Author Affiliations
Abstract
1 School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
2 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
High-order harmonic generation originated from zigzag graphene nanoribbons (ZGNRs) induced by intense laser pulses is investigated theoretically. During the interaction between the intense mid-infrared laser and the ZGNR, we find that localized edge states mainly contribute to the generation of the low-order harmonics, while cutoff harmonics result from the other confined states. Our result shows that the edge-state effect of ZGNR with narrow width can enhance the conversion efficiency of low-order harmonics, rather than the higher-order harmonics extended to the cutoff region.
graphene nanoribbons high-order harmonic generation edge state Chinese Optics Letters
2020, 18(10): 103201
基于石墨烯纳米带阵列的共振效应,提出了三层石墨烯纳米带阵列结构,研究了该阵列参数对复合结构的多频滤波特性的影响规律。利用时域有限差分(FDTD)法,讨论了费米能级、石墨烯带宽占比、外界折射率对滤波频率的影响。研究结果表明,增加费米能级能使谐振频蓝移,增加石墨烯带宽占比和外界折射率均使谐振频率红移,费米能级改变0.1 eV时,谐振频率的改变量超过5 THz。
集成光学 石墨烯纳米带 多频滤波器 时域有限差分方法 表面等离子体 激光与光电子学进展
2019, 56(6): 061301
