Laser-induced internal cooling of Yb3+-doped fluoride-based glasses

被引：12

作者：

Fernández, J

Mendioroz, A

García, AJ

Balda, R

Adam, JL

机构：

[1] ETSII & Telecom, Dept Fis Aplicada 1, Bilbao 48013, Spain

[2] ETSII & Telecom, EHU, UPV, Ctr Mixto CSIC, Bilbao 48013, Spain

[3] Univ Rennes 1, CNRS, UMR 6512, Lab Verres & Ceram, F-35042 Rennes, France

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 323卷

关键词：

amorphous materials; electron-phonon interactions; optical properties; phonons; luminescence;

D O I：

10.1016/S0925-8388(01)01051-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Laser-induced internal cooling between room temperature and 77 K in a new fluorochloride glass (CNBZn) and a fluoride glass (BIG) doped with 1 mol% of YbF3 has been demonstrated by using collinear photothermal deflection and conventional laser excitation spectroscopies under high photon irradiances. The cooling efficiency for CNBZn glass which is similar to2.0% relative to the absorbed laser power at 1010 nm and 300 K falls about 20% at 77 K. The cooling efficiency for BIG glass was only similar to0.6% at room temperature. The experimental results are in good agreement with the predictions of a model based on the hypothesis of a second order process for the cooling mechanism. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：239 / 244

页数：6

共 18 条

[1] Lasers without internal heat generation [J].