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  • Open Access

Three-dimensional laser pulse intensity diagnostic for photoinjectors

Heng Li*, Ivan V. Bazarov, and Bruce M. Dunham

Frank W. Wise

  • Cornell Laboratory for Accelerator-based Sciences and Education (CLASSE), Physics Department, Cornell University, Ithaca, New York 14853, USA

  • Department of Applied Physics, Cornell University, Ithaca, New York 14853, USA

  • *hl344@cornell.edu

Phys. Rev. ST Accel. Beams 14, 112802 – Published 21 November, 2011

DOI: https://doi.org/10.1103/PhysRevSTAB.14.112802

Abstract

Minimizing the electron-beam emittance of photoinjectors is an important task for maximizing the brightness of the next-generation x-ray facilities, such as free-electron lasers and energy recovery linacs. Optimally shaped laser pulses can significantly reduce emittance. A reliable diagnostic for the laser pulse intensity is required for this purpose. We demonstrate measurement of three-dimensional spatiotemporal intensity profiles, with spatial resolution of 20μm and temporal resolution of 130 fs. The capability is illustrated by measurements of stacked soliton pulses and pulses from a dissipative-soliton laser.

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