Single-mode, tunable output from a midwave-infrared-seeded optical parametric oscillator system

Applied Optics
John H MarquardtDuane D Smith

Abstract

We have built a coupled master oscillator and a slave oscillator optical parametric oscillator (OPO) system that provides single-frequency, pulsed radiation in the midwave infrared (MWIR). The direct-diode-pumped master OPO provided narrow-band (<6-MHz, instrument-limited), tunable MWIR cw radiation that was used to seed a higher-peak-power pulsed slave OPO. When seeded directly at the MWIR idler, the pulsed output of the slave OPO was constrained to oscillate on a single longitudinal mode even though the slave OPO is pumped by a multilongitudinal-mode laser source. The linewidth of the pulsed output has been measured to be <220 MHz (instrument limited), which is well suited for coherent differential absorption lidar applications.

Citations

Jan 4, 2003·Applied Optics·Frank Hanson, Mark Lasher
Jul 23, 2009·Applied Optics·Frank HansonMark Lasher
Dec 29, 2020·Applied Optics·Jean-Michel MelkonianJiří Kadlčák

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