Abstract
We report on an efficient diode-pumped continuous-wave erbium-doped monoclinic double tungstate laser. It is based on a 1 at. % (Er:KLuW) crystal cut along the optical indicatrix axis. The Er:KLuW microchip laser, diode pumped at 0.98 μm, generates 268 mW at 1.610 μm with a slope efficiency of 30%. The output is linearly polarized (), and the laser beam is nearly diffraction limited (). Spectroscopic properties of in KLuW are also presented. The stimulated-emission cross-section is at for . The microchip Er:KLuW laser outperforms the commercial Er,Yb:glass.
© 2018 Optical Society of America
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