Abstract
The spectroscopic properties of Yb3+-doped ZBLANP, BIGaZYT and QX/Yb phosphate glasses are studied to evaluate their potential for laser-induced fluorescent cooling or optical refrigeration. The efficiency of optical refrigeration increases with pump wavelength in the anti-Stokes region. The cooling efficiencies of the three glasses as a function of temperature are evaluated at the wavelength λp corresponding to the absorption coefficient of 10−3 cm−1 For temperatures <110K, the cooling efficiency of the BIGaZYT glass may be more than twice that of the ZBLANP.
© 1998 Optical Society of America
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