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APS » Journals » Phys. Rev. Lett. » Volume 97 » Issue 3
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Phys. Rev. Lett. 97, 033001 (2006) [4 pages]

Anti-Stokes Laser Cooling in Bulk Erbium-Doped Materials

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Joaquin Fernandez1,2,*, Angel J. Garcia-Adeva1, and Rolindes Balda1,2
1Departamento de Fisica Aplicada I, E.T.S. Ingenieria de Bilbao, Alda. Urquijo s/n, 48013 Bilbao, Spain
2Unidad Fisica de Materiales CSIC-UPV/EHU and Donostia International Physics Center, Apartado 1072, 20080 San Sebastian, Spain

Received 5 May 2006; published 18 July 2006

See accompanying Physics Focus

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.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.97.033001
DOI:
10.1103/PhysRevLett.97.033001
PACS:
32.80.Pj, 42.55.Rz, 44.40.+a, 78.55.−m

*Electronic address: wupferoj@bi.ehu.es

 
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