Abstract
The application of velocity map imaging for the detection of photoelectrons resulting from atomic or molecular ionization allows the observation of interferometric, and in some cases holographic structures that contain detailed information on the target from which the photoelecrons are extracted. In this contribution we present three recent examples of the use of photoelectron velocity map imaging in experiments where atoms are exposed to strong optical and dc electric fields. We discuss (i) observations of the nodal structure of Stark states of hydrogen measured in a dc electric field, (ii) mid-infrared strong-field ionization of metastable Xe atoms and (iii) the reconstruction of helium electronic wavepackets in an attosecond pump-probe experiment. In each case, the interference between direct and indirect electron pathways, reminiscent of the reference and signal waves in holography, is seen to play an important role.
Highlights
The principle of holography was conceived in 1948 by Gabor as a method to overcome the limitations that existed in electron microscopes [1]
In this contribution we present three recent examples of the use of photoelectron velocity map imaging in experiments where atoms are exposed to strong optical and dc electric fields
As discussed in this article, the formation of holograms involving the interference between a reference electron wave that leaves an atomic or molecular system directly along a simple trajectory and a signal electron wave that involves a more complex motion, has in the last few years been recognized in a number of situations of dynamical interest, including both the ionization in strong optical and dc electric doi:10.1088/1742-6596/488/1/012007
Summary
This content has been downloaded from IOPscience. Please scroll down to see the full text. Ser. 488 012007 (http://iopscience.iop.org/1742-6596/488/1/012007) View the table of contents for this issue, or go to the journal homepage for more. Download details: IP Address: 194.171.111.64 This content was downloaded on 19/08/2014 at 13:09 Please note that terms and conditions apply. XXVIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2013) IOP Publishing. Journal of Physics: Conference Series 488 (2014) 012007 doi:10.1088/1742-6596/488/1/012007.
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