飞秒激光直写诱导PMN-PT晶体表面LIPSS结构相变特性  

Phase transition properties of the LIPSS induced by femtosecond laser direct writing on PMN-PT crystal

作　　者：陈志翔 杨全鑫 刘洪亮 Chen Zhixiang;Yang Quanxin;Liu Hongliang(College of Electronic Information and Optical Engineering,Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology,Nankai University,Tianjin 300350,China;State Key Laboratory of Crystal Materials,Shandong University,Jinan,Shandong 250100,China)

机构地区：[1]南开大学电子信息与光学工程学院微尺度光学信息技术科学重点实验室,天津300350 [2]山东大学晶体材料国家重点实验室,山东济南250100

出　　处：《光电工程》2023年第3期191-199,共9页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(12274236)。

摘　　要：本文提出一种由飞秒激光直写技术诱导的基于弛豫铁电体PMN-PT晶体的表面周期结构(LIPSS),通过不同激光参数的改变,实现了LIPSS结构周期从750 nm到3μm的变化。最后,通过升高温度探究了LIPSS结构的相变特性。对比基底的相变特性,飞秒激光诱导的LIPSS结构的居里温度有明显的降低,这一特性将会为基于PMN-PT晶体的温控调制器的制备提供新思路。In this paper,we propose a femtosecond laser-induced surface periodic structure(LIPSS)based on relaxed ferroelectric PMN-PT crystals.By changing the applied laser parameters,the period of the LIPSS structure is varied from 750 nm to 3μm.Finally,the phase transition properties of the LIPSS structure are investigated by increasing the temperature.Compared to the phase transition properties of the substrate,the Curie temperature of the LIPSS structure is significantly reduced,and this will provide a possible new idea for the preparation of temperature-controlled modulators based on PMN-PT crystals.

关 键 词：飞秒激光直写 表面周期结构 PMN-PT晶体 相变 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]