Quasi-Phase-Matched Optical Parametric Oscillator And Its Optimal Design

Based on analyzing optical parametric oscillator ( OPO) in the quasi-phase-matched condition, the relationship between the grating period and parametric gain was discussed in singly-resonant optical parametric oscillators. Then, the dependence of threshold energy on the cavity length, the crystal length, the pump pulsewidth and the signal wave output coupling was analyzed in detail. Finally, the theory was proved applicable by our experiments.