Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session P05: Attosecond Light Sources and Their Applications
10:30 AM–12:30 PM,
Thursday, June 6, 2024
Room: 202AB
Chair: James Cryan, SLAC National Accelerator Laboratory
Abstract: P05.00005 : Pulse Characterization via Two-Photon Auto- and Cross-Correlation Signals*
11:54 AM–12:06 PM
Presenter:
Keegan M Finger
(JILA & Department of Physics University of Colorado, Boulder)
Authors:
Keegan M Finger
(JILA & Department of Physics University of Colorado, Boulder)
Spencer R Walker
(JILA & Department of Physics University of Colorado, Boulder)
Bejan Ghomashi
(JILA & Department of Physics University of Colorado, Boulder)
Andreas Becker
(JILA & Department of Physics University of Colorado, Boulder)
We present a self-consistent method, extended from the technique proposed in [1], for fully characterizing ultrashort pulses and pulse trains via photoionization spectra.
In this method, analytic solutions for two-photon ionization of atoms by Gaussian pulses are used to characterize the pulse as a superposition of multiple Gaussians at multi-color central frequencies. This approach allows one to use auto- and cross-correlation signals to characterize the time-dependent amplitude, phase, and chirp variation of the electric field from the pulse. This method is demonstrated with vacuum and deep ultraviolet pulses and pulse trains obtained from numerical simulations of macroscopic high harmonic spectra [2].
[1] S. Walker, R. Reiff, A. Jaron-Becker, and A. Becker. Characterization of vacuum and deep ultraviolet pulses via
two-photon autocorrelation signals. Opt. Lett., 46(13):3083–3086, Jul 2021.
[2] R. Reiff, J. Venzke, A. Jaron-Becker, and A. Becker. Interference effects in harmonic generation induced by focal
phase distribution. OSA Continuum, 4(7):1897–1906, Jul 2021.
*This work was supported by the National Science Foundation (Award Number: PHY-2207995).
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