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11 December 2019 Growth and investigation of optical properties and laser oscillations from ternary thiogallate crystals with laser active dopants
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Proceedings Volume 11322, XIV International Conference on Pulsed Lasers and Laser Applications; 113220Q (2019) https://doi.org/10.1117/12.2542947
Event: XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), 2019, Tomsk, Russian Federation
Abstract
A wide range of rare earth doped crystals used as a lasing media includes: Y3Al5O12 (YAG); Al2O3 (sapphire); chalcogenides of ZnS, ZnSe; sesquioxides of Y2O3, Sc2O3 and others. Ternary thiogallate compounds with common formula AIIB23C4 6 (where A is: Ca, Sr, Ba; B is: Ga, Al; C is- S, Se, Te) consider as a perspective class of chalcogenide semiconductors revealing bright luminescence and laser oscillation properties when doped with rare-earth elements (Eu2+, Nd3+ , Ce3+ etc). In the present research, optical properties and observed laser oscillation of transparent ternary chalcogenide crystals of CaGa2S4 and CaGa2Se4 grown by the chemical vapor transport reaction and doped with Eu2+ (1.0-5.0 a t%) are described. The first observation of laser oscillation from a single crystal CaGa2S4 : Eu2+ (1.0-5.0 at%) have been reported earlier, and for CaGa2Se4 : Eu2+ it is reported for the first time in the present article. The life time of the excited state 4f65d of Eu2+ ions in both crystals determined from the luminescence decay kinetics was ~3.8 μsec. It is shown that photoluminescence maximum in both crystals CaGa2S4 : Eu2+ and CaGa2Se4 : Eu2+ is due to the intra shell transition 4f65d – 4f7(8S7/2) ions.
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Arif M. Pashayev, Bahadur G. Tagiyev, Ogtay B. Tagiyev, Kerim R. Allahverdiyev, Ilkin T. Huseynov, and Ilham Z. Sadikhov "Growth and investigation of optical properties and laser oscillations from ternary thiogallate crystals with laser active dopants", Proc. SPIE 11322, XIV International Conference on Pulsed Lasers and Laser Applications, 113220Q (11 December 2019); https://doi.org/10.1117/12.2542947
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