Cavityless oscillation through backward quasi-phase-matched second harmonic generation

C.Conti, G. Assanto, and S. Trillo

Opt. Lett. 24, 1139-1141 (1999)


In an amplifier, nonlinear feedback from mismatched backward second-harmonic generation leads to strong enhancement of parametric conversion. With reference to LiNbO3 quasi-phase-matched waveguides, we propose a parametric bistable device that operates simultaneously in two colors and in the cw or the self pulsed regime.