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

• Verfasst von: Labeye, Marie [VerfasserIn]
• Verfasst von: Lévêque, Camille [VerfasserIn]
• Titel: Dynamical distortions of structural signatures in molecular high-order harmonic spectroscopy
• Verf.angabe: Marie Labeye, François Risoud, Camille Lévêque, Jérémie Caillat, Alfred Maquet, Tahir Shaaran, Pascal Salières, and Richard Taïeb
• E-Jahr: 2019
• Jahr: 11 January 2019
• Umfang: 16 S.
• Fussnoten: Gesehen am 08.4.2019
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2019
• Band/Heft Quelle: 99(2019,1) Artikel-Nummer 013412, 16 Seiten
• ISSN Quelle: 2469-9934
• DOI: doi:10.1103/PhysRevA.99.013412
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1662928386

Abstract

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 Chirilă 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.