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Proceedings Paper

Anti-Stokes laser cooling in erbium-doped low-phonon materials
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Paper Abstract

Here we report the first experimental evidences of anti-Stokes laser-induced cooling in two different low phonon erbium-doped matrices: a KPb2Cl5 crystal and a fluorochloride glass. The local cooling was detected by using a photothermal deflection technique whereas the bulk cooling was detected by means of a calibrated thermal sensitive camera. The Er3+ ion was excited in the 4I9/2 manifold. It is worthwhile to mention that the cooling was observed in the spectral region where some upconversion processes that initiate at the pumped level occur. Together with the spectroscopic characterization, a short discussion on the experimental and theoretical background of the cooling process including the possible influence of upconversion processes is presented.

Paper Details

Date Published: 15 March 2007
PDF: 11 pages
Proc. SPIE 6461, Laser Cooling of Solids, 646102 (15 March 2007); doi: 10.1117/12.706827
Show Author Affiliations
Angel J. Garcia-Adeva, Escuela Superior de Ingenieros (Spain)
Rolindes Balda, Escuela Superior de Ingenieros (Spain)
Univ. del Pais Vasco (Spain)
Donostia International Physics Ctr. (Spain)
Joaquin Fernández, Escuela Superior de Ingenieros (Spain)
Univ. del Pais Vasco (Spain)
Donostia International Physics Ctr. (Spain)


Published in SPIE Proceedings Vol. 6461:
Laser Cooling of Solids
Richard I. Epstein; Mansoor Sheik-Bahae, Editor(s)

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