Laser mode hop detection in a heat-assisted magnetic recording device using a slider sensor and laser modulation
文献类型：专利
| 作者 | MENDONSA, RIYAN; KIELY, JAMES DILLON; CHRISTENSEN, JOSHUA WARD; TRANTHAM, JON D.; BARRY, CHAD ROBERT; RAUSCH, TIM |
| 发表日期 | 2019-07-30 |
| 专利号 | US10366722 |
| 著作权人 | SEAGATE TECHNOLOGY LLC |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Laser mode hop detection in a heat-assisted magnetic recording device using a slider sensor and laser modulation |
| 英文摘要 | An apparatus comprises a laser diode configured to generate modulated light during a write operation in response to receiving modulated current having a mean amplitude that varies or is constant. A slider is configured for heat-assisted magnetic recording and to receive the modulated light. A writer heater of the slider is configured to receive power during the write operation having a magnitude that varies or is constant. A sensor is situated on or within the slider. The sensor is configured to produce a sensor signal representative of output optical power of the laser diode. Measuring circuitry is coupled to the sensor and configured to measure a change in the sensor signal indicative of a laser mode hop during the write operation. |
| 公开日期 | 2019-07-30 |
| 申请日期 | 2018-05-14 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33179]  |
| 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 | MENDONSA, RIYAN,KIELY, JAMES DILLON,CHRISTENSEN, JOSHUA WARD,et al. Laser mode hop detection in a heat-assisted magnetic recording device using a slider sensor and laser modulation. US10366722. 2019-07-30. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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