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.
© 2002 Optical Society of AmericaFull Article | PDF Article
T. D. Raymond and A. V. Smith
Opt. Lett. 16(1) 33-35 (1991)
S. T. Yang, R. C. Eckardt, and R. L. Byer
Opt. Lett. 18(12) 971-973 (1993)
M. J. T. Milton, T. D. Gardiner, G. Chourdakis, and P. T. Woods
Opt. Lett. 19(4) 281-283 (1994)