High power terahertz radiation source based on electron beam wakefields
- 1 February 2013
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 84 (2), 022706
- https://doi.org/10.1063/1.4790432
Abstract
A table top device for producing high peak power (tens of megawatts to a gigawatt) T-ray beams is described. An electron beam with a rectangular longitudinal profile is produced out of a photoinjector via stacking of the laser pulses. The beam is also run off-crest of the photoinjector rf to develop an energy chirp. After passing through a dielectric loaded waveguide, the beam's energy becomes modulated by its self-wake. In a chicane beamline following the dielectric energy-bunching section this energy modulation is converted to a density modulation-a bunch train. The density modulated beam can be sent through a power extraction section, like a dielectric loaded accelerating structure, or simply can intercept a foil target, producing THz radiation of various bandwidths and power levels.Keywords
Funding Information
- U.S. Department of Energy (DE-SC0006299)
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