Magnetic laser control

Details Magnetic laser control Magnetic laser control

1987-04-08

1988-10-18

Scott, Jr., Leon

Coherent light generators

Having an applied magnetic field

372 32, 372 20, 372 34, H01S 300

Patent

active

047792795

ABSTRACT:
The present invention comprises a method and means for stabilizing the frequency difference between the component frequency modes in the beam of a gas laser influenced by Zeeman splitting. Stabilizing the frequency difference makes constant the frequency of the beat signal obtained from heterodyning the component modes. Stabilization is obtained by accurately controlling the difference in frequency between the component frequency modes to provide a selected separation, preferably 250 KHz, with deviation maintained at less than two KHz. The difference in frequencies is controlled independently of the individual frequency or intensity of either of the component frequency modes, or of their relative position within the "Doppler broadened" spectral profile characteristic of the lasing material.

REFERENCES:
patent: 3649930 (1972-03-01), LeFloch
patent: 4398293 (1983-08-01), Hall et al.
patent: 4468773 (1984-08-01), Seaton
patent: 4672618 (1987-06-01), Wijntjes et al.

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