Heat-assisted magnetic recording (HAMR) disk drive with fly-height sensing
文献类型：专利
| 作者 | MATSUMOTO, TAKUYA; REN, SHEN; SCHRECK, ERHARD; STAFFARONI, MATTEO; STIPE, BARRY CUSHING |
| 发表日期 | 2014-09-23 |
| 专利号 | US8842506 |
| 著作权人 | WESTERN DIGITAL TECHNOLOGIES, INC. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Heat-assisted magnetic recording (HAMR) disk drive with fly-height sensing |
| 英文摘要 | A heat-assisted magnetic recording (HAMR) disk drive with a primary waveguide that directs laser light from a laser diode to a near-field transducer includes a second waveguide for sensing the head-disk spacing or fly-height. The second waveguide has a sensor portion that senses the spacing and directs light representative of the spacing to the second waveguide's output end. The second waveguide may include a second or reference portion that is connected to the sensor portion and directs light representative of light input from the laser diode. The combined light from the two portions is directed to the second waveguide's output end. A detector, which may be a photo-diode, is located at the second waveguide's output end and provides a signal that may be coupled to a thermal fly-height controller to increase or decrease the fly-height. |
| 公开日期 | 2014-09-23 |
| 申请日期 | 2013-08-27 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/33024]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | WESTERN DIGITAL TECHNOLOGIES, INC. |
| 推荐引用方式 GB/T 7714 | MATSUMOTO, TAKUYA,REN, SHEN,SCHRECK, ERHARD,et al. Heat-assisted magnetic recording (HAMR) disk drive with fly-height sensing. US8842506. 2014-09-23. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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