准周期铁电光学超晶格多波长二次谐波的产生  

Brief Communications Multiwavelength Second Harmonic Generation in a Quasiperiodic Ferroelectric Optical Superlattics *…

作　　者：秦亦强[1] 王海峰[1] 祝世宁[1] 朱永元[1] 闵乃本[1] 

机构地区：[1]南京大学固体微结构物理国家重点实验室

出　　处：《物理》1997年第12期713-715,共3页Physics

基　　金：国家攀登计划

摘　　要：准周期材料的研究是凝聚态物理学的热门课题之一．我们利用外电场室温极化技术，成功地制备了准周期ＬｉＴａＯ３超晶格，首次获得了高效、多波长的二次谐波输出．对应的基波波长分别为０９７６２，１０８４６，１２８３４，１３６５０和１５６９９μｍ．Quasiperiodic materials research is an important development in condensed matter physics.Using the external field poling technique at room temperature,we have designed and fabricated a novel quasiperiodic nonlinear optical superlattice of LiTaO 3,obtaining for the first time high efficiency and multiwavelength quasi phase matched second harmonic output.The fundamental wavelength was tuned to 0 9762,1 0846,1 2834,1 3650 and 1 5699μm,respectively.

关 键 词：准周期材料 铁电超晶格 二次谐波 准晶体 

分 类 号：O753.3[理学—晶体学]