Dynamical amplification of phase conjugation using a modulated optical   feedback in a Nd:YVO_4 laser
  We demonstrate an efficient dynamical amplification of phase conjugation in the gain medium of a diode-pumped Nd3+:YVO4 solid state laser via excitation of its relaxation oscillations. Consequently, enhancement in the modulated amplitude of the phase conjugate wave is observed with up to +30 dB compared to classical homodyne approach. 
Herv\'e Gilles (CIMAP - UMR 6252), Sylvain Girard (LHC), Mathieu   Laroche (CIMAP - UMR 6252), Eric Lacot (LIPhy)
physics.optics