Calibration and adjusting target pre-write clearance offset for a heat-assisted magnetic recording device
文献类型：专利
| 作者 | MADER, DREW MICHAEL; KIMBLE, STEVEN J.; RIDDERING, JASON W. |
| 发表日期 | 2018-06-05 |
| 专利号 | US9990950 |
| 著作权人 | SEAGATE TECHNOLOGY LLC |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Calibration and adjusting target pre-write clearance offset for a heat-assisted magnetic recording device |
| 英文摘要 | An apparatus comprises a slider configured for heat-assisted magnetic coupled to a controller. The slider comprises a writer, a heater, a near-field transducer, and an optical waveguide for communicating light from a laser diode to the near-field transducer. The controller is configured to set a target pre-write clearance of the slider prior to performing a write operation, set a target write clearance of the slider for performing the write operation, and determine a difference between the target pre-write and write clearances to define a target pre-write clearance offset. The controller is also configured to measure, for a plurality of different target pre-write clearance offsets, a writability metric for the slider while sweeping a laser diode current, and adjust the target pre-write clearance offset so that the writability metric reaches a predetermined threshold. The controller is further configured to perform subsequent write operations using the adjusted target pre-write clearance offset. |
| 公开日期 | 2018-06-05 |
| 申请日期 | 2017-07-17 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33160]  |
| 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 | MADER, DREW MICHAEL,KIMBLE, STEVEN J.,RIDDERING, JASON W.. Calibration and adjusting target pre-write clearance offset for a heat-assisted magnetic recording device. US9990950. 2018-06-05. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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