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Abstract:

We study the ionization of atomic hydrogen in the direction of polarization due to a linearly polarized XUV pulse in the presence of a strong IR laser. We describe the photoelectron spectra as an interference problem in the time domain. Electron trajectories stemming from different optical laser cycles give rise to intercycle interference energy peaks known as sidebands. These sidebands are modulated by a coarse-grained structure coming from the intracycle interference of the two electron trajectories born during the same optical cycle. We make use of a simple semiclassical model that offers the possibility to establish a connection between emission times and the photoelectron kinetic energy. We analyze such interference pattern as a function of the time delay between the IR and the XUV pulses and also as a function of the laser intensity. We compare the semiclassical predictions with the continuum-distorted-wave strong-field approximation and the ab initio solution of the time-dependent Schrödinger equation. © 2016 American Physical Society.

Registro:

Documento: Artículo
Título:Intra- and intercycle interference of electron emissions in laser-assisted XUV atomic ionization
Autor:Gramajo, A.A.; Della Picca, R.; Garibotti, C.R.; Arbó, D.G.
Filiación:Centro Atómico Bariloche, CNEA, CONICET, Bariloche, 8400, Argentina
Institute for Astronomy and Space Physics IAFE (CONICET-UBA), Casilla de Correo 67, Sucursal 28, Buenos Aires, C1428ZAA, Argentina
Palabras clave:Distortion (waves); Ionization; Kinetic energy; Kinetics; Photoelectrons; Photons; Polarization; Time delay; Coarse-grained structure; Continuum distorted waves; Electron trajectories; Interference problems; Intracycle interferences; Photoelectron kinetic energy; Photoelectron spectrum; Strong-field approximations; Photoelectron spectroscopy
Año:2016
Volumen:94
Número:5
DOI: http://dx.doi.org/10.1103/PhysRevA.94.053404
Título revista:Physical Review A
Título revista abreviado:Phys. Rev. A
ISSN:24699926
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v94_n5_p_Gramajo

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Citas:

---------- APA ----------
Gramajo, A.A., Della Picca, R., Garibotti, C.R. & Arbó, D.G. (2016) . Intra- and intercycle interference of electron emissions in laser-assisted XUV atomic ionization. Physical Review A, 94(5).
http://dx.doi.org/10.1103/PhysRevA.94.053404
---------- CHICAGO ----------
Gramajo, A.A., Della Picca, R., Garibotti, C.R., Arbó, D.G. "Intra- and intercycle interference of electron emissions in laser-assisted XUV atomic ionization" . Physical Review A 94, no. 5 (2016).
http://dx.doi.org/10.1103/PhysRevA.94.053404
---------- MLA ----------
Gramajo, A.A., Della Picca, R., Garibotti, C.R., Arbó, D.G. "Intra- and intercycle interference of electron emissions in laser-assisted XUV atomic ionization" . Physical Review A, vol. 94, no. 5, 2016.
http://dx.doi.org/10.1103/PhysRevA.94.053404
---------- VANCOUVER ----------
Gramajo, A.A., Della Picca, R., Garibotti, C.R., Arbó, D.G. Intra- and intercycle interference of electron emissions in laser-assisted XUV atomic ionization. Phys. Rev. A. 2016;94(5).
http://dx.doi.org/10.1103/PhysRevA.94.053404