Characterization of vacuum and deep ultraviolet pulses via two-photon autocorrelation signals
Abstract
Characterization of ultrashort vacuum and deep ultraviolet pulses is important in view of applications of those pulses for spectroscopic and dynamical imaging of atoms, molecules, and materials. We present an extension of the autocorrelation technique, applied for measurement of the pulse duration via a single Gaussian function. Analytic solutions for two-photon ionization of atoms by Gaussian pulses are used along with an expansion of the pulse to be characterized using multiple Gaussians at multi-color central frequencies. This approach allows one to use two-photon autocorrelation signals to characterize isolated ultrashort pulses and pulse trains, i.e., the time-dependent amplitude and phase variation of the electric field. The potential of the method is demonstrated using vacuum and deep ultraviolet pulses and pulse trains obtained from numerical simulations of macroscopic high harmonic spectra.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 22, 2021
- Source ID
- 10.1364/ol.427200
Entities
People
- A. Becker
- Andreas Becker
- Ran Reiff
- Spencer Walker
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- University of Colorado Boulder