We demonstrate the use of highly efficient degenerate four-wave mixing for phase conjugation with multipass geometries in a polymer laser dye saturable amplifier. Phase-conjugate energy reflectivity of as much as 20,000% with a four-pass geometry in the longitudinally pumped polymer dye was obtained at 564 nm.
© 1999 Optical Society of America
(140.2050) Lasers and laser optics : Dye lasers
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5040) Nonlinear optics : Phase conjugation
Hirofumi Watanabe, Takashige Omatsu, Tomohiro Hirose, Akira Hasegawa, and Mitsuhiro Tateda, "Highly efficient degenerate four-wave mixing with multipass geometries in a polymer laser dye saturable amplifier," Opt. Lett. 24, 1620-1622 (1999)