Optical deflection and temporal characterization of an ultrafast laser-produced electron beam

Sudeep Banerjee, Scott Sepke, Rahul Shah, Anthony Valenzuela, Anatoly Maksimchuk, Donald Umstadter

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The interaction of a laser-produced electron beam with an ultraintense laser pulse in free space is studied. We show that the optical pulse with a0=0.5 imparts momentum to the electron beam, causing it to deflect along the laser propagation direction. The observed 3-degree angular deflection is found to be independent of polarization and in good agreement with a theoretical model for the interaction of free electrons with a tightly focused Gaussian pulse, but only when longitudinal fields are taken into account. This technique is used to temporally characterize a subpicosecond laser-wakefield-driven electron bunch. Applications to electron-beam conditioning are also discussed.

Original languageEnglish (US)
Article number035004
JournalPhysical Review Letters
Issue number3
Publication statusPublished - Jul 15 2005


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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