Abstract

We report on diode-pumped ${\mathrm{Nd}}^{3+}$-doped calcium barium niobate ferroelectric crystal (Nd:CBN-28) lasers at 1.06 and 1.34 μm. The maximum output power of the 1.06 μm laser reaches 0.69 W in the continuous-wave regime, which is believed to be the highest output power with Nd:CBN-28 crystal to date. Using a chopper to modulate the pump, the highest output power further improves to 0.77 W. Passively $Q$-switched laser operation at 1.06 μm, using a Cr:YAG saturable absorber, is realized with a maximum average output power of 89 mW, a pulse width of 220 ns, and a pulse energy 10.8 μJ. A quasi-continuous-wave laser at 1.34 μm with a chopper is also demonstrated with maximum output power of 56 mW. The scaled output power in the fundamental wave should be favorable for the investigation on broadband nonlinear self-frequency conversion into visible.

© 2017 Optical Society of America

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