Judd–Ofelt analysis of spectroscopic properties of Eu3+:KLu(WO4)2 crystal

• Published in: Journal of luminescence Vol. 168; pp. 102 - 108
• Main Authors: Loiko, P.A., Dashkevich, V.I., Bagaev, S.N., Orlovich, V.A., Mateos, X., Serres, J.M., Vilejshikova, E.V., Yasukevich, A.S., Yumashev, K.V., Kuleshov, N.V., Dunina, E.B., Kornienko, A.A., Vatnik, S.M., Pavlyuk, A.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2015
• Subjects: Double tungstates; Judd–Ofelt analysis; Stimulated emission; Trivalent europium; Judd–Ofelt analysis; Trivalent europium; Stimulated emission; Double tungstates
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2015.07.045

We report on a comprehensive spectroscopic study of monoclinic Eu:KLu(WO4)2 crystal concerning its potential applications in red lasers. Optical absorption and stimulated-emission cross-section spectra are determined for this crystal for the principal light polarizations, E || Np, Nm and Ng. The maximum σSE corresponding to the 5D0→7F4 transition is 1.78×10−20cm2 at 703.5nm (for E || Nm). Spectroscopic properties of Eu:KLu(WO4)2 are modeled within the conventional Judd–Ofelt theory, as well as its modification for systems with an anomalously strong configuration interaction (ASCI), yielding absorption oscillator strengths, luminescence branching ratios for 5DJ→7FJ' transitions and radiative lifetimes of the 5DJ states. Photoluminescent properties of Eu:KLu(WO4)2 are studied under UV/visible excitation. Polarized Raman spectra are measured for Eu:KLu(WO4)2. •Top-seeded solution growth of Eu:KLu(WO4)2 monoclinic crystal.•Modeling of spectroscopic parameters with modified Judd–Ofelt theory.•Polarization-resolved absorption and stimulated-emission cross-section spectra.•Maximum stimulated-emission cross-section is 1.78×10−20cm2 at 703.5nm.•Polarized Raman spectroscopy of Eu:KLu(WO4)2 crystal.