二维材料高次谐波及光波电子学  

High harmonic generation and lightwave electronics in two-dimensional materials

作　　者：刘灿东[1] 曾志男[1] 李儒新[1] LIU Can-Dong;ZENG Zhi-Nan;LI Ru-Xin(Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《物理》2021年第11期725-731,共7页Physics

基　　金：国家自然科学基金(批准号:61690223,61521093,11127901,11574332,11774363);中国科学院战略先导科技专项(B类)(批准号:XDB16)资助项目。

摘　　要：超短超强激光驱动固体介质产生高次谐波辐射受到了人们越来越多的关注。固体高次谐波产生于亚光周期电子运动,它提供了在极短时间尺度上研究光与固体材料高阶非线性相互作用的全新视角。与原子分子相比,组成固体材料的原子晶格具有平移对称性,因此固体高次谐波会呈现出特有的规律。相较于块体材料,二维材料独特的电光特性可以为高次谐波产生带来全新的特点,文章重点介绍几种二维材料高次谐波及其在光波电子学方面的研究进展。High harmonic generation(HHG)from solids driven by ultra-short and ultraintense laser pulses is attracting more and more attention.Arising from the sub-optical-cycle electron motion,this HHG provides a new perspective for studying high-order nonlinear interactions between light and solids on a very short time scale.Compared with atoms and molecules,the lattice structure of solids possesses translation symmetry,so that HHG from solids will exhibit unique properties.In contrast to bulk media,the distinct electro-optical properties in two-dimensional(2D)materials can give rise to new high harmonic spectral characteristics.This paper summarizes recent studies on HHG from several typical 2D materials and in lightwave electronics.

关 键 词：强激光场 固体高次谐波 阿秒 

分 类 号：TN24[电子电信—物理电子学] TB34[一般工业技术—材料科学与工程]