Vertical cavity laser light beam monitored by reflection of a half mirror, with application in optical pick-up
文献类型：专利
| 作者 | MUN, JONG-KUK |
| 发表日期 | 1997-09-02 |
| 专利号 | US5663944 |
| 著作权人 | QIANG TECHNOLOGIES, LLC |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Vertical cavity laser light beam monitored by reflection of a half mirror, with application in optical pick-up |
| 英文摘要 | There is provided a device for monitoring the light output of a VCSEL and a recording and reproducing optical pick-up adopting the device. The device for monitoring the light output of a VCSEL has a half mirror positioned in front of a VCSEL, for reflecting a portion of the light emitted from the VCSEL, and a monitoring optical detector positioned behind the VCSEL, for detecting the light reflected from the half mirror. The recording and reproducing optical pick-up employing the device includes a VCSEL having a light-emitting surface for emitting light vertically from the light-emitting surface, a light output monitor for monitoring the light output of the VCSEL, an objective lens for concentrating incident light on an optical recording medium to form an optical spot thereon, a light path changer for changing a path of the light reflected from the optical recording medium, and a first optical detector for receiving the reflected light and detecting an error signal and an information signal. The light output monitor comprises a half mirror positioned in front of the VCSEL, for reflecting a portion of the light emitted from the VCSEL, and a second monitoring optical detector positioned behind the VCSEL, for detecting the light reflected from the half mirror. |
| 公开日期 | 1997-09-02 |
| 申请日期 | 1995-12-29 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/40725]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | QIANG TECHNOLOGIES, LLC |
| 推荐引用方式 GB/T 7714 | MUN, JONG-KUK. Vertical cavity laser light beam monitored by reflection of a half mirror, with application in optical pick-up. US5663944. 1997-09-02. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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