1079.5-NM AND 1341.4-NM - LARGER ENERGY FROM A DUAL-WAVELENGTH ND-YALO3 PULSED-LASER

On the basis of oscillation conditions of simultaneous multiple-wavele ngth lasing that we have established, a larger-energy (1079.5 and 1341 .4 nm) dual-wavelength Nd:YAlO3 pulsed laser has been developed. Outpu t energies of 3.71 and 1.39 J with efficiencies of 1.29% and 0.48% for the 1341.4- and 1079.5-nm wavelengths, respectively, have been achiev ed. To our knowledge, this is the best result among simultaneous dual- wavelength solid-state lasers to date. The temporal and spatial distri butions of these beams obtained from a free-running dual-wavelength Nd :YAlO3 pulsed laser have also been measured. Experimental results show that the temporal and spatial overlap of the two beams is quite good for this type of laser.