文献类型：期刊文献

英文题名：Nonlinear optical response in Kronig-Penney type graphene superlattice in terahertz regime

作者：Jiang, Lijuan[1,3];Yuan, Rui-Yang[2];Zhao, Xin[2];Lv, Jing[1];Yan, Hui[1]

第一作者：蒋利娟;Jiang, Lijuan

通讯作者：Yuan, RY[1]

机构：[1]Beijing Univ Technol, Lab Thin Film Mat, Beijing 100022, Peoples R China;[2]Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China;[3]Xinxiang Univ, Dept Phys & Elect Engn, Xinxiang 453003, Peoples R China

第一机构：Beijing Univ Technol, Lab Thin Film Mat, Beijing 100022, Peoples R China

通讯机构：[1]corresponding author), Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China.

年份：2015

卷号：29

期号：13

外文期刊名：MODERN PHYSICS LETTERS B

收录：;Scopus(收录号：2-s2.0-84929464196);WOS:【SCI-EXPANDED(收录号:WOS:000354765100004)】；

基金：This work is supported by the National Special Fund for the Development of Major Research Equipment and Instruments (project No. 2011YQ13001805), the Research Key Project of Science and Technology of Education Bureau of Henan Province, China (Grant No. 14A140030), and the Innovation Talants Program of Science and Technology of Institution of Higher Education of Henan Province, China (Grant No. 14HASTIT044).

语种：英文

外文关键词：Nonlinear; graphene superlattice; terahertz; conductance

摘要：The terahertz nonlinear optical response in Kronig-Penney (KP) type graphene superlattice is demonstrated. The single-, triple- and quintuple-frequencies of the fifth-order nonlinear responses are investigated for different frequencies and temperatures with the angle phi along the periodicity of the superlattice toward the external field tuning from 0 to pi/2. The results show that the fifth-order nonlinear optical conductance of graphene superlattice is enhanced in the terahertz regime when phi = 0, i.e. an external field is applied along the periodicity of the superlattice. The fifth-order nonlinear optical conductances at phi = 0 for different frequencies and temperatures are calculated. The results show that the nonlinear optical conductance is enhanced in low frequency and low temperature. Our results suggest that KP type graphene superlattices are preferred structures for developing graphene-based nonlinear photonics and optoelectronics devices.