Abstract
Recent experiments in ultrafast physics have established the importance of above-threshold ionization (ATI) experiments in measuring and controlling the carrier-envelope phase (CEP) of few-cycle laser pulses. We have performed an investigation of atomic hydrogen subjected to intense CEP-stable few-cycle laser pulses. The experimental ATI spectra have been compared to predictions from an ab initio numerical solution of the time-dependent Schrödinger equation in three dimensions. Good agreement between experiment and theory has been achieved without using any free fit parameters. Our results provide an important step towards obtaining calibrated reference data for a direct comparison of ATI electron yields for a range of gas species and experimental conditions.
Highlights
New Journal of Physics 15 (2013) 033002 1367-2630/13/033002+09$33.00 and theory has been achieved without using any free fit parameters
Our results provide an important step towards obtaining calibrated reference data for a direct comparison of above-threshold ionization (ATI) electron yields for a range of gas species and experimental conditions
Advancements in laser technologies have led to the generation of intense laser pulses with durations approaching the period of a single electric field oscillation [1]
Summary
New Journal of Physics 15 (2013) 033002 1367-2630/13/033002+09$33.00 and theory has been achieved without using any free fit parameters. In this paper we present CEP-dependent experimental data from the interaction of atomic H with an intense few-cycle pulse and perform a fit-free comparison to 3D TDSE calculations. Our experimental data are compared to theoretical predictions of the photoelectron yield from the interaction of atomic H with a few-cycle pulse.
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