Quantum interference and imaging using intense laser fields
arXiv:2103.05686 · doi:10.1140/epjd/s10053-021-00269-3
Abstract
The interference of matter waves is one of the intriguing features of quantum mechanics that has impressed researchers and laymen since it was first suggested almost a century ago. Nowadays, attosecond science tools allow us to utilize it in order to extract valuable information from electron wavepackets. Intense laser fields are routinely employed to create electron wave packets and control their motion with sub-femtosecond and sub-nanometer precision. In this perspective article, we discuss some of the peculiarities of intense light-matter interaction. We review some of the most important techniques used in attosecond imaging, namely photoelectron holography and laser-induced electron diffraction. We attempt to ask and answer a few questions that do not get asked very often. For example, if we are interested in position space information, why are measurements carried out in momentum space? How to accurately retrieve photoelecron spactra from the numerical solution of the time-dependent Schrödinger equation? And, what causes the different coherence properties of high-harmonic generation and above-threshold ionization?
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