Abstract
We report a stable, high-power, cw, mid-IR optical parametric oscillator using MgO-doped stoichiometric periodically poled (MgO:sPPLT) pumped by a Yb fiber laser at . The singly resonant oscillator (SRO), based on a long crystal, is tunable over from 3032 to and can generate as much as of mid-IR output power, with of over 60% of the tuning range and under reduced thermal effects, enabling room temperature operation. Idler power scaling measurements at are compared with an MgO-doped periodically poled cw SRO, confirming that MgO:sPPLT is an attractive material for multiwatt mid-IR generation. The idler output at exhibits a peak-to-peak power stability better than 12.8% over and frequency stability of , while operating close to room temperature, and has a linewidth of , limited by the resolution of the wavemeter. The corresponding signal linewidth at is .
© 2011 Optical Society of America
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