High-efficiency laser-diodes-pumped microthickness Yb:Y_3Al_5O_(12) slab laser

摘要

A high-efficiency and high-power Yb:Y_3Al_5O_(12) oscillator was developed based on the microthickness slab structure with high aspect ratio to obtain one-dimensional temperature gradient and to reduce the temperature increase in the crystal. Laser output power of 257 W was obtained in cw oscillation with 42% optical conversion efficiency at a pump power of 608 W.