Coherent light generators – Particular resonant cavity – Specified output coupling device
Patent
1984-05-24
1986-08-05
Buczinski, Stephen C.
Coherent light generators
Particular resonant cavity
Specified output coupling device
372 93, 372 95, H01S 308, H01S 3081
Patent
active
H00000990
ABSTRACT:
A modular unstable ring resonator utilizing several independent gain modules is used to obtain output of a multiple set of mutually coherent beams. Additionally, rigorous mutual coherence is maintained even when the system operates on more than one longitudinal mode or/and on more than one gain transition; specific frequency-control elements are eliminated; satisfactory operation is possible with one or more gain-medium modules disabled. Each segment of the ring resonator's optical path may contain a laser gain medium, an output mirror, and a beam expander for continuously circulating a portion of the system flux while also coupling out a portion of the flux from each output mirror. The plural outputs may be used individually or collectively.
REFERENCES:
patent: 3772609 (1973-11-01), Willett et al.
patent: 4011523 (1977-03-01), Mansell et al.
patent: 4021845 (1977-05-01), Wang
patent: 4190814 (1980-02-01), Von Workum
Bykov et al. "CO.sub.2 Laser Generating Simultaneously Two Wavelengths and Having High Amplitude & Freq. Stability", Prebory i Teckhncka _E'ksperumenta, No. 6, pp. 161-162, Nov.-Dec. 1974.
Buholz; "Selected Five-color Operation of a CO.sub.2 laser"; Optical Eng.; Mar./Apr. 1981, vol. 20, No. 2.
Harney; "Active Laser Resonator Control Techniques"; Appl. Optics vol. 17, No. 11, Jun. 1, 1978, p. 1671.
Cason, III Charles M.
Jones Robert W.
Perkins James F.
Buczinski Stephen C.
Bush Freddie M.
Garvin John C.
Lane Anthony T.
The United States of America as represented by the Secretary of
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