Open AccessFast retrieval of temporal characteristics of FEL pulses using streaking by THz field
Author(s) -
A. K. Kazansky,
I. P. Sazhina,
Н. М. Кабачник
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.012939
Subject(s) - streaking , optics , physics , terahertz radiation , photoelectric effect , field (mathematics) , photon , range (aeronautics) , materials science , mathematics , pure mathematics , composite material
A simple and very fast method for reconstruction of temporal structure of linearly polarized FEL pulses from the THz streaking spectra of photoelectrons is suggested. The method is based on a quantum mechanical approach within the strong-field approximation. The method is suitable for online retrieval of the temporal characteristics of the FEL pulses. It can be applied for any photon frequency in a broad range of FEL pulse duration with a proper selection of the streaking field. To enhance its accuracy, it is suggested to simultaneously analyze the streaking spectra for several emission angles.