期刊
INFRARED PHYSICS & TECHNOLOGY
卷 58, 期 -, 页码 1-4出版社
ELSEVIER
DOI: 10.1016/j.infrared.2012.12.038
关键词
Optical material; Chalcogenide glass; Optical properties
资金
- Natural Science Foundation of China [60878042, 61111130197, 60908032, 60978058]
- Natural Science Foundation of Ningbo [2010A610171]
- Scientific Research Fund of Zhejiang Provincial Education Department [20070964]
- Scientific Research Foundation of Graduate School of Ningbo University
- K. C. Wong Magna Fund in Ningbo University
The development of far infrared optical devices requires optical materials transmitting light far beyond 20 pm. In this paper, two series of far-IR transmitting glasses including Ge-Te-Ga-Al and Ge-Te-Ga-AlCl3 were synthesized by melting-quenching method. Their thermal stability and IR transmitting property were investigated too. These glasses have wide infrared transmission region from 1.8 to 20 mu m, and the absorption peak of oxide in the 15-20 mu m region disappeared in the Fourier-transform infrared (FTIR) spectra when Al or AlCl3 was added into the Ge-Te-Ga system. The Ge-Te-Ga-Al glass samples show good thermal stability and high resistance to crystallization. Among these glasses, the (Ge0.15Te0.75Ga0.1)(94)Al-6 glass has the highest glass transition temperature T-g (196.3 degrees C), and the Ge15Te75Ga6Al4 glass has the largest Delta T (126.2 degrees C). In addition, the Delta T values of the Ge-Te-Ga-AlCl3 glass samples are all over 100 degrees C and have small fluctuation, which are acceptable for practical application. (C) 2012 Elsevier B.V. All rights reserved.
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