Anti-stokes laser cooling in bulk erbium-doped materials.
We report the first observation of anti-Stokes laser-induced cooling in the Er3+:KPb2Cl5 crystal and in the Er3+:CNBZn (CdF2-CdCl2-NaF-BaF2-BaCl2-ZnF2) glass. The internal cooling efficiencies have been calculated by using photothermal deflection spectroscopy. Thermal scans acquired with an infrared thermal camera proved the bulk cooling capability of the studied samples. The implications of these results are discussed.
Fernandez
Joaquin
J
Departamento de Fisica Aplicada I, E.T.S. Ingenieria de Bilbao, Alda. Urquijo s/n, 48013 Bilbao, Spain. wupferoj@bi.ehu.es
Garcia-Adeva
Angel J
AJ
Balda
Rolindes
R