Year: 1978
Type: conference-paper
Abstract: 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.
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1665227205