Abstract
We report on an optical parametric oscillator (OPO) based on a large aperture periodically poled 5 mol % MgO-doped LiNbO3 (PPMgLN). A high average power Q-switched Nd:YAG laser operating at 1.064 µm producing 10 ns pulses at a repetition rate of 10 Hz was used to pump the OPO. Total output pulse energy of 126 mJ at 2 µm with 62% slope efficiency was achieved at relatively low pump power intensity. Temperature tuning behavior of the quasi-phase matched OPO was also observed.
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