Dynamical distortions of structural signatures in molecular high-order harmonic spectroscopy

We study the signature of two-center interferences in molecular high-order harmonic spectra, with an emphasis on the spectral phase. With the help of both ab initio computations based on the time-dependent Schrödinger equation and the molecular strong-field approximation (SFA) as developed by Chiril...

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Veröffentlicht in:Physical review. A 2019-01, Vol.99 (1), Article 013412
Hauptverfasser: Labeye, Marie, Risoud, François, Lévêque, Camille, Caillat, Jérémie, Maquet, Alfred, Shaaran, Tahir, Salières, Pascal, Taïeb, Richard
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container_title Physical review. A
container_volume 99
creator Labeye, Marie
Risoud, François
Lévêque, Camille
Caillat, Jérémie
Maquet, Alfred
Shaaran, Tahir
Salières, Pascal
Taïeb, Richard
description We study the signature of two-center interferences in molecular high-order harmonic spectra, with an emphasis on the spectral phase. With the help of both ab initio computations based on the time-dependent Schrödinger equation and the molecular strong-field approximation (SFA) as developed by Chirilȃ et al. [Phys. Rev. A 73, 023410 (2006)] and Faria [Phys. Rev. A 76, 043407 (2007)], we observe that the phase behavior is radically different for the short and the long trajectory contributions. By means of Taylor expansions of the molecular SFA, we link this effect to the dynamics of the electron in the continuum. More precisely, we find that the value of the electric field at recombination time plays a crucial role in the shape of the destructive interference phase jump.
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subjects Atomic Physics
Chemical Physics
Chemical Sciences
Optics
or physical chemistry
Physics
Theoretical and
title Dynamical distortions of structural signatures in molecular high-order harmonic spectroscopy
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