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Title

Crystal growth, optical spectroscopy, and continuous-wave laser operation of co-doped (Ho,Tm):KLu(WO4)2 monoclinic crystals

AuthorsJambunathan, Venkatesan; Schmidt, Andreas; Mateos, Xavier; Pujol, María Cinta; Griebner, Uwe; Petrov, Valentín; Zaldo, Carlos CSIC ORCID; Aguiló, Magdalena; Díaz, Francesc
Keywords(250.5230) Photoluminescence
(140.5680) Rare earth and transition metal solid-state lasers
(140.3070) Infrared and far-infrared lasers
(300.0300) Spectroscopy
(300.1030) Absorption
Issue Date4-Jun-2014
PublisherOptical Society of America
CitationJournal of the Optical Society of America - B - Optical Physics 31(7): 1415-1421 (2014)
AbstractWe report on the crystal growth, optical spectroscopy, and room-temperature continuous-wave laser generation around 2 μm with co-doped (Ho,Tm):KLu(WO4)2 monoclinic crystals. Co-doped crystals at different doping levels were grown by the top-seeded solution growth slow-cooling method. We characterized the spectroscopy of Ho and Tm ions in KLuW in terms of polarized optical absorption, photoluminescence, and lifetime measurements. Continuous-wave laser operation at room-temperature at a wavelength of 2.06 μm was achieved with several crystals at different co-doping levels, establishing that the optimum doping ratio is 5.29 × 1019 at./cm3 for Ho and 3.10 × 1020 at./cm3 for Tm (0.5 at. %Ho, 5.0 at. %Tm:KLuW), reaching a maximum output power of 145 mW and a slope efficiency of 12.9%.
Publisher version (URL)https://doi.org/10.1364/JOSAB.31.001415
URIhttp://hdl.handle.net/10261/181113
DOI10.1364/JOSAB.31.001415
ISSN0740-3224
E-ISSN1520-8540
Appears in Collections:(ICMM) Artículos




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