1.48 and 1.84 μm thulium emissions in monoclinic KGd(WO4)2 single crystals
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چکیده
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منابع مشابه
1.84 m emission of Tm3+ sensitized by Yb3+ ions in monoclinic KGd„WO4...2 single crystals
By exciting at 940 nm, we have characterized the 1.84 m near infrared emission of trivalent thulium ions in Yb3+, Tm3+:KGd WO4 2 single crystals as a function of the dopant concentration and temperature, from 10 K to room temperature. An overall H6 Stark splitting of 470 cm −1 for the Tm3+ ions in the Yb3+, Tm3+:KGd WO4 2 was obtained. We also studied the blue emission at 476 nm Tm3+ and the ne...
متن کاملContinuous-wave and Q-switched Tm-doped KY(WO4)2 planar waveguide laser at 1.84 µm.
High-quality monoclinic planar waveguide crystals of Tm-doped KY(WO4)2 codoped with Gd3+ and Lu3+ were grown by liquid-phase epitaxy. For the first time, planar waveguide lasing was demonstrated in a monolithic cavity in the 2 µm spectral range. The laser was operated in the Q-switched mode using a Cr2+:ZnSe crystal as saturable absorber and in the continuous-wave regimes. The Q-switched planar...
متن کاملA 35 : Impurity - doped Micro - lasers
Rare-earth-ion-doped monoclinic potassium double tungstates KY(WO4)2, KGd(WO4)2, and KLu(WO4)2 are excellent host materials for solid-state lasers [1]. High-quality KY(WO4)2 optical waveguides were grown and laser operation was demonstrated for the first time [2]. Co-doping a KY(WO4)2 layer with Gd 3+ and Lu 3+ ions allows for lattice-matched layers with increased refractive index contrast with...
متن کاملStudy on Formation Mechanism of Defects in Monoclinic KLu(WO4)2 Crystals
The laser host crystals of KLu(WO4)2(KLuW) with large sizes up to 43 × 35 × 16 mm have been grown along [111] , [110], b, and c crystallographic directions, respectively, by the top-seeded solution growth (TSSG) slow-cooling method. The macro defects are observed using optical microscopy. The main defects found were cracks, inclusions, growth striations, sector boundaries and twin boundaries. T...
متن کاملThulium channel waveguide laser with 70% slope efficiency in a monoclinic double tungstate
Laser experiments on 1.5at.%, 5at.%, and 8at.% thulium-gadolinium-lutetium-yttrium co-doped, buried, ridgetype channel waveguides in a monoclinic potassium double tungstate demonstrate a maximum slope efficiency of 70% and output powers of 300 mW at ~1.9 μm. Keywords-component; thulium; monoclinic double tungstates; channel waveguide; infrared lasers
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