The helicity of Raman scattered light:principles and applications in two-dimensional materials  

作　　者：Yan Zhao Bo Xu Lianming Tong Jin Zhang 

机构地区：[1]Academy for Advanced Interdisciplinary Studies,Peking University,Beijing 100871,China [2]College of Chemistry and Molecular Engineering,Beijing Science and Engineering Center for Nanocarbons,Beijing National Laboratory for Molecular Sciences,Peking University,Beijing 100871,China

出　　处：《Science China Chemistry》2022年第2期269-283,共15页中国科学（化学英文版）

基　　金：supported by the Ministry of Science and Technology of China(2016YFA0200100,2018YFA0703502);the National Natural Science Foundation of China(52021006,51720105003,21790052,21974004);Beijing National Laboratory for Molecular Sciences(BNLMS-CXTD-202001);the Strategic Priority Research Program of Chinese Academy of Sciences(XDB36030100)。

摘　　要：Raman spectroscopy has been not only a technique for characterizing the composition and lattice structure of materials,but also a platform to explore the electron-photon and electron-phonon couplings.When excited by circularly polarized light,the Raman scattered light can carry a spin angular momentum±h,which adds a new degree of freedom to study the Raman scattering process.This review explains the principles of the helicity of Raman scattered light excited by circular polarization,and introduces the recent advances in the fundamentals and applications of helicity-resolved Raman scattering in two dimensional(2 D)materials,including the assignment of overlapped Raman modes,the characterization of exciton-phonon coupling and the application in chiral optics.We hope that this review will give a comprehensive understanding of the helicity selection rule in the Raman scattering process and inspire more exploration on the applications of the helicity of Raman scattered light.

关 键 词：Raman scattering HELICITY two-dimensional materials chiral phonon electron-phonon coupling 

分 类 号：TB34[一般工业技术—材料科学与工程] O657.37[理学—分析化学]