Semiconductor laser device
US4847848A · kind A · utility
46Cited by
1References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1988 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Feb 16, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/48091
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor laser device comprises: a semiconductor laser including laser resonators for emitting laser beams forward and backward oppositely along a plurality of parallel axes; a photodetector including a plurality of photodetector elements for detecting intensities of the laser beams emitted backward; and a waveguide located between the semiconductor laser and the photodetector for guiding the backward emitted laser beams to the corresponding ones of the photodetector elements, the waveguide including a plurality of guide grooves for guiding the backward emitted laser beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.