2019
DOI: 10.1103/physrevlett.122.144801
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Terahertz Oscilloscope for Recording Time Information of Ultrashort Electron Beams

Abstract: We propose and demonstrate a Terahertz (THz) oscilloscope for recording time information of an ultrashort electron beam. By injecting a laser-driven THz pulse with circular polarization into a dielectric tube, the electron beam is swept helically such that the time information is uniformly encoded into the angular distribution that allows one to characterize both the temporal profile and timing jitter of an electron beam. The dynamic range of the measurement in such a configuration is significantly increased c… Show more

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Cited by 61 publications
(41 citation statements)
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“…This is fueled by the impressive advancements made during the last two decades in the development of femtosecond laser-based table-top sources for strong THz radiation [11][12][13] . These intense THz electromagnetic fields have been utilized [14][15][16][17][18] to efficiently accelerate and manipulate electrons to extreme degrees, advancing the frontiers of both the technology and science of nonlinear THz-matter interactions. For example, acceleration of relativistic electron bunches in free space is promising for the realization of next-generation table-top particle accelerators and compact X-ray sources.…”
mentioning
confidence: 99%
“…This is fueled by the impressive advancements made during the last two decades in the development of femtosecond laser-based table-top sources for strong THz radiation [11][12][13] . These intense THz electromagnetic fields have been utilized [14][15][16][17][18] to efficiently accelerate and manipulate electrons to extreme degrees, advancing the frontiers of both the technology and science of nonlinear THz-matter interactions. For example, acceleration of relativistic electron bunches in free space is promising for the realization of next-generation table-top particle accelerators and compact X-ray sources.…”
mentioning
confidence: 99%
“…In our experiment, a vertically polarized THz pulse is directly injected into a dielectric tube (D1) and thus only HEM11 mode is excited. Such a mode has recently been used to deflect electron beam for measuring bunch length and timing jitter [26]. It should be noted that HEM11 mode has longitu-dinal electric field which varies linearly with transverse offset.…”
Section: Pacs Numbersmentioning
confidence: 99%
“…To allow unambiguous determination of the bunch compression effect, in our experiment a polarization rotation (PR) element consisting of a pair of wire grid polarizers and roof mirrors are used to manipulate the THz polarization. As shown in [26], by changing the path length of the two roof mirrors, a vertically polarized THz pulse can be converted into a horizontally polarized pulse.…”
Section: Pacs Numbersmentioning
confidence: 99%
“…A promising approach for enhancing timing resolution in UED pump-probe experiments is to manipulate the electron beam using THz electromagnetic radiation intrinsically synchronized with pump lasers prior to sample interaction. Previously, experimental work was done to demonstrate attosecond electron diagnostics using laser-generated singlecycle THz pulses [24][25][26]. This technique offers beam-to-laser timing characterization with the potential to achieve subfemtosecond accuracy, and at the same time a direct measurement of the bunch length with a sub-femtosecond resolution.…”
Section: Introductionmentioning
confidence: 99%