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F. Kienle, P. S. Teh, S. Alam, C. B. E. Gawith, D. C. Hanna, D. J. Richardson, and D. P. Shepherd
Abstract
We report a high-energy optical parametric oscillator (OPO) synchronously-pumped by a 7.19MHz, Yb-fiber-amplified, picosecond, gain-switched laser diode. The 42m long ring cavity maintains a compact design through the use of an intra-cavity optical fiber. The periodically-poled MgO-doped LiNbO3 OPO provides output pulse energies as high as 0.49μJ at 1.5μm (signal) and 0.19μJ at 3.6μm (idler). Tunability from 1.5μm to 1.7μm and from 2.9μm to 3.6μm is demonstrated and typical M2-values of 1.3 by 1.5 and 1.9 by 2.8 are measured for the signal and idler, respectively, at high power.
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