Widely Tunable (2.2 – 10.4 μm) BaGa4Se7 Optical ParametricOscillator Pumped by a Q-switched Nd:YLiF4 Laser

We report on the first BaGa4Se7 nanosecond optical parametric oscillator pumped by Qswitched Nd:YLiF4 laser at 1053nm. Mid-infrared idler wave tuning from 2.2 μm to 10.4 μm is demonstrated with an angle-tuned type-I (o-ee) y-cut sample.