title: Measured photoemission from electron wave packets in a strong laser field.
abstract: We present calibrated measurements of single-photon Thomson scattering from free electrons driven by a laser with intensity 1018W/cm2. The measurements demonstrate that individual electrons radiate with the strength of point emitters, even when their wave packets spread to the scale of the driving-laser wavelength. The result agrees with predictions of quantum electrodynamics.
authors.forename: Michael
authors.initials: M
authors.lastname: Ware
authors.forename: Eric
authors.initials: E
authors.lastname: Cunningham
authors.forename: Caleb
authors.initials: C
authors.lastname: Coburn
authors.forename: Justin
authors.initials: J
authors.lastname: Peatross