Anti-Stokes laser cooling in Yb3+-doped KPb2 Cl5 crystal
Optics Letters, Vol. 27, Issue 17, pp. 1525-1527 (2002)
http://dx.doi.org/10.1364/OL.27.001525
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Abstract
We report internal laser cooling in Yb3+ -doped KPb2Cl5 . From the quantum efficiency values measured in the heating and cooling regions by use of the photothermal deflection technique, we have obtained a room-temperature cooling efficiency of 0.2% in a sample doped with ~5×1019ions/cm3 . Excitation spectra obtained under high irradiation fluences show an excess of fluorescence with regard to those obtained at low fluences, which agrees with the prediction of a model based on photon–ion–phonon interaction.
© 2002 Optical Society of America
[Optical Society of America ]
OCIS Codes
(140.3320) Lasers and laser optics : Laser cooling
(160.5690) Materials : Rare-earth-doped materials
(300.6430) Spectroscopy : Spectroscopy, photothermal
Citation
A. Mendioroz, J. Fernández, M. Voda, M. Al-Saleh, R. Balda, and A. J. García-Adeva, "Anti-Stokes laser cooling in Yb3+-doped KPb2 Cl5 crystal," Opt. Lett. 27, 1525-1527 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-17-1525
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