Extreme nonlinear strong-field photoemission from carbon nanotubes

Chi Li, Ke Chen, Mengxue Guan, Xiaowei Wang, Xu Zhou, Feng Zhai, Jiayu Dai, Zhenjun Li, Zhipei Sun, Sheng Meng, Kaihui Liu, Qing Dai*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
40 Downloads (Pure)

Abstract

Strong-field photoemission produces attosecond (10−18 s) electron pulses that are synchronized to the waveform of the incident light. This nonlinear photoemission lies at the heart of current attosecond technologies. Here we report a new nonlinear photoemission behaviour—the nonlinearity in strong-field regime sharply increases (approaching 40th power-law scaling), making use of sub-nanometric carbon nanotubes and 800 nm pulses. As a result, the carrier-envelope phase sensitive photoemission current shows a greatly improved modulation depth of up to 100% (with a total modulation current up to 2 nA). The calculations reveal that the behaviour is an interplay of valence band optical-field emission with charge interaction, and the nonlinear dynamics can be tunable by changing the bandgap of carbon nanotubes. The extreme nonlinear photoemission offers a new means of producing extreme temporal-spatial resolved electron pulses, and provides a new design philosophy for attosecond electronics and photonics.

Original languageEnglish
Article number4891
JournalNature Communications
Volume10
Issue number1
DOIs
Publication statusPublished - 1 Dec 2019
MoE publication typeA1 Journal article-refereed

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    Pyymaki Perros, A., Rajamanickam, R., Sun, Z., Hedberg, D., Lau Kuen Yao, L., Kim, M. & Dai, Y.

    01/01/201931/05/2021

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    Cite this

    Li, C., Chen, K., Guan, M., Wang, X., Zhou, X., Zhai, F., ... Dai, Q. (2019). Extreme nonlinear strong-field photoemission from carbon nanotubes. Nature Communications, 10(1), [4891]. https://doi.org/10.1038/s41467-019-12797-z