We report a high-energy optical parametric oscillator (OPO) synchronously pumped by a , Yb:fiber- amplified, picosecond, gain-switched laser diode. The 42-m-long ring cavity maintains a compact design through the use of an intracavity optical fiber. The periodically poled MgO-doped OPO provides output pulse energies as high as at (signal) and at (idler). Tunability from 1.5 to and from 2.9 to is demonstrated, and typical values of and are measured for the signal and idler, respectively, at high power.
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