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Demonstration of sub-luminal propagation of single-cycle terahertz pulses for particle acceleration

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Demonstration of sub-luminal propagation of single-cycle terahertz pulses for particle acceleration. / Walsh, D.A.; Lake, D.S.; Snedden, E.W.; Cliffe, M.J.; Graham, D.M.; Jamison, S.P.

In: Nature Communications, Vol. 8, No. 1, 421, 04.09.2017.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Walsh, DA, Lake, DS, Snedden, EW, Cliffe, MJ, Graham, DM & Jamison, SP 2017, 'Demonstration of sub-luminal propagation of single-cycle terahertz pulses for particle acceleration', Nature Communications, vol. 8, no. 1, 421. https://doi.org/10.1038/s41467-017-00490-y

APA

Walsh, D. A., Lake, D. S., Snedden, E. W., Cliffe, M. J., Graham, D. M., & Jamison, S. P. (2017). Demonstration of sub-luminal propagation of single-cycle terahertz pulses for particle acceleration. Nature Communications, 8(1), [421]. https://doi.org/10.1038/s41467-017-00490-y

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Walsh, D.A. ; Lake, D.S. ; Snedden, E.W. ; Cliffe, M.J. ; Graham, D.M. ; Jamison, S.P. / Demonstration of sub-luminal propagation of single-cycle terahertz pulses for particle acceleration. In: Nature Communications. 2017 ; Vol. 8, No. 1.

Bibtex

@article{d8ff68128f964266ba9f78af80ad5792,
title = "Demonstration of sub-luminal propagation of single-cycle terahertz pulses for particle acceleration",
abstract = "The sub-luminal phase velocity of electromagnetic waves in free space is generally unobtainable, being closely linked to forbidden faster than light group velocities. The requirement of sub-luminal phase-velocity in laser-driven particle acceleration schemes imposes a limit on the total acceleration achievable in free space, and necessitates the use of dispersive structures or waveguides for extending the field-particle interaction. We demonstrate a travelling source approach that overcomes the sub-luminal propagation limits. The approach exploits ultrafast optical sources with slow group velocity propagation, and a group-to-phase front conversion through nonlinear optical interaction. The concept is demonstrated with two terahertz generation processes, nonlinear optical rectification and current-surge rectification. We report measurements of longitudinally polarised single-cycle electric fields with phase and group velocity between 0.77c and 1.75c. The ability to scale to multi-megavolt-per-metre field strengths is demonstrated. Our approach paves the way towards the realisation of cheap and compact particle accelerators with femtosecond scale control of particles.",
author = "D.A. Walsh and D.S. Lake and E.W. Snedden and M.J. Cliffe and D.M. Graham and S.P. Jamison",
year = "2017",
month = sep,
day = "4",
doi = "10.1038/s41467-017-00490-y",
language = "English",
volume = "8",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

RIS

TY - JOUR

T1 - Demonstration of sub-luminal propagation of single-cycle terahertz pulses for particle acceleration

AU - Walsh, D.A.

AU - Lake, D.S.

AU - Snedden, E.W.

AU - Cliffe, M.J.

AU - Graham, D.M.

AU - Jamison, S.P.

PY - 2017/9/4

Y1 - 2017/9/4

N2 - The sub-luminal phase velocity of electromagnetic waves in free space is generally unobtainable, being closely linked to forbidden faster than light group velocities. The requirement of sub-luminal phase-velocity in laser-driven particle acceleration schemes imposes a limit on the total acceleration achievable in free space, and necessitates the use of dispersive structures or waveguides for extending the field-particle interaction. We demonstrate a travelling source approach that overcomes the sub-luminal propagation limits. The approach exploits ultrafast optical sources with slow group velocity propagation, and a group-to-phase front conversion through nonlinear optical interaction. The concept is demonstrated with two terahertz generation processes, nonlinear optical rectification and current-surge rectification. We report measurements of longitudinally polarised single-cycle electric fields with phase and group velocity between 0.77c and 1.75c. The ability to scale to multi-megavolt-per-metre field strengths is demonstrated. Our approach paves the way towards the realisation of cheap and compact particle accelerators with femtosecond scale control of particles.

AB - The sub-luminal phase velocity of electromagnetic waves in free space is generally unobtainable, being closely linked to forbidden faster than light group velocities. The requirement of sub-luminal phase-velocity in laser-driven particle acceleration schemes imposes a limit on the total acceleration achievable in free space, and necessitates the use of dispersive structures or waveguides for extending the field-particle interaction. We demonstrate a travelling source approach that overcomes the sub-luminal propagation limits. The approach exploits ultrafast optical sources with slow group velocity propagation, and a group-to-phase front conversion through nonlinear optical interaction. The concept is demonstrated with two terahertz generation processes, nonlinear optical rectification and current-surge rectification. We report measurements of longitudinally polarised single-cycle electric fields with phase and group velocity between 0.77c and 1.75c. The ability to scale to multi-megavolt-per-metre field strengths is demonstrated. Our approach paves the way towards the realisation of cheap and compact particle accelerators with femtosecond scale control of particles.

U2 - 10.1038/s41467-017-00490-y

DO - 10.1038/s41467-017-00490-y

M3 - Journal article

VL - 8

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 421

ER -