Ti:sapphire Laser Pumped Nd:GdVO_4 Microchip Lasers

With a Ti:sapphire laser as the pump source,the efficient laser output of a Nd:GdVO_4 microchip was reported.The length of the crystal was 1 mm.Its one end face was high-reflective coated at 1.06 μm and anti-reflective coated at 808 nm,and the other end face was partial-reflective coated at 1.06 μm(T=1%),which form a flat-flat resonator.The pump threshold was only 18 mW,the slope efficiency was 50.7%,and the optical conversion efficiency was 47.9%.The absorption coefficient and the fluorescence lifetime of Nd:GdVO_4 microchip were measured,which were 32.7 cm~(-1)and 120 μs,respectively.