Narrowband tuning of a pulsed optical parametric oscillator (OPO) is achieved with a self-adaptive injection-seeded optical cavity employing a phase-conjugate reflector. This approach is used in a novel OPO system based on periodically poled KTiOPO<sub>4</sub> and pumped at 532 nm by a pulsed Nd7#x003A;YAG laser. The OPO is injection seeded at 835–855 nm by a continuous-wave tunable diode laser, which also enables a Rh:BaTiO<sub>3</sub> photorefractive crystal to act as a wavelength-selective phase-conjugate reflector, with no need for active control of cavity length. The single-longitudinal-mode tunability and operational simplicity of this OPO system are demonstrated experimentally.
© 2004 Optical Society of America
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.5040) Nonlinear optics : Phase conjugation
(190.5330) Nonlinear optics : Photorefractive optics
Yabai He and Brian J. Orr, "Narrowband tuning of an injection-seeded pulsed optical parametric oscillator based on a self-adaptive, phase-conjugate cavity mirror," Opt. Lett. 29, 2169-2171 (2004)