Optical element in semiconductor laser device having a diffraction grating and improved resonance characteristics
US4658403A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1984 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Oct 31, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2275
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosure is directed to an improved semiconductor laser device which includes a first light deriving optical waveguide connected approximately perpendicularly to a light exit face at one side, a second light deriving optical waveguide connected approximately perpendicularly to another light exit face at the other side and having an optical axis different from that of the first light deriving optical waveguide, and a light emitting optical waveguide subjected to optical coupling with a periodical diffraction grating for optical resonance, and connected to end portions of the first and second light deriving optical waveguides within the semiconductor laser device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.