Abbreviated Journal Title
ORIENTATION-PATTERNED GAAS; GENERATION; LASER; Optics
We demonstrate a broadly and continuously tunable optical parametric oscillator (OPO) based on orientation-patterned GaAs (OP-GaAs) operating at 2 kHz repetition rate. With the choice of the pump wavelength near lambda = 3 mu m, we were able to achieve tunable output in the whole range of 4-14.2 mu m with a linewidth between 2 and 6 cm(-1), using a single OP-GaAs structure with a domain reversal period of 150 mu m. The OPO output was tuned using (i) an intracavity diffraction grating, and (ii) fine adjustment of the pump wavelength near 3 mu m. In certain portions of the spectrum this system potentially allows fast (sub-millisecond scale) wavelength tuning over > 2500 nm by fast steering the diffraction grating at a fixed pump wavelength.
Vodopyanov, K. L.; Makasyuk, I.; and Schunemann, P. G., "Grating tunable 4-14 mu m GaAs optical parametric oscillator pumped at 3 mu m" (2014). Faculty Bibliography 2010s. 6236.