NON-RESONANT-TYPE-3RD-ORDER OPTICAL NONLINEARITY OF ALKALI SILICATE AND ALKALI ALUMINOSILICATE GLASSES - CONTRIBUTION OF INDIVIDUAL CHEMICAL-SPECIES IN THE GLASSES TO CHI((3))

被引:32
作者
NASU, H
SUGIMOTO, O
MATSUOKA, J
KAMIYA, K
机构
[1] Department of Chemistry for Materials, Faculty of Engineering, Mie University, Tsu
关键词
D O I
10.1016/0022-3093(94)00530-3
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The dependence of the non-linearity on the composition of alkali silicate and alkali aluminosilicate glasses was explored to investigate the contribution of bridging, non-bridging oxygens and alkali ions to third-order optical non-linearity. The glasses were prepared by the conventional melting and quenching technique, and composition ranges were x = 15-33 mol% for xR(2)O .(100 - x)SiO2 glasses (R: Na, K and Rb) and y = 10-30 mol% for 30R(2)O . yAlO(0.5).(70 - y)SiO2 glasses. From the hyperpolarizability, alpha((3)), calculated from third-order optical non-linear susceptibility, X((3)), the larger contribution of non-bridging oxygens (0.60 X 10(-35) esu cm(3)/ion) compared with bridging ones (0.43 X 10(-35) esu cm(3)/ion) was revealed. The influence of large polarizable alkali ions is 1-3.7 times larger than that of the non-bridging oxygens.
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页码:321 / 327
页数:7
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