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In this paper, a mirrorless Yb3+-doped KY1-x-yGdxLu y(WO4)2 waveguide laser with cw operation at 981.5 and 1001 nm, fabricated by liquid phase epitaxy and femtosecond laser microstructuring, is reported. A planar waveguide was fabricated by growing an Yb3+-doped KY1-x-yGdxLuy(WO4) 2 epitaxial layer by liquid phase epitaxy over a KY(WO4)2 substrate. This planar waveguide was then microstructured by...
Many crystalline laser hosts have been studied with Tm-Ho co-doping where the trivalent Tm ion serves as sensitizer (conveniently pumped near 800 nm by laser diodes) and the trivalent Ho ion, excited by energy transfer, lases on its 2-μνα 5Ι7→5Ι8 transition. Little attention has been paid so far, however, to the monoclinic double tungstate crystals although it is known that they exhibit maximum absorption...
Monoclinic double tungstate (DT) crystals, due to their maximum absorption and emission cross sections and minimum concentration quenching, seem ideal as hosts for thin-disk lasers with simplified geometry (number of pump passes). The first diode-pumped thulium thin-disk laser based on Tm:KY(WO4)2 generated CW output power of 4.9 W at 1950 nm using 4 pump passes [1]. The power handling capability...
We report on polarization switching in the Tm:KLu(WO4)2 laser between the Nm and Np states oscillating at different wavelengths. This switching strongly depends on the thermal management of the active medium.
We present the first cw Ho:KLuW laser operating at room temperature. It is resonantly pumped by a diode-pumped Tm:KLuW laser and emits at 2060 nm in E//Nm polarization with a slope efficiency of 22%.
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