Heat-assisted magnetic recording device capable of detecting degradation of nft by measuring back-heat from medium
文献类型：专利
| 作者 | MENDONSA, RIYAN; TRANTHAM, JON D.; KIELY, JAMES DILLON; LI, PENG; CHRISTENSEN, JOSHUA WARD |
| 发表日期 | 2018-11-15 |
| 专利号 | US20180330754A1 |
| 著作权人 | SEAGATE TECHNOLOGY LLC |
| 国家 | 美国 |
| 文献子类 | 发明申请 |
| 其他题名 | Heat-assisted magnetic recording device capable of detecting degradation of nft by measuring back-heat from medium |
| 英文摘要 | An apparatus comprises a laser diode configured to generate light during a write operation. A slider comprises a near-field transducer (NFT) and an optical waveguide. The slider is configured for heat-assisted magnetic recording and to communicate the light to the NFT via the waveguide. A writer heater of the slider is configured to receive power during the write operation. A thermal sensor is situated at or near an air bearing surface of the slider. The thermal sensor is configured to produce a sensor signal in response to sensing back-heating from the medium while the NFT generates heat during a write operation. Circuitry, coupled to the thermal sensor, is configured to compare the sensor signal to a threshold and generate an output signal indicative of degradation of NFT performance in response to the sensor signal exceeding the threshold. |
| 公开日期 | 2018-11-15 |
| 申请日期 | 2017-05-15 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59148]  |
| 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,TRANTHAM, JON D.,KIELY, JAMES DILLON,et al. Heat-assisted magnetic recording device capable of detecting degradation of nft by measuring back-heat from medium. US20180330754A1. 2018-11-15. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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