Abstract

We report a high-power, cw, singly resonant optical parametric oscillator (SRO) using a simple, compact fiber pump laser architecture in the green. The SRO, based on MgO:sPPLT, is pumped by 9.6W of single-frequency cw radiation at 532nm obtained by single-pass second-harmonic generation (SHG) of a 30W Yb fiber laser, also in MgO:sPPLT. Using two identical crystals of 30mm length for SHG and SRO, we generate cw idler powers of up to 2W over 8551408nm, with a peak-to-peak power stability <11.7% over 40min, in a TEM00 spatial mode with M2<1.26. Using finite output coupling of the resonant wave, we extract 800mW of signal power with peak-to-peak power stability <10.7% over 40min, and a frequency stability <75MHz over 15min. The signal and idler output have TEM00 beam profile with M2<1.52 across the tuning range.

© 2009 Optical Society of America

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