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Proceedings Paper

Investigation of temperature dependence of quantum efficiency and parasitic absorption in rare-earth doped crystals (Conference Presentation)

Paper Abstract

Optical refrigeration of rare-earth doped crystals has exceptional qualities that can be used for building a compact and vibration-free all-solid-state optical cooler. Estimating the lowest achievable temperature and cooling power of such a device requires accurate measurements of external quantum efficiency, mean fluorescence wavelength, and parasitic absorption. Here we discuss temperature dependent measurements of these parameters for a high quality Yb:YLF sample by performing a LITMoS test (Laser Induced Temperature Modulation Spectrum) combined with contact-free differential luminescence thermometry. These measurements are challenging at low temperatures, but by integrating these two methods, we can perform LITMoS test at any temperature.

Paper Details

Date Published: 14 March 2018
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Proc. SPIE 10550, Optical and Electronic Cooling of Solids III, 1055006 (14 March 2018); doi: 10.1117/12.2292265
Show Author Affiliations
Aram Gragossian, The Univ. of New Mexico (United States)
Azzurra Volpi, Univ. di Pisa (United States)
Junwei Meng, The Univ. of New Mexico (United States)
Alexander R. Albrecht, The Univ. of New Mexico (United States)
Saeid Rostami, The Univ. of New Mexico (United States)
Markus P. Hehlen, Los Alamos National Lab. (United States)
Mansoor Sheik-Bahae, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 10550:
Optical and Electronic Cooling of Solids III
Richard I. Epstein; Denis V. Seletskiy; Mansoor Sheik-Bahae, Editor(s)

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