Abstract:
We analyze the doubly differential electron distribution in atomic above-threshold ionization by a linearly-polarized short-laser pulse. We generalize the one-dimensional (1D) simple man's model (SMM) of Arbó et al. [19], to a three dimensional (3D) description by using the saddle-point approximation (SPA). We prove that the factorization of the photoelectron spectrum in terms of intracycle and intercycle interference patterns can be extended to the doubly differential momentum distribution. Intercycle interference corresponds to the well-known ATI peaks of the photoelectron spectrum arising from the superposition of electron trajectories released at complex times during different optical cycles, whereas intracycle interference comes from the coherent superposition of trajectories released within the same optical cycle. We verify the SPA predictions by comparison with time-dependent distorted wave calculations and the solutions of the full 3D time-dependent Schrödinger equation (TDSE). An analytical expression for the complete interference pattern within the SPA is presented showing excellent agreement with the numerical calculations. We show that the recently proposed semiclassical description based on the SMM in terms of a diffraction process at a time grating remains unchanged when considering the full 3D problem within the SPA. © 2011 Elsevier B.V. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | Doubly differential diffraction at a time grating in above-threshold ionization: Intracycle and intercycle interferences |
Autor: | Arbó, D.G.; Ishikawa, K.L.; Persson, E.; Burgdörfer, J. |
Filiación: | Institute for Astronomy and Space Physics, IAFE (CONICET-UBA), CC 67, Suc. 28, (1428) Buenos Aires, Argentina Photon Science Center, Graduate School of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstraß e 8-10/136, A-1040 Vienna, Austria
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Palabras clave: | Above-threshold ionization; Intracycle interference; Short-laser pulse; 3-D problems; Above-threshold ionization; Analytical expressions; Coherent superpositions; Diffraction process; Dinger equation; Distorted-wave calculations; Doubly differential; Electron distributions; Electron trajectories; Interference patterns; Momentum distributions; Numerical calculation; Optical cycles; Photoelectron spectrum; Saddle-point approximation; Short laser pulse; Time-dependent; Diffraction; Ionization; Laser pulses; Photoelectrons; Three dimensional |
Año: | 2012
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Volumen: | 279
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Página de inicio: | 24
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Página de fin: | 30
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DOI: |
http://dx.doi.org/10.1016/j.nimb.2011.10.030 |
Título revista: | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
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Título revista abreviado: | Nucl Instrum Methods Phys Res Sect B
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ISSN: | 0168583X
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CODEN: | NIMBE
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0168583X_v279_n_p24_Arbo |
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Citas:
---------- APA ----------
Arbó, D.G., Ishikawa, K.L., Persson, E. & Burgdörfer, J.
(2012)
. Doubly differential diffraction at a time grating in above-threshold ionization: Intracycle and intercycle interferences. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 279, 24-30.
http://dx.doi.org/10.1016/j.nimb.2011.10.030---------- CHICAGO ----------
Arbó, D.G., Ishikawa, K.L., Persson, E., Burgdörfer, J.
"Doubly differential diffraction at a time grating in above-threshold ionization: Intracycle and intercycle interferences"
. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 279
(2012) : 24-30.
http://dx.doi.org/10.1016/j.nimb.2011.10.030---------- MLA ----------
Arbó, D.G., Ishikawa, K.L., Persson, E., Burgdörfer, J.
"Doubly differential diffraction at a time grating in above-threshold ionization: Intracycle and intercycle interferences"
. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 279, 2012, pp. 24-30.
http://dx.doi.org/10.1016/j.nimb.2011.10.030---------- VANCOUVER ----------
Arbó, D.G., Ishikawa, K.L., Persson, E., Burgdörfer, J. Doubly differential diffraction at a time grating in above-threshold ionization: Intracycle and intercycle interferences. Nucl Instrum Methods Phys Res Sect B. 2012;279:24-30.
http://dx.doi.org/10.1016/j.nimb.2011.10.030