Abstract
We experimentally investigated the performance of diode-wing-pumped Tm:Y 3 Al 5 O 12 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 Tm 3+ -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. • We experimentally investigated the performance of diode-wing-pumped Tm:YAG laser. • We compared the laser performance between composite and non-composite crystals. • We compared laser spectra features between composite and non-composite crystals. • Red-shift of the laser spectra was experimentally observed. • Power scaling can be realized by using composite crystal with short doped segment.
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