Ring laser having amplitude and phase controlled externally inje

Details Ring laser having amplitude and phase controlled externally inje Ring laser having amplitude and phase controlled externally inje

1986-03-25

1989-02-28

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

048079987

ABSTRACT:
A portion of each of the pair of counter-propagating laser beams in a ring laser cavity are extracted and redirected back into the cavity with servo controlled phase and amplitude. The phase and amplitude of one of the redirected beams is a function of a common first discriminant signal but independently controlled, and the phase and the amplitude of the second redirected beam is responsive to a second mutually exclusive discriminant signal and independently controlled. The redirected beams are such as to minimize the internal back scattering effects within the ring laser cavity.

REFERENCES:
patent: 3697181 (1972-10-01), Macek et al.

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