Frequency stabilized light source
US4913525A · kind A · utility
29Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1989 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Apr 3, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1055
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a frequency stabilized light source including a semiconductor laser chip and a finite Fourier diffraction grating with a corrugated profile with a continuous first order differential coefficient. The laser chip emits the output light from its one facet into the diffraction grating with the diffracted light from the grating being fed back to the laser chip, so that the laser chip emits the output light with a stable wavelength from its another facet. The arrangement produces the output light with high frequency purity and high adjustment accuracy and yet wide frequency tunable range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.