Anti-Stokes laser cooling in Yb3+-doped KPb2Cl5 crystal

Joaquin R. Fernandez; A. Mendioroz; Rolindes Balda

doi:10.1117/12.513507

9 April 2003 Anti-Stokes laser cooling in Yb³⁺-doped KPb₂Cl₅ crystal

Joaquin R. Fernandez, A. Mendioroz, Rolindes Balda

Proceedings Volume 5131, Third GR-I International Conference on New Laser Technologies and Applications; (2003) https://doi.org/10.1117/12.513507
Event: Third GR-I International Conference on New Laser Technologies and Applications, 2003, San Diego, CA, United States

Abstract

We report internal laser cooling in Yb³⁺ doped KPb₂Cl₅ crystal. From the quantum efficiency values measured in the heating and cooling regions by using the photothermal deflection technique, we have obtained a room temperature cooling efficiency of 0.2% in a sample doped with about 5 x 10¹⁹ ions/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 the photon-ion-phonon interaction.

Citation Download Citation

Joaquin R. Fernandez, A. Mendioroz, and Rolindes Balda "Anti-Stokes laser cooling in Yb³⁺-doped KPb₂Cl₅ crystal", Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); https://doi.org/10.1117/12.513507

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