Self-seeding method and apparatus for dual cavity type tunable laser utilizing diffraction grating
US5633884A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Mar 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1055
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Self-seeding method and apparatus for a dual cavity type tunable laser utilizing a diffraction grating are disclosed, in which first diffracted beams and 0th diffracted beams are utilized. The self-seeding method and apparatus for a dual cavity type tunable laser are constituted such that two oscillators are internally provided by utilizing a diffraction grating and by making a single medium shared, so that the respective oscillators would serve as a master oscillator and a slave oscillator, thereby making it possible to save optical devices. Further, in the present invention, only one partially reflecting mirror is disposed on the output portion of a GIM (grazing incidence with tuning mirror) type oscillator, so that a self-seeding would occur, and that the laser output would be greatly amplified with the oscillation linewidth maintained without variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.