Theoretical analysis of thermal/electric-filed poling silica glass  

作　　者：刘雪明 郑小平 郭奕理 张汉一 李艳和 

出　　处：《Science China(Technological Sciences)》2002年第6期646-653,共8页中国科学（技术科学英文版）

摘　　要：Based on the experimental results, three basic conclusions are summarized for the thermal/electric-field poling (TEFP) silica materials, with which the second-order nonlinear optical coefficient in the bulk silica glass after TEFP is calculated, and relationships between the coefficient and the applied voltage V 0 in the poling process and the thickness of the nonlinear layer created from the poling are obtained. Theoretical results show that the second-order susceptibility χ(2) and the second-harmonic efficiency η in the poled bulk glass are proportional to √V 0 and V 0 2 , respectively; χ(2)～0.2?1.6 pm/V for the bulk glass after the typical TEFP; χ(2) decreases with an increase in the poling time after the TEFP silica glass approximately reaches the steady state. Theoretical results are well consistent with the experimental reports.

关 键 词：silica  SECOND-ORDER nonlinearity  thermal/electric-field poling  carrier. 

分 类 号：TQ171[化学工程—玻璃工业]