Manipulation of ferroelectric domain inversion and growth by optically induced 3D thermoelectric field in lithium niobate
摘要
Weexperimentallydemonstratetheuseofafemtosecondlaser-inducedthermoelectricfieldtomanipulateremotely—notonlyatthefocalspot—theinversionandgrowthofferroelectricdomaininlithiumniobate.Theprocessinvolvestwosteps:thefirststepislasermarking,in whichalaserisusedtomarktheoriginofthedesireddomaininversion.Thesecondstepislaserinduction,inwhichalaser-inducedthermo-electricfieldisusedtoinvertthedomainatthemarkersiteanddrivedomaingrowth.Theinducedthermoelectricfieldisdistributedinthreedimensions,whichcansimultaneouslymanipulatethedomaininversionandgrowthlengthofmultiplemarkedsiteswithinadiameteroflm.Thelengthofdomaingrowthissynergisticallycontrolledbythepositionandintensityofmarkingandinduction,whichcan 200 exceed100 l m.Thistwo-steppolingmethodgreatlyimprovestheefficiencyofall-opticalpolingandprovidesadifferentsuiteoftoolsfortai-loringferroelectricdomains.
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Applied Physics Letters
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教授
教授、博导，泰山学者青年专家、崂山学者、学科带头人及武汉大学兼职教授。先后任职于北京理工大学、南洋理工大学、武汉大学及青岛科技大学。他长期致力于超快激光与物质相互作用研究，提出基于共振吸收的飞秒激光高效选择性加工新方法，成功应用于光子晶体加工、油水分离器制造等领域，展现出极高的工业加工能力；同时，成功验证了飞秒激光海水制氢假设，为万亿美元级的大规模制氢工程化奠定了实验基础。其科研成果丰硕，在Nanoscale、APL等主流SCI期刊发表论文40余篇，总被引超1100次；获国家发明专利18项（多项正推进转化）。主持国自然面上项目、先导科技专项子课题等16项，并作为骨干参与多项国家重大科研计划。
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