Spectroscopic properties of a Tm3+:Bi2TeO5 single crystal by G. Dominiak-Dzik, W. Ryba-Romanowski, R. Lisiecki, and I. Földvári

Crystal Research and Technology

Cryst. Res. Technol. 42, 1335 (2007) - Abstract -

Spectroscopic properties of a Tm³⁺:Bi₂TeO₅ single crystal

G. Dominiak-Dzik, W. Ryba-Romanowski, R. Lisiecki, and I. Földvári*

Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-950 Wroclaw, Poland
*Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33, Budapest H-1121, Hungary

Keywords	bismuth tellurite crystal, thulium ion, absorption, luminescence, lifetimes
PACS	08.15.BH
DOI	10.1002/crat.200711028

Single crystal of bismuth tellurite Bi₂TeO₅ (BTO) doped with trivalent thulium (Tm³⁺) was grown by the Czochralski method and investigated by spectroscopic techniques (absorption, emission). Absorption and emission of the Tm:BTO crystal collected in the VIS-IR spectral range are presented. Spectroscopic features were investigated as a function of the excitation light polarisation (E//X, Y, and Z axis of optical indicatrix) and sample temperature. The oscillator strength of the ³H₆ -> ³F₄ transition at 1.7 μm was determined by numerical integration of the X, Y and Z polarised absorption spectra.

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