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It has been recognized that the monoclinic double tungstates KY(WO4)2, KGd(WO4)2, and KLu(WO4)2 possess a high potential as rare-earth-ion-doped solid-state laser materials, partly due to the high absorption and emission cross sections of rare-earth ions when doped into these materials. Besides, their high refractive indexes make these materials potentially suitable for applications that require optical...
Laser emission near 780 nm with 2 mW output power and 3.3% slope efficiency from a Ti:sapphire buried channel waveguide is demonstrated. The sample was fabricated by proton implantation.
First channel waveguide emission from Yb-doped KY(WO4)2 has been demonstrated. Two different methods have been used to fabricate micron-size active-guiding structures, namely reactive ion etching and ion implantation.
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