Laser-induced cooling of a Yb:YAG crystal in air at atmospheric pressure

被引：62
|
作者：
de Lima Filho, Elton Soares [1 ]
Nemova, Galina [1 ]
Loranger, Sebastien [1 ]
Kashyap, Raman [1 ,2 ]
机构：
[1] Ecole Polytech, Dept Engn Phys, Stn Ctr Ville, Montreal, PQ H3C 3A7, Canada
[2] Ecole Polytech, Dept Elect Engn, Stn Ctr Ville, Montreal, PQ H3C 3A7, Canada
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 21期
基金：
加拿大自然科学与工程研究理事会;
关键词：
OPTICAL REFRIGERATION; HEAT-GENERATION; FIBER; SEMICONDUCTOR; AMPLIFIER; YAG;
D O I：
10.1364/OE.21.024711
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report for the first time the experimental demonstration of optical cooling of a bulk crystal at atmospheric pressure. The use of a fiber Bragg grating (FBG) sensor to measure laser-induced cooling in real time is also demonstrated for the first time. A temperature drop of 8.8 K from the chamber temperature was observed in a Yb:YAG crystal in air when pumped with 4.2 W at 1029 nm. A background absorption of 2.9 x 10(-4) cm(-1) was estimated with a pump wavelength at 1550 nm. Simulations predict further cooling if the pump power is optimized for the sample's dimensions. (C)2013 Optical Society of America
引用
收藏
页码：24711 / 24720
页数：10
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