Thermally assisted magnetic recording head and magnetic recording apparatus
文献类型：专利
| 作者 | MATSUMOTO, TAKUYA; SHIMIZU, JUNICHIRO |
| 发表日期 | 2008-08-28 |
| 专利号 | US20080204916A1 |
| 著作权人 | HITACHI, LTD. |
| 国家 | 美国 |
| 文献子类 | 发明申请 |
| 其他题名 | Thermally assisted magnetic recording head and magnetic recording apparatus |
| 英文摘要 | A second waveguide is formed near a first waveguide for guiding light to the vicinity of a main pole of a thermally assisted magnetic recording head, and a portion of light propagated through the waveguide 1 is branched to the second waveguide. The light transmitting in the second waveguide is detected by a photodetector to detect an intensity of the light propagated through the first waveguide. In the magnetic recording apparatus, an intensity of a semiconductor laser is decreased when an amount of light incident to the photodetector is large and the intensity of the semiconductor laser is increased when the amount of light incident to the photodetector is small. By constituting a feedback loop as described above, the intensity of the light propagated through the first waveguide is kept constant. |
| 公开日期 | 2008-08-28 |
| 申请日期 | 2008-01-17 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/58211]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI, LTD. |
| 推荐引用方式 GB/T 7714 | MATSUMOTO, TAKUYA,SHIMIZU, JUNICHIRO. Thermally assisted magnetic recording head and magnetic recording apparatus. US20080204916A1. 2008-08-28. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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