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Published on: December 5, 2025
Anti-Stokes luminescence cooling of Tm3+ doped BaY2F8
Wendy Patterson1, Stefano Bigotta, Mansoor Sheik-Bahae
1Optical Science and Engineering Program, Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA.
Abstract:
We report laser-induced cooling with thulium-doped BaY2F8 single crystals grown using the Czochralski technique. The spectroscopic characterization of the crystals has been used to evaluate the laser cooling performance of the samples. Cooling by 3 degrees below ambient temperature is obtained in a single-pass geometry with 4.4 Watts of pump laser power at lambda = 1855 nm.
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