Heat-assisted magnetic recording laser with a curved facet
US11176962B1 · kind B1 · utility
0Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2020 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Sep 10, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/185
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A heat-assisted magnetic recording head includes a slider body having a waveguide that delivers light to a near-field transducer. The waveguide is optically coupled to an input coupler a of the slider body that receives the light. A laser diode is mounted on or in the slider body. The laser diode has an integral exit facet proximate the input coupler. The exit facet has a curved profile that modifies a shape of the light emitted from the exit facet into the input coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.