Measurements of optical refrigeration in ytterbium-doped crystals

被引：90

作者：

Epstein, RI ^{[1
]}

Brown, JJ ^{[1
]}

Edwards, BC ^{[1
]}

Gibbs, A ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2001年 / 90卷 / 09期

关键词：

D O I：

10.1063/1.1406544

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We measured anti-Stokes fluorescence cooling (optical refrigeration) in ytterbium-doped yttrium aluminum garnet (YAG). Pumping the 2.3% Yb3+:YAG crystal with 1.8 W of 1030 nm laser light produced a temperature drop of 8.9 degreesC from room temperature. The high thermal conductivity and ruggedness of this crystal make it an attractive material for use in optical refrigerators. Our spectral studies show that pure crystals of this material could be efficient for optical refrigeration at temperatures above similar to 100 K. Photothermal deflection measurements show that our current crystals can cool at similar to 250 K. Additionally, we measured optical refrigeration in a 5% Yb3+:Y2SiO5 crystal when pumped at 1050 nm. (C) 2001 American Institute of Physics.

引用

页码：4815 / 4819

页数：5

共 13 条

[1] New materials for optical cooling [J].