摘要
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.
作者
Jiaqi Wu
Yinghui Zheng
Zhinan Zeng
Ruxin Li
吴家其;郑颖辉;曾志男;李儒新(School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;State Key Laboratory of High Field Laser Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)
基金
supported by the National Natural Science Foundation of China (Nos. 91950203,11874374,11574332,61690223,and 11774363)
the Strategic Priority Research Program of the Chinese Academy of Sciences(No. XDB16)
the Chinese Academy Sciences (CAS)Youth Innovation Promotion Association
