Comparative investigation- of diode-pumped Tm3+;YAIO 3 lasers: Influence of doping concentration

Abstract

We experimentally investigated the performance of diode-wing-pumped Tm:Y3Al5O12 crystalline laser operating at around 2 μm. By systematically making comparisons of laser performance in addition to the laser spectra features between composite and non-composite crystals with two different active segments length, we believed that using diffusion-bonded crystal with shorter Tm3+-doped active segment would be a feasible approach for simultaneously up-scaling the output power and slope efficiency in terms of reducing the reabsorption loss and thermal lensing effects.