High efficiency phase-conjugate reflection in germanium and in inverted CO/sub 2/

Conference · Sun Jan 01 00:00:00 EST 1978

OSTI ID:6398017

Bigio, I J; Feldman, B J; Fisher, R A; Bergmann, E E

The first observation of phase-conjugate reflection of 10.6 ..mu..m is reported. We used a novel intracavity technique which is of general utility for any oscillating laser system. In one experimental arrangement, we placed germanium in a TEA CO/sub 2/ laser cavity to utilize the intracavity counterpropagating (strong) waves for degenerate 4-wave mixing. Reflectivities as high as 20% were obtained. In a second experimental arrangement, phase-conjugate reflection and amplification with an effective gain exceeding unity was obtained by redirecting the output of a TEA CO/sub 2/ laser oscillator into the active gain medium. The intense counterpropagating waves within the laser medium coupled with the saturated gain medium to provide the nonlinearity in a process analogous to degenerate four-wave-mixing.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6398017
• Report Number(s): LA-UR-78-3101; CONF-781221-2; TRN: 79-007978
• Resource Relation: Conference: 1978 international laser conference, Orlando, FL, USA, 11 Dec 1978
• Country of Publication: United States
• Language: English

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