Carbon Nanotubes as an Ultrafast Emitter with a Narrow Energy Spread at Optical Frequency

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Carbon Nanotubes as an Ultrafast Emitter with a Narrow Energy Spread at Optical Frequency. / Li, Chi; Zhou, Joseph Xu; Zhai, Feng; Li, Zhenjun; Yao, Fengrui; Qiao, Ruixi; Chen, Ke; Cole, Matthew Thomas; Yu, Dapeng; Sun, Zhipei; Liu, Kaihui; Dai, Qing.

In: Advanced Materials, 11.08.2017.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Li, C, Zhou, JX, Zhai, F, Li, Z, Yao, F, Qiao, R, Chen, K, Cole, MT, Yu, D, Sun, Z, Liu, K & Dai, Q 2017, 'Carbon Nanotubes as an Ultrafast Emitter with a Narrow Energy Spread at Optical Frequency' Advanced Materials. https://doi.org/10.1002/adma.201701580

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Author

Li, Chi ; Zhou, Joseph Xu ; Zhai, Feng ; Li, Zhenjun ; Yao, Fengrui ; Qiao, Ruixi ; Chen, Ke ; Cole, Matthew Thomas ; Yu, Dapeng ; Sun, Zhipei ; Liu, Kaihui ; Dai, Qing. / Carbon Nanotubes as an Ultrafast Emitter with a Narrow Energy Spread at Optical Frequency. In: Advanced Materials. 2017.

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@article{f1f0ec82044d4ff7b19f968eb16dd37d,
title = "Carbon Nanotubes as an Ultrafast Emitter with a Narrow Energy Spread at Optical Frequency",
abstract = "Ultrafast electron pulses, combined with laser-pump and electron-probe technologies, allow ultrafast dynamics to be characterized in materials. However, the pursuit of simultaneous ultimate spatial and temporal resolution of microscopy and spectroscopy is largely subdued by the low monochromaticity of the electron pulses and their poor phase synchronization to the optical excitation pulses. Field-driven photoemission from metal tips provides high light-phase synchronization, but suffers large electron energy spreads (3-100 eV) as driven by a long wavelength laser (>800 nm). Here, ultrafast electron emission from carbon nanotubes (≈1 nm radius) excited by a 410 nm femtosecond laser is realized in the field-driven regime. In addition, the emitted electrons have great monochromaticity with energy spread as low as 0.25 eV. This great performance benefits from the extraordinarily high field enhancement and great stability of carbon nanotubes, superior to metal tips. The new nanotube-based ultrafast electron source opens exciting prospects for extending current characterization to sub-femtosecond temporal resolution as well as sub-nanometer spatial resolution.",
keywords = "Carbon nanotubes, Electron sources, Field-driven, Monochromatic, Ultrafast photoemission",
author = "Chi Li and Zhou, {Joseph Xu} and Feng Zhai and Zhenjun Li and Fengrui Yao and Ruixi Qiao and Ke Chen and Cole, {Matthew Thomas} and Dapeng Yu and Zhipei Sun and Kaihui Liu and Qing Dai",
year = "2017",
month = "8",
day = "11",
doi = "10.1002/adma.201701580",
language = "English",
journal = "Advanced Materials",
issn = "0935-9648",

}

RIS - Download

TY - JOUR

T1 - Carbon Nanotubes as an Ultrafast Emitter with a Narrow Energy Spread at Optical Frequency

AU - Li, Chi

AU - Zhou, Joseph Xu

AU - Zhai, Feng

AU - Li, Zhenjun

AU - Yao, Fengrui

AU - Qiao, Ruixi

AU - Chen, Ke

AU - Cole, Matthew Thomas

AU - Yu, Dapeng

AU - Sun, Zhipei

AU - Liu, Kaihui

AU - Dai, Qing

PY - 2017/8/11

Y1 - 2017/8/11

N2 - Ultrafast electron pulses, combined with laser-pump and electron-probe technologies, allow ultrafast dynamics to be characterized in materials. However, the pursuit of simultaneous ultimate spatial and temporal resolution of microscopy and spectroscopy is largely subdued by the low monochromaticity of the electron pulses and their poor phase synchronization to the optical excitation pulses. Field-driven photoemission from metal tips provides high light-phase synchronization, but suffers large electron energy spreads (3-100 eV) as driven by a long wavelength laser (>800 nm). Here, ultrafast electron emission from carbon nanotubes (≈1 nm radius) excited by a 410 nm femtosecond laser is realized in the field-driven regime. In addition, the emitted electrons have great monochromaticity with energy spread as low as 0.25 eV. This great performance benefits from the extraordinarily high field enhancement and great stability of carbon nanotubes, superior to metal tips. The new nanotube-based ultrafast electron source opens exciting prospects for extending current characterization to sub-femtosecond temporal resolution as well as sub-nanometer spatial resolution.

AB - Ultrafast electron pulses, combined with laser-pump and electron-probe technologies, allow ultrafast dynamics to be characterized in materials. However, the pursuit of simultaneous ultimate spatial and temporal resolution of microscopy and spectroscopy is largely subdued by the low monochromaticity of the electron pulses and their poor phase synchronization to the optical excitation pulses. Field-driven photoemission from metal tips provides high light-phase synchronization, but suffers large electron energy spreads (3-100 eV) as driven by a long wavelength laser (>800 nm). Here, ultrafast electron emission from carbon nanotubes (≈1 nm radius) excited by a 410 nm femtosecond laser is realized in the field-driven regime. In addition, the emitted electrons have great monochromaticity with energy spread as low as 0.25 eV. This great performance benefits from the extraordinarily high field enhancement and great stability of carbon nanotubes, superior to metal tips. The new nanotube-based ultrafast electron source opens exciting prospects for extending current characterization to sub-femtosecond temporal resolution as well as sub-nanometer spatial resolution.

KW - Carbon nanotubes

KW - Electron sources

KW - Field-driven

KW - Monochromatic

KW - Ultrafast photoemission

UR - http://www.scopus.com/inward/record.url?scp=85020194607&partnerID=8YFLogxK

U2 - 10.1002/adma.201701580

DO - 10.1002/adma.201701580

M3 - Article

JO - Advanced Materials

JF - Advanced Materials

SN - 0935-9648

M1 - 1701580

ER -

ID: 14470692