Sensorless monitoring of laser power instability in a heat-assisted magnetic recording head
文献类型：专利
| 作者 | MACKEN, DECLAN; PERRY, TYLER LENN; TATAH, KARIM; DOROBANTU, ANDREI; LAMMERS, TODD MICHAEL |
| 发表日期 | 2019-09-10 |
| 专利号 | US10410668 |
| 著作权人 | SEAGATE TECHNOLOGY LLC |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Sensorless monitoring of laser power instability in a heat-assisted magnetic recording head |
| 英文摘要 | A slider configured for heat-assisted magnetic recording includes a laser diode optically coupled to a waveguide of the slider. A power supply is coupled to the laser diode. A preamplifier is coupled to the power supply. The preamplifier is configured to monitor a forward voltage across the laser diode while operating the laser diode at a constant current during a write operation, detect a change in the forward voltage indicative of laser power instability, and generate a signal in response to detecting the forward voltage change. |
| 公开日期 | 2019-09-10 |
| 申请日期 | 2019-01-16 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33192]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SEAGATE TECHNOLOGY LLC |
| 推荐引用方式 GB/T 7714 | MACKEN, DECLAN,PERRY, TYLER LENN,TATAH, KARIM,et al. Sensorless monitoring of laser power instability in a heat-assisted magnetic recording head. US10410668. 2019-09-10. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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