We show that nanosecond optical parametric oscillators pumped well above threshold by single-longitudinal-mode pulses produce signal and idler light that is nearly purely phase modulated under a variety of conditions, including both seeded and unseeded operation.
© 1996 Optical Society of America
D. J. Armstrong and A. V. Smith, "Tendency of nanosecond optical parametric oscillators to produce purely phase-modulated light," Opt. Lett. 21, 1634-1636 (1996)