中国激光, 2001, 28 (7): 595, 网络出版: 2006-08-10  

熔融石英的热及电场诱导机理

Mechanism for Thermal/Electric-field Poling of Fused Silica
作者单位
东南大学电子工程系,南京 210096
摘要
详细分析了熔融石英样品经热及电场诱导后,建立二阶极化率的机理。该机理表明,二阶极化率是由样品耗尽区中偶极子的定向和三阶极化率经强静电场作用共同形成的。在一般条件下诱导,前者是主要因素;在较高电压诱导时,后者是主要因素。推导了二阶极化率的表达式,并进行了数值计算。数值结果表明,在一般情况下,χ33(2)约1pm/V,χ33(2):χ31(2)约为3。理论证明提高诱导的外加电压和选用Na和OH杂质浓度较大的石英材料能提高二阶极化率。
Abstract
The mechanism of the second order susceptibility created in the fused silica by thermal/electric field poling is analyzed in detail in this paper. It shows that the second order susceptibility is established by both the orientations of dipoles and third order susceptibility activated by strong static electric field in the depletion region of the sample. Under the ordinary poling condition the former is the main factor, whereas if with the greater poling voltage the latter is the key factor. The expressions for calculating second order susceptibility are deduced, and the numerical calculation is performed. The simulation results show, under the ordinary situation, χ33(2) and χ33(2):χ31(2) are about 1 pm/V and 3, respectively, which are quite consistent with the experimental reports. The theory proves that second order susceptibility can be increased by improving the applied voltage and choosing the silica material with the greater concentration of Na and OH impurity.

刘雪明, 孙小菡, 张明德. 熔融石英的热及电场诱导机理[J]. 中国激光, 2001, 28(7): 595. 刘雪明, 孙小菡, 张明德. Mechanism for Thermal/Electric-field Poling of Fused Silica[J]. Chinese Journal of Lasers, 2001, 28(7): 595.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!