Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5404203 | Journal of Luminescence | 2006 | 5 Pages |
Abstract
A new model on the mechanism of anti-Stokes fluorescent cooling is proposed, based on which incident laser induces a phonon-assisted energy transfer from one luminescent center to another in an optical medium and causes medium cooling when the energy transfer is an anti-Stokes process and absorbs phonons. Here, we develop the model in two cases: two-phonon-assisted energy transfer for a small energy mismatch and one-phonon-assisted energy transfer for a large energy mismatch. The dependence of relative cooling efficiency on photon energy and temperature is also discussed in evaluating the new mechanism.
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Physical and Theoretical Chemistry
Authors
Weiping Qin, Shihua Huang, Guotong Du, Jishen Zhang, Gejihu De, Jishuang Zhang, Yan Wang, Chunyan Cao, Shaoze Lu,