Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches
Ultrashort electron bunches are useful for applications like ultrafast imaging, coherent radiation production, and the design of compact electron accelerators. Currently, however, the shortest achievable bunches, at attosecond time scales, have only been realized in the single- or very few-electron...
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sg-ntu-dr.10356-1057392023-02-28T19:46:17Z Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches Lim, Jeremy Chong, Yidong Wong, Liang Jie School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) DRNTU::Science::Physics Attosecond Electron Pulse Shaping Coherent Terahertz Sources Ultrashort electron bunches are useful for applications like ultrafast imaging, coherent radiation production, and the design of compact electron accelerators. Currently, however, the shortest achievable bunches, at attosecond time scales, have only been realized in the single- or very few-electron regimes, limited by Coulomb repulsion and electron energy spread. Using ab initio simulations and complementary theoretical analysis, we show that highly-charged bunches are achievable by subjecting relativistic (few MeV-scale) electrons to a superposition of terahertz and optical pulses. We provide two detailed examples that use realistic electron bunches and laser pulse parameters which are within the reach of current compact set-ups: one with bunches of >240 electrons contained within 20 as durations and 15 μm radii, and one with final electron bunches of 1 fC contained within sub-400 as durations and 8 μm radii. Our results reveal a route to achieve such extreme combinations of high charge and attosecond pulse durations with existing technology. ASTAR (Agency for Sci., Tech. and Research, S’pore) Published version 2019-06-14T04:08:15Z 2019-12-06T21:57:00Z 2019-06-14T04:08:15Z 2019-12-06T21:57:00Z 2019 Journal Article Lim, J., Chong, Y., & Wong, L. J. (2019). Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches. New Journal of Physics, 21(3), 033020-. doi:10.1088/1367-2630/ab0aa7 https://hdl.handle.net/10356/105739 http://hdl.handle.net/10220/48754 10.1088/1367-2630/ab0aa7 en New Journal of Physics © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. 9 p. application/pdf |
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DRNTU::Science::Physics Attosecond Electron Pulse Shaping Coherent Terahertz Sources Lim, Jeremy Chong, Yidong Wong, Liang Jie Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches |
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Ultrashort electron bunches are useful for applications like ultrafast imaging, coherent radiation production, and the design of compact electron accelerators. Currently, however, the shortest achievable bunches, at attosecond time scales, have only been realized in the single- or very few-electron regimes, limited by Coulomb repulsion and electron energy spread. Using ab initio simulations and complementary theoretical analysis, we show that highly-charged bunches are achievable by subjecting relativistic (few MeV-scale) electrons to a superposition of terahertz and optical pulses. We provide two detailed examples that use realistic electron bunches and laser pulse parameters which are within the reach of current compact set-ups: one with bunches of >240 electrons contained within 20 as durations and 15 μm radii, and one with final electron bunches of 1 fC contained within sub-400 as durations and 8 μm radii. Our results reveal a route to achieve such extreme combinations of high charge and attosecond pulse durations with existing technology. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Lim, Jeremy Chong, Yidong Wong, Liang Jie |
format |
Article |
author |
Lim, Jeremy Chong, Yidong Wong, Liang Jie |
author_sort |
Lim, Jeremy |
title |
Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches |
title_short |
Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches |
title_full |
Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches |
title_fullStr |
Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches |
title_full_unstemmed |
Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches |
title_sort |
terahertz-optical intensity grating for creating high-charge, attosecond electron bunches |
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2019 |
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https://hdl.handle.net/10356/105739 http://hdl.handle.net/10220/48754 |
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