We investigate both theoretically and experimentally a self-pumped phase-conjugate resonator with two-pass four-wave mixing in a diode-pumped Nd:YAG amplifier. A transient model is presented to fit the energy and temporal results of the experiment. The influence of the input energy in the injected configuration and the influence of the output coupler reflectivity and diode pump energy in the self-starting configuration are analyzed. In the injected case a maximum phase-conjugate reflectivity of 32 is obtained. In the self-starting case a TEM<sub>00</sub> mode of 5.5 mJ in a 20-ns single-longitudinal-mode pulse is produced with a 10% reflectivity output coupler.
© 1998 Optical Society of America
(140.3410) Lasers and laser optics : Laser resonators
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5040) Nonlinear optics : Phase conjugation
Pierre Sillard and Arnaud Brignon, "Self-pumped phase-conjugate resonator with two-pass four-wave mixing in a diode-pumped Nd:YAG amplifier," J. Opt. Soc. Am. B 15, 2917-2928 (1998)