Bulletin of the American Physical Society
Four Corners Section 2023 Meeting
Friday–Saturday, October 20–21, 2023; River Woods Conference Center, Logan, Utah
Session N02: Atomic, Molecular, and Optical Physics II
8:30 AM–10:08 AM,
Saturday, October 21, 2023
Riverwoods Conference Center
Room: Cottonwood
Chair: Hannah Wistrand, Colorado School of Mines
Abstract: N02.00002 : Pulse Characterization via Two-Photon Auto- and Cross-Correlation Signals*
8:44 AM–8:58 AM
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)
In the method, analytic solutions for two-photon ionization of atoms by Gaussian pulses are used to characterize the pulse as a superpositions of multiple Gaussians at multi-color central frequencies. This approach allows one to use two-photon auto- and cross-correlation signals to characterize ultrashort pulses and pulse trains, i.e. the time-dependent amplitude, phase, and chirp variation of the electric field. 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. Intereference 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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