Optical device, method of manufacturing the same, and laser module
US9025633B2 · kind B2 · utility
0Cited by
1References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Aug 9, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/176
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device includes a ridge semiconductor laser element formed on a substrate, a first insulating film coating a lateral wall portion of a ridge structure of the ridge semiconductor laser element, and a second insulating film coating the ridge structure from above the first insulating film in an end portion region of the ridge structure. The second insulating film has a density lower than a density of the first insulating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.