Atomic frequency oscillator

Details Atomic frequency oscillator Atomic frequency oscillator

1996-03-06

1997-08-12

Mis, David

Oscillators

Automatic frequency stabilization using a phase or frequency...

Molecular resonance stabilization

331 941, H03B 1700, H03L 726

Patent

active

056569742

ABSTRACT:
The atomic frequency oscillator comprises a resonance cell (41) placed in a microwave resonator (53) surrounded by an electromagnetic shield (58). A laser module (10) emits a light beam which reaches the resonance cell and is used for optically pumping rubidium into the resonance cell. The light beam is conducted from the laser module to the resonance cell by an optical fiber (14) passing through the electromagnetic shield. The optical path traveled by the light beam does not include any beamsplitter. At least one controller uses the light beam conducted by the optical fiber for controlling the injection current and/or the temperature of the laser diode so as to stabilize the light emission frequency. The resonance cell serves both as resonance cell for controlling an oscillator (54) generating via a frequency multiplier (55) the signal for exciting the microwave resonator and as cell for controlling the laser diode (11).

REFERENCES:
patent: 5195102 (1993-03-01), McLean et al.
patent: 5387881 (1995-02-01), Schweda et al.
patent: 5442326 (1995-08-01), Liberman
patent: 5553087 (1996-09-01), Telle

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