Imperial College London
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ProfessorVitaliAverbukh

Faculty of Natural Sciences, Department of Physics

Professor of Molecular Physics
 
 
 
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Contact

 

+44 (0)20 7594 7746v.averbukh Website

 
 
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Location

 

209Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ruberti:2018:10.1039/c7cp07849h,
author = {Ruberti, M and Decleva, P and Averbukh, V},
doi = {10.1039/c7cp07849h},
journal = {Physical Chemistry Chemical Physics},
pages = {8311--8325},
title = {Multi-channel dynamics in high harmonic generation of aligned CO: ab initio analysis with time-dependent B-spline algebraic diagrammatic construction},
url = {http://dx.doi.org/10.1039/c7cp07849h},
volume = {20},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Here we present a fully ab initio study of the high-order harmonic generation (HHG) spectrum of aligned CO2 molecules. The calculations have been performed by using the molecular time-dependent (TD) B-spline algebraic diagrammatic construction (ADC) method. We quantitatively study how the sub-cycle laser-driven multi-channel dynamics, as reflected in the position of the dynamical minimum in the HHG spectrum, is affected by the full inclusion of both correlation-driven and laser-driven dipole interchannel couplings. We calculate channel-resolved spectral intensities as well as the phase differences between contributions of the different ionization-recombination channels to the total HHG spectrum. Our results show that electron correlation effectively controls the relative contributions of the different channels to the total HHG spectrum, leading to the opening of the new ones (12Πu, 12Σ), previously disregarded for the aligned molecular setup. We conclude that inclusion of many-electron effects into the theoretical interpretation of molecular HHG spectra is essential in order to correctly extract ultrafast electron dynamics using HHG spectroscopy.
AU  - Ruberti,M
AU  - Decleva,P
AU  - Averbukh,V
DO  - 10.1039/c7cp07849h
EP  - 8325
PY  - 2018///
SN  - 1463-9076
SP  - 8311
TI  - Multi-channel dynamics in high harmonic generation of aligned CO: ab initio analysis with time-dependent B-spline algebraic diagrammatic construction
T2  - Physical Chemistry Chemical Physics
UR  - http://dx.doi.org/10.1039/c7cp07849h
UR  - https://www.ncbi.nlm.nih.gov/pubmed/29532820
UR  - http://hdl.handle.net/10044/1/58557
VL  - 20
ER  -
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