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Periodically poled electrode, method of forming periodically poled structure, and periodic polarization inversion element

机译:周期性极化电极,周期性极化结构的形成方法以及周期性极化反转元件

摘要

PROBLEM TO BE SOLVED: To provide a periodic polarization reversal electrode, a forming method of periodic polarization reversal structure and a periodic polarization reversal element capable of forming a polarization reversal structure which has a uniform period in a ferroelectric crystal substrate.SOLUTION: The periodic polarization reversal electrode includes: a surface electrode having plural stripe-like reversal electrodes, which are disposed on +Z plane perpendicular to a polarization direction of the ferroelectric crystal substrate, and which are electrically connected to each other and periodically extend parallel to each other; and rear face electrodes which are disposed on a -Z plane of the ferroelectric crystal substrate opposite to the +Z plane, and which is divided into plural regions by a division region which extends at an angle relative to an extension direction of the reversal electrode as viewed form the +Z plane. A voltage is applied to the plural divided regions of the rear face electrode independently across the surface electrode; thereby the periodic polarization reversal structure is formed.
机译:解决的问题:为了提供一种周期性极化反转电极,一种周期性极化反转结构的形成方法以及一种能够在铁电晶体衬底中形成具有均匀周期的极化反转结构的周期性极化反转元件。反转电极包括:具有多个条状反转电极的表面电极,其布置在垂直于铁电晶体基板的极化方向的+ Z平面上,并且彼此电连接并且周期性地彼此平行地延伸;以及背面电极设置在铁电晶体基板的与+ Z平面相反的-Z平面上,并且通过相对于反转电极的延伸方向以一定角度延伸的分割区域被分割为多个区域。从+ Z平面查看。跨表面电极独立地将电压施加到背面电极的多个划分区域;从而形成周期性的极化反转结构。

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