Soviet Journal of Quantum Electronics

Spectral characteristics of the thulium ion and cascade generation of stimulated radiation in a YAlO3:Tu3+:Cr3+crystal

A O Ivanov, I. V. Mochalov, Alexandra M. Tkachuk, V A Fedorov, P. P. Feofilov

Published Jan 31, 1975• 11 citations

Abstract

Stimulated emission was obtained from Tu 3+ ions in YAlO 3 crystals doped with 1.0 at. % Tu and 0.1 at. % Cr. The stimulated radiation was generated by the 3 F 4 → 3 H 5 (λ 1 )→ 3 H 5 → 3 H 6 (λ 2 ) cascade at wavelengths λ 1 = 2.34 μ and λ 1 =1.93 μ and the threshold was 3.5 J/cm at 90 °K. A scheme of radiative and nonradiative transitions between the terms was constructed. The absorption and luminescence spectra recorded at 4.2 °K were used to derive the Stark splitting scheme of the 3 H 4 and 3 H 6 terms of the thulium ion.

DOI: 10.1070/qe1975v005n01abeh010826

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