Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5403560 | Journal of Luminescence | 2008 | 4 Pages |
Abstract
Erbium (Er)-doped fluoride crystals (YLF, BYF, CaF2, etc.) are well-known as active media for solid-state lasers emitting in IR and VIS spectral domains, and as materials for efficient near-IR to VIS upconversion. In this paper, we report on the study of conversion of IR light from an â¼1.5 μm spectral region to an â¼1 μm spectral domain in low-phonon RE-doped fluoride crystals CaF2 (RE=Er3+ Yb3+). Energy transfer processes taking place at selective pulsed and CW laser excitation are investigated experimentally. It is shown that in the CaF2:RE crystals efficient conversion of IR radiation from the â¼1.5 μm region to the â¼1 μm region occurs, and these crystals are perspective for using in spectral converters for enhancing solar cell efficiency.
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Authors
S. Ivanova, F. Pellé, A. Tkachuk, M.-F. Joubert, Y. Guyot, V.P. Gapontzev,