Physics of the Solid State
Volume 47, Number 8, 1463-1466, DOI: 10.1134/1.2014491

Proceedings of the XII Feofilov Workshop “Spectroscopy of Crystals Activated by Rare-Earth and Transition-Metal Ions” (Yekaterinburg, Russia, September 22–25, 2004)

Spectroscopic indications of the possible optical cooling effect in fluoride crystals activated by Yb3+ and Tm3+ ions

L. A. Nurtdinova, V. V. Semashko, A. K. Naumov, R. Yu. Abdulsabirov and S. L. Korableva

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Abstract

The results of spectral kinetic studies of several fluoride crystals activated by Yb3+ and Tm3+ ions are presented, and their possible application as cooling elements of optical refrigerators is discussed. Optimum excitation conditions for the laser cooling effect in these crystals are found. The cooling efficiency is established to depend on the degree of order in the active medium.
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Translated from Fizika Tverdogo Tela, Vol. 47, No. 8, 2005, pp. 1409–1412.
Original Russian Text Copyright © 2005 by Nurtdinova, Semashko, Naumov, Abdulsabirov, Korableva.

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