s) whose radial aperture is controlled by the light itself. The absorption of a small fraction of the light intensity suffices for significant on-axis current peaking with minimum efficiency loss and optical mode distortion. Thus, the VCSEL has optically pumped photoactive layers that induce significant, self-regulated, on-axis current channeling and fundamental mode stability at high operation current, improving lasing operation. Further, the VCSEL photoactive layers may be fabricated using molecular beam epitaxy and thus do not require wafer post processing. |
| 公开日期 | 2004-09-21 |
| 申请日期 | 1999-06-09 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/44328]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | LEIDOS, INC. |
| 推荐引用方式 GB/T 7714 | SPILIOS, RIYOPOULOS. Semiconductor laser light source with photocurrent feedback control for single mode operation. US6795470. 2004-09-21. |
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。