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Spectroscopy of tetragonal Eu:NaGd(WO4)(2) crystal

Authors :: Universitat Rovira i Virgili
Loiko, P. A.; Vilejshikova, E. V.; Mateos, X.; Serres, J. M.; Dashkevich, V. I.; Orlovich, V. A.; Yasukevich, A. S.; Kuleshov, N. V.; Yumashev, K. V.; Grigoriev, S. V.; Vatnik, S. M.; Bagaev, S. N.; Pavlyuk, A. A.
Universitat Rovira i Virgili
Loiko, P. A.; Vilejshikova, E. V.; Mateos, X.; Serres, J. M.; Dashkevich, V. I.; Orlovich, V. A.; Yasukevich, A. S.; Kuleshov, N. V.; Yumashev, K. V.; Grigoriev, S. V.; Vatnik, S. M.; Bagaev, S. N.; Pavlyuk, A. A.
Source :: Optical Materials; 10.1016/j.optmat.2016.04.003; Optical Materials. 57 1-7
Publication Year :: 2016
Abstract: We report on growth and detailed spectroscopic study of Eu3+-doped tetragonal sodium gadolinium double tungstate, Eu:NaGd(WO4)(2), a new promising crystal for deep-red lasers. Large-volume crystal doped with 4.9 at.% Eu is grown by Czochralski method along the [001] crystallographic direction. Absorption of Eu3+ ions is studied at room temperature (RT) and at 6 K. For the absorption band related to the F-7(1) -> D-5(1) transition suitable for pumping of Eu:NaGd(WO4)(2), the maximum cross-section is sigma(abs) = 1.2 x 10(-21) cm(2) at 535.5 nm with the full width at half maximum (FWHM) of 3.1 nm (at RT, for E parallel to a polarization). For the D-5(0) -> F-7(4) transition, the maximum stimulated-emission cross-section is sigma(SE) = 1.6 x 10(-21) cm(2) at 698.3 nm (RT, E parallel to c polarization). Lifetime of the D-5(0) state is 490 +/- 10 mu s (at RT). Under UV excitation, Eu:NaGd(WO4)(2) provides intense red emission with CIE coordinates (x = 0.671, y = 0329). (C) 2016 Elsevier B.V. All rights reserved.

Details

Database :: OAIster
Journal :: Optical Materials; 10.1016/j.optmat.2016.04.003; Optical Materials. 57 1-7
Publication Type :: Electronic Resource
Accession number :: edsoai.on1443598510
Document Type :: Electronic Resource