Abstract
We investigate the performance of a magnesium-oxide-doped periodically poled lithium niobate crystal (MgO:PPLN) in an optical parametric oscillator (OPO) synchronously pumped by , , pulses with an average power of up to from a frequency-doubled, gain-switched LD seed and a multistage Yb:fiber amplifier system. The OPO produces (signal, ) and (idler, ) of average power for of pump power and can be tuned from to (signal) and 1.28 to (idler). Observations of photorefraction and green-induced infrared absorption in different operational regimes of the MgO:PPLN OPO are described and the role of peak intensity and average power are investigated, both with the aim to find the optimal operating regime for pulsed systems.
© 2011 Optical Society of America
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