Laser temperature calibration in a HAMR device
US9236081B1 · kind B1 · utility
31Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2015 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Mar 31, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method includes setting a heat assisted magnetic recording (HAMR) device located in a data storage system having a laser to an operating temperature. A threshold laser current is determined. An optimal laser current is determined. The threshold laser current and the optimal laser current are stored in memory. The steps of determining a threshold laser current, determining an optimal laser current and storing the threshold laser current and the optimal laser current into the calibration table are repeated until acceptable device performance is achieved at more than one operating temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.