title: Tendency of nanosecond optical parametric oscillators to produce purely phase-modulated light.
abstract: We show that nanosecond optical parametric oscillators pumped well above threshold by single-longitudinalmode pulses produce signal and idler light that is nearly purely phase modulated under a variety of conditions, including both seeded and unseeded operation.
authors.forename: D J
authors.initials: DJ
authors.lastname: Armstrong
authors.forename: A V
authors.initials: AV
authors.lastname: Smith