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Proceedings Paper

Crystal growth and characterization of Yb3+-doped LiLuF4 for radiation-balanced lasers (Conference Presentation)
Author(s): Azzurra Volpi; Daniel Biner; Karl W. Krämer; Alexander R. Albrecht; Mansoor Sheik-Bahae; Markus P. Hehlen

Paper Abstract

We report on the Bridgman crystal growth of Yb3+-doped LiLuF4 (LLF:Yb) for radiation balanced laser (RBL) applications. Crystals were grown on both radio-frequency (RF) heated and resistively heated furnaces starting from the binary fluorides LiF, LuF3, and YbF3. Graphite crucibles were found to introduce excessive amounts of carbon contamination, while glassy carbon crucibles offered significantly better results. In a preliminary experiment, a LLF:Yb crystal grown by this method showed laser-induced cooling when excited at 1055 nm with 810 mW in a setup with the crystal in air and measuring the temperature change by a thermal camera.

Paper Details

Date Published: 17 March 2020
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Proc. SPIE 11298, Photonic Heat Engines: Science and Applications II, 112980A (17 March 2020); doi: 10.1117/12.2543608
Show Author Affiliations
Azzurra Volpi, The Univ. of New Mexico (United States)
Daniel Biner, Univ. Bern (Switzerland)
Karl W. Krämer, Univ. Bern (Switzerland)
Alexander R. Albrecht, The Univ. of New Mexico (United States)
Mansoor Sheik-Bahae, The Univ. of New Mexico (United States)
Markus P. Hehlen, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 11298:
Photonic Heat Engines: Science and Applications II
Denis V. Seletskiy; Richard I. Epstein; Mansoor Sheik-Bahae, Editor(s)

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