Abstract

We reported a dual-wavelength femtosecond optical parametric oscillator (OPO) based on a temperature-tuned LiB₃0₅ crystal. The OPO was synchronously pumped by a frequency-doubled mode-locked Yb:fiber laser amplifier, providing 520 nm pump laser with durations of 250 fs at a repetition rate of 57 MHz. High efficiency and free tuning of dual-wavelength operation is obtained over the ranges of 658-846 nm and 2.45-1.35 μm. With a 8% output coupler (OC), the maximum signal output power is 390 mW pumped at 3 W with dual-wavelength operation while the maximum power of sum frequency generation (SFG) is 110 mw at 590 nm.

© 2014 Optical Society of America