ABSTRACT
We demonstrate a compact, efficient Nd:YVO(4) stable-unstable hybrid slab oscillator that was partially end pumped at 880 nm. A maximum output power of 165 W at 1064 nm was obtained with an optical-to-optical efficiency from absorbed pump power to laser output of up to 60% and a slope efficiency of up to 66%. The beam propagation factors M(2) were 1.7 in the stable direction and 1.4 in the unstable direction without sidelobes.
ABSTRACT
We report on a compact, efficient, and reliable monolithic Nd:YVO(4) slab oscillator-amplifier with an output power of 29.3 W in cw operation and an optical-to-optical efficiency of 24%. In electro-optically Q-switched operation, 28.8 W of average power at a repetition rate of 100 kHz with a pulse width of 15 ns was measured. The RMS stability of the pulse energy is better than 1.7%. The beam quality M(2) in both cw and pulse models was under 1.3.