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Stimulated optical pumping in a Tm3+:YAG crystal

Gorju, Guillaume and Louchet, Anne and Paboeuf, David and Bretenaker, Fabien and Goldfarb, Fabienne and Chanelière, Thierry and Lorgeré, Ivan and Le Gouët, Jean-Louis and Guillot-Noël, Olivier and Goldner, Philippe (2007) Stimulated optical pumping in a Tm3+:YAG crystal. Journal of Physics: Condensed Matter, 19 (38). ISSN 0953-8984

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The possibility of using stimulated emission to improve the optical pumping of Tm3+ ions embedded in Tm3+:YAG to the 3F4 level is explored. The oscillator strengths and the frequencies of the transitions between the ground crystal field level of 3H4 to the different crystal field levels of 3F4 are measured at low temperature. Stimulated emission measurements at 1461 nm are performed to evaluate the optical pumping efficiency. Application to the spectral tailoring of Tm3+:YAG for quantum information applications is discussed.