Abstract
We investigated thermal-lensing effects in a side-pumped 1.3μm Nd:YVO4 slab laser amplifier having a bounce geometry. The thermal-lens power during 1.3μm laser action was 1.3-times larger than that without laser action. Excited-state absorption is the main cause for increased heat loading during laser operation. The heat-loading formula in end-pumped 1.3μm vanadate lasers having low Nd doping can be extended to account for heat generation in diode-side-pumped vanadate bounce lasers having high Nd doping.
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