Efficient extraction of high power THz radiation generated by an ultra-relativistic electron beam in a dielectric loaded waveguide

Antipov, S.; Baryshev, S. V.; Kostin, R.; Baturin, S.; Qiu, J.; Jing, C.; Swinson, C.; Fedurin, M.; Wang, D.

doi:10.1063/1.4963762

Efficient extraction of high power THz radiation generated by an ultra-relativistic electron beam in a dielectric loaded waveguide

Journal Article · Mon Oct 03 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4963762· OSTI ID:1346750

Antipov, S. ^[1]; Baryshev, S. V. ^[1]; Kostin, R. ^[1]; Baturin, S. ^[1]; Qiu, J. ^[1]; Jing, C. ^[1]; Swinson, C. ^[2]; Fedurin, M. ^[2]; Wang, D. ^[3]

Euclid Techlabs LLC, Solon, OH (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Argonne National Lab. (ANL), Lemont, IL (United States); Tsinghua Univ., Beijing (China)

Here, we have measured an intense THz radiation produced by a sub-picosecond, relativistic electron bunch in a dielectric loaded waveguide. For efficient THz pulse extraction, the dielectric loaded waveguide end was cut at an angle. For an appropriate choice of angle cut, such antenna converts the TM₀₁ mode excited in the waveguide into a free-space fundamental Gauss-Hermite mode propagating at an angle with respect to the electron beam trajectory. Simulations show that more than 95% of energy can be extracted using such a simple approach. More than 40 oscillations of about 170 ps long 0.48 THz signal were explicitly measured with an interferometer and 10 μJ of energy per pulse, as determined with a calorimetric energy meter, were delivered outside the electron beamline to an area suitable for THz experiments.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

OSTI ID:: 1346750

Report Number(s):: BNL--113627-2017-JA; KB0202011

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 14 Vol. 109; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies Vinatier, T.; Assmann, R. W.; Dorda, U. Journal of Applied Physics, Vol. 125, Issue 16 https://doi.org/10.1063/1.5091109	journal	April 2019
Continuously tunable narrow-band terahertz generation with a dielectric lined waveguide driven by short electron bunches Pacey, T. H.; Saveliev, Y.; Healy, A. Physical Review Accelerators and Beams, Vol. 22, Issue 9 https://doi.org/10.1103/physrevaccelbeams.22.091302	journal	September 2019
Compact and powerful THz source investigation on laser plasma wakefield injector and dielectric lined structure Shi, L.; Johnson, S. L.; Reiche, S. Physical Review Accelerators and Beams, Vol. 23, Issue 1 https://doi.org/10.1103/physrevaccelbeams.23.014701	journal	January 2020
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Simulation of a Concept for a Compact Ultrafast X-ray Pulse Source Based on RF and THz Technologies Vinatier, T.; Assmann, R. W.; Dorda, U. Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-02754	text	January 2019
Compact and powerful THz source investigation on laser plasma wakefield injector and dielectric lined structure Shi, Liangliang; Johnson, Steven; Reiche, Sven ETH Zurich https://doi.org/10.3929/ethz-b-000395673	text	January 2020

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