Chinese Optics Letters, Vol. 18, Issue 10, 103201 (2020)
High-order harmonic generation from zigzag graphene nanoribbons
Jiaqi Wu1,2, Yinghui Zheng2,*, Zhinan Zeng2,**, and Ruxin Li1,2
- 1School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- 2State 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.
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