Effect of poling temperature on optical second harmonic intensity of sodium zinc tellurite glasses
Effect of poling temperature on optical second harmonic intensity of sodium zinc tellurite glasses
复制标题
极化温度对亚碲锌钠玻璃光学二次谐波强度的影响
DOI：
10.1063/1.367154
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发表时间：
1998
影响因子：
3.2
通讯作者：
N. Soga
中科院分区：
文献类型：
--
作者：
A. Narazaki;Katsuhisa Tanaka;K. Hirao;N. Soga
本文研究了Na_2 O-ZnO-TeO_2玻璃的光学二次谐波强度与极化温度的关系。所有的玻璃表现出这样的趋势，即二次谐波强度增加，经历一个最大值，并随着极化温度的增加而降低。极化温度引起的最大二次谐波强度，我们称之为最佳极化温度，与玻璃化转变温度相关，它们之间存在线性关系。这一现象表明，在玻璃化转变温度附近，玻璃网络结构的变化影响了长程有序电偶极子的取向，从而导致二次谐波的产生。我们认为，一些电化学反应发生在玻璃的阳极侧表面上的玻璃在玻璃化转变温度附近的粘性流动是允许的，并扰乱电偶极子的取向。
Poling temperature dependence of optical second harmonic intensity has been examined for Na2O–ZnO–TeO2 glasses. All the glasses exhibit such a tendency that the second harmonic intensity increases, experiences a maximum, and decreases as the poling temperature increases. The poling temperature giving rise to the maximum second harmonic intensity, which we call an optimum poling temperature, correlates with glass transition temperature; there exists a linear relation between them. This phenomenon indicates that the structural change of glass network near the glass transition temperature affects the orientation of electric dipoles with a long range order which induces the second harmonic generation. We suggest that some electrochemical reactions take place on the anode-side surface of glass at around the glass transition temperature where viscous flow is allowed and disturb the orientation of electric dipoles.