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Conferences > ASSL > 2020 > ATh5A > ATh5A.2

Watt-Level Thulium Laser Operating on the 3H4 → 3 H5 Transition with ~70% Slope Efficiency

Pavel Loiko, Esrom Kifle, Lauren Guillemot, Jean-Louis Doualan, Florent Starecki, Alain Braud, Magdalena Aguiló, Francesc Díaz, Valentin Petrov, Xavier Mateos, and Patrice Camy

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Abstract

A Thulium laser operating on the 3H4→3H5 transition in high-phonon-energy KLu(WO4)2 generates 1.12 W at 2.22&2.29 μm with a record-high slope efficiency of 69.2% representing a two-for-one pump process through efficient energy-transfer upconversion.

© 2020 The Author(s)

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