High-energy electron emission from metallic nano-tips driven by intense single-cycle terahertz pulses
Abstract
Electrons ejected from atoms and subsequently driven to high energies in strong laser fields enable techniques from attosecond pulse generation to imaging with rescattered electrons. Analogous processes govern strong-field electron emission from nanostructures, where long wavelength radiation and large local field enhancements hold the promise for producing electrons with substantially higher energies, allowing for higher resolution time-resolved imaging. Here we report on the use of single-cycle terahertz pulses to drive electron emission from unbiased nano-tips. Energies exceeding 5 keV are observed, substantially greater than previously attained at higher drive frequencies. Despite large differences in the magnitude of the respective local fields, we find that the maximum electron energies are only weakly dependent on the tip radius, for 10 nm<1,000 nm. As a result, due to the single-cycle nature of the field, the high-energy electron emission is predicted to be confined to a single burst, potentially enabling a variety of applications.
- Authors:
-
- Univ. of Virginia, Charlottesville, VA (United States)
- Publication Date:
- Research Org.:
- Univ. of Virginia, Charlottesville, VA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1361204
- Grant/Contract Number:
- FG02-00ER15053; SC0012462
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 7; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 36 MATERIALS SCIENCE; applied physics; techniques and instrumentation; terahertz optics
Citation Formats
Li, Sha, and Jones, R. R. High-energy electron emission from metallic nano-tips driven by intense single-cycle terahertz pulses. United States: N. p., 2016.
Web. doi:10.1038/ncomms13405.
Li, Sha, & Jones, R. R. High-energy electron emission from metallic nano-tips driven by intense single-cycle terahertz pulses. United States. https://doi.org/10.1038/ncomms13405
Li, Sha, and Jones, R. R. Thu .
"High-energy electron emission from metallic nano-tips driven by intense single-cycle terahertz pulses". United States. https://doi.org/10.1038/ncomms13405. https://www.osti.gov/servlets/purl/1361204.
@article{osti_1361204,
title = {High-energy electron emission from metallic nano-tips driven by intense single-cycle terahertz pulses},
author = {Li, Sha and Jones, R. R.},
abstractNote = {Electrons ejected from atoms and subsequently driven to high energies in strong laser fields enable techniques from attosecond pulse generation to imaging with rescattered electrons. Analogous processes govern strong-field electron emission from nanostructures, where long wavelength radiation and large local field enhancements hold the promise for producing electrons with substantially higher energies, allowing for higher resolution time-resolved imaging. Here we report on the use of single-cycle terahertz pulses to drive electron emission from unbiased nano-tips. Energies exceeding 5 keV are observed, substantially greater than previously attained at higher drive frequencies. Despite large differences in the magnitude of the respective local fields, we find that the maximum electron energies are only weakly dependent on the tip radius, for 10 nm<1,000 nm. As a result, due to the single-cycle nature of the field, the high-energy electron emission is predicted to be confined to a single burst, potentially enabling a variety of applications.},
doi = {10.1038/ncomms13405},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Thu Nov 10 00:00:00 EST 2016},
month = {Thu Nov 10 00:00:00 EST 2016}
}
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