Theory and experiment of a short-pulse-laser pumped distributed feedback optical parametric oscillator

Abstract

We have developed the theory of a distributed-feedback optical-parametric oscillator pumped by a laser pulse length shorter than the round-trip length of the nonlinear gain material. We also demonstrated distributed-feedback optical-parametric oscillation in a 5-cm PPLN crystal pumped by a 430-ps passively Q-switched Nd:YAG laser.