Molecular echoes in space and time
Abstract
Mountain echoes are a well-known phenomenon, where an impulse excitation is mirrored by the rocks to generate a replica of the original stimulus, often with reverberating recurrences. For spin echoes in magnetic resonance and photon echoes in atomic and molecular systems the role of the mirror is played by a second, time delayed pulse which is able to reverse the ow of time and recreate the original event. Recently, laser-induced rotational alignment and orientation echoes were introduced for molecular gases, and discussed in terms of rotational-phase-space filamentation. Here we present, for the first time, a direct spatiotemporal analysis of various molecular alignment echoes by means of coincidence Coulomb explosion imaging. We observe hitherto unreported spatially rotated echoes, that depend on the polarization direction of the pump pulses, and find surprising imaginary echoes at negative times.
Keywords
Cite
@article{arxiv.1606.08200,
title = {Molecular echoes in space and time},
author = {Kang Lin and Peifen Lu and Junyang Ma and Xiaochun Gong and Qiying Song and Qinying Ji and Wenbin Zhang and Heping Zeng and Jian Wu and Gabriel Karras and Guillaume Siour and Jean-Michel Hartmann and Olivier Faucher and Erez Gershnabel and Yehiam Prior and Ilya Sh. Averbukh},
journal= {arXiv preprint arXiv:1606.08200},
year = {2016}
}
Comments
9 pages, 8 figures and supplementary information