Method of frequency-stabilization of a laser and a laser for car

Details Method of frequency-stabilization of a laser and a laser for car Method of frequency-stabilization of a laser and a laser for car

1975-05-09

1976-08-24

Sikes, William L.

Oscillators

Molecular or particle resonant type

H01S 313

Patent

active

039769577

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.

REFERENCES:
patent: 3588738 (1971-06-01), Goodwin
patent: 3596201 (1971-07-01), Chester
patent: 3718868 (1973-02-01), Pao et al.
patent: 3742382 (1973-06-01), Smith

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