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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper CFF6

Continuous-wave and pulsed phase conjugation in Nd:YVO4

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Abstract

Phase conjugation by degenerate four-wave mixing (DFVVM) in solid-state laser media is a nonlinear process of major interest for applications to dynamic holography and phase-distortion correction of an optical wave propagating in laser media.1-4 The use of laser amplifiers for such operations presents very attractive features including the automatic matching of the nonlinearity with the laser wavelength, a fast response time, and a high efficiency of the nonlinear process due to the laser amplification of all interacting beams. Most DFWM experiments in solid-state laser amplifiers were performed in the transient regime with nanosecond pulses of duration tp much shorter than the population relaxation time τ of the laser transition.1,2,5 In this work we present, for the first time to our knowledge, demonstrations of DFWM in a Nd:VO4 amplifier in the cw regime and also with pulses of duration tp = 200 μs longer than τ (τ = 75 μs in our crystal).6

© 1996 Optical Society of America

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