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

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4963762· OSTI ID:1346750
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3]
  1. Euclid Techlabs LLC, Solon, OH (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States); Tsinghua Univ., Beijing (China)
+ Show Author Affiliations

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.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC00112704
OSTI ID:
1346750
Report Number(s):
BNL-113627-2017-JA; R&D Project: KBCH139; KB0202011; TRN: US1701582
Journal Information:
Applied Physics Letters, Vol. 109, Issue 14; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (7)

Non-perturbing THz generation at the Tsinghua University Accelerator Laboratory 31 MeV electron beamline journal September 2018
High-power terahertz emission from a plasma penetrated by counterstreaming different-size electron beams journal November 2018
Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies journal April 2019
Continuously tunable narrow-band terahertz generation with a dielectric lined waveguide driven by short electron bunches journal September 2019
Compact and powerful THz source investigation on laser plasma wakefield injector and dielectric lined structure journal January 2020
Compact and powerful THz source investigation on laser plasma wakefield injector and dielectric lined structure text January 2020
Simulation of a Concept for a Compact Ultrafast X-ray Pulse Source Based on RF and THz Technologies text January 2019

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