We present a theoretical treatment of difference-frequency generation in conditions of phase mismatch for seed and generated fields that propagate at different angles to the pump. The analytical solution in the case of nondepleted plane-wave pump and experiments performed with seed fields strongly phase and amplitude modulated show that the pump-field wave fronts behave as efficient phase-conjugating mirrors.
© 2003 Optical Society of America
(100.5070) Image processing : Phase retrieval
(140.3280) Lasers and laser optics : Laser amplifiers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.5040) Nonlinear optics : Phase conjugation
Viktor N. Mikhailov, Maria Bondani, Fabio Paleari, and Alessandra Andreoni, "Optical phase conjugation in difference-frequency generation," J. Opt. Soc. Am. B 20, 1715-1723 (2003)