摘要
本文采用有限元方法分析外加电场法对铁电体进行周期极化时的电场分布,讨论尖端效应对极化的影响,比较两种不同的电极设计方案—梳形电极和框形电极的优劣。分析了多周期光栅同时极化时的电场分布,推断了大周期与小周期之间存在的竞争现象。本文最后对光刻造成周期电极的断条、毛刺工艺缺陷和液体电极方案的残留气泡缺陷进行了探讨。数值计算得出的结论比较圆满地解释了实验中的许多现象。
The electric field distribution of electric field periodic poling of ferroelectric is analyzed by finite element method in this paper. The impact of fringing field on poling progress is discussed in detail and a comparison between two approaches of electrode configuration, comb-like and frame-like, is made. The numerical analysis revealed a competing process of large period and small period area exhibited while simultaneously poling multiple period. Defects, such as broken strip and small protrusion occurring in the lithographically defined periodic electrode and residual bubble within electrolyte, are investigated, showing a great impact on the quality of poling. The numerical results achieved in this paper are useful for explaining some experimental phenomena.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2005年第5期805-811,共7页
Journal of Synthetic Crystals
基金
教育部科学技术研究重点资助项目(No.02042)
国家自然科学基金资助项目(No.60377018)
关键词
非线性光学
准相位匹配
铌酸锂
周期极化
外加电场法
有限元法
non-linear optics
quasi-phasematching
lithium niobate
periodic poling
electric field poling
finite element method
