Method of frequency-stabilization of a laser and a laser for carrying out said method
US3976957A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1975 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | May 9, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/092
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a method for stabilizing the frequency of the stimulated radiation emitted by a laser, the radiation is subjected to a first rotation of its direction of polarization by applying a magnetic field to a material which exhibits the phenomenon of magnetic rotatory polarization and is placed in a two-mirror resonator. Anisotropic losses are introduced in the resonator so as to produce a second rotation of the direction of polarization, part of the radiation contained in the resonator is extracted and its direction of polarization D is measured. The direction D is held in a reference direction D.sub.O by measuring the difference between the two directions, by reducing this difference to zero and by modifying the value of the resonant frequency of the resonator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.