Dual-wavelength laser operation at 1064 and 914 nm in two Nd:YVO4 crystals

We present for the first time a dual-wavelength laser operation at 1064 and 914 nm in two NdYVO 4 crystals. A 879 nm laser diode is used to pump the first Nd:YVO 4 crystal emitting at 914 nm, and the second Nd:YVO 4 laser emitting at 1064 nm intracavity pumped at 914 nm. A total output power of 4.28 W at the two fundamental wavelengths was achieved at the absorbed pump power of 13.8 W. The M 2 values for 914 and 1064 nm lights at the maximum output power were found to be around 1.3 and 1.1, respectively.