Abstract

This paper reports a tunable diode-pumped folded intracavity Q-switched singly resonant optical parametric oscillator based on multi-period MgO:PPLN. A wide tuning mid-infrared parametric light from 2.78 μm to 4.17 μm was obtained in real time by changing the poled periods and temperatures. The maximum output power of 1.89 W at 3.2 μm, 1.53 W at 3.5 μm, 0.87 W at 3.8 μm and 0.486 W at 4.1 μm were achieved. The highest optical-optical conversion efficiency was 7.89%. During experiments, a range tunable output of 2.78–4.17 μm in the mid-infrared range was achieved.

© 2021 Optical Society of Korea

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