Attosecond Quantum-Beat Spectroscopy in Helium
Atomic Physics
2015-09-04 v1 Quantum Physics
Abstract
The evolution of electron wavepackets determines the course of many physical and chemical phenomena and attosecond spectroscopy aims to measure and control such dynamics in real-time. Here, we investigate radial electron wavepacket motion in Helium by using an XUV attosecond pulse train to prepare a coherent superposition of excited states and a delayed femtosecond IR pulse to ionize them. Quantum beat signals observed in the high resolution photoelectron spectrogram allow us to follow the field-free evolution of the bound electron wavepacket and determine the time-dependent ionization dynamics of the low-lying 2p state.
Cite
@article{arxiv.1509.00871,
title = {Attosecond Quantum-Beat Spectroscopy in Helium},
author = {Niranjan Shivaram and Xiao-Min Tong and Henry Timmers and Arvinder Sandhu},
journal= {arXiv preprint arXiv:1509.00871},
year = {2015}
}
Comments
10 pages, 6 figures