Thermal-assisted magnetic recording head and magnetic recording apparatus
US7852713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2006 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Sep 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thermal-assisted magnetic recording head which heats a magnetic bit of a magnetic disk by light radiation in recording magnetic data into the magnetic disk with a magnetic writing element. The magnetic recording head has a reflecting converging element with a surface emitting laser incorporated therein, and a transparent plate serving as a slider. A laser beam emitted from the surface emitting laser is reflected by a mirror surface of the reflecting converging element and is converged on a plasmon probe formed on a bottom surface of the transparent plate. Thereby, near-field light effuses from the plasmon probe into a very small area and heats the magnetic bit of the magnetic disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.