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Title: Attosecond Temporal Gating with Elliptically Polarized Light

Abstract

Temporal gating allows high accuracy time-resolved measurements of a broad range of ultrafast processes. By manipulating the interaction between an atom and an intense laser field, we extend gating into the nonlinear medium in which attosecond optical and electron pulses are generated. Our gate is an amplitude gate induced by ellipticity of the fundamental pulse. The gate modulates the spectrum of the high harmonic emission and we use the measured modulation to characterize the sub-laser-cycle dynamics of the recollision electron wave packet.

Authors:
; ; ; ;  [1];  [1];  [2];  [1];  [3];  [4]
  1. Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario K1A 0R6 (Canada)
  2. (Canada)
  3. (Germany)
  4. INRS-EMT, 1650 boulevard Lionel-Boulet, CP 1020, Varennes, Quebec J3X 1S2 (Canada)
Publication Date:
OSTI Identifier:
20861524
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 97; Journal Issue: 25; Other Information: DOI: 10.1103/PhysRevLett.97.253903; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; ATOMS; ELECTRONS; LASER RADIATION; LASERS; MODULATION; NONLINEAR PROBLEMS; PULSES; TIME RESOLUTION; VISIBLE RADIATION; WAVE PACKETS

Citation Formats

Dudovich, N., Smirnova, O., Ivanov, M. Yu., Villeneuve, D. M., Corkum, P. B., Levesque, J., INRS-EMT, 1650 boulevard Lionel-Boulet, CP 1020, Varennes, Quebec J3X 1S2, Zeidler, D., Carl Zeiss SMT AG, Oberkochen D-73447, and Comtois, D. Attosecond Temporal Gating with Elliptically Polarized Light. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.97.253903.
Dudovich, N., Smirnova, O., Ivanov, M. Yu., Villeneuve, D. M., Corkum, P. B., Levesque, J., INRS-EMT, 1650 boulevard Lionel-Boulet, CP 1020, Varennes, Quebec J3X 1S2, Zeidler, D., Carl Zeiss SMT AG, Oberkochen D-73447, & Comtois, D. Attosecond Temporal Gating with Elliptically Polarized Light. United States. doi:10.1103/PHYSREVLETT.97.253903.
Dudovich, N., Smirnova, O., Ivanov, M. Yu., Villeneuve, D. M., Corkum, P. B., Levesque, J., INRS-EMT, 1650 boulevard Lionel-Boulet, CP 1020, Varennes, Quebec J3X 1S2, Zeidler, D., Carl Zeiss SMT AG, Oberkochen D-73447, and Comtois, D. Fri . "Attosecond Temporal Gating with Elliptically Polarized Light". United States. doi:10.1103/PHYSREVLETT.97.253903.
@article{osti_20861524,
title = {Attosecond Temporal Gating with Elliptically Polarized Light},
author = {Dudovich, N. and Smirnova, O. and Ivanov, M. Yu. and Villeneuve, D. M. and Corkum, P. B. and Levesque, J. and INRS-EMT, 1650 boulevard Lionel-Boulet, CP 1020, Varennes, Quebec J3X 1S2 and Zeidler, D. and Carl Zeiss SMT AG, Oberkochen D-73447 and Comtois, D.},
abstractNote = {Temporal gating allows high accuracy time-resolved measurements of a broad range of ultrafast processes. By manipulating the interaction between an atom and an intense laser field, we extend gating into the nonlinear medium in which attosecond optical and electron pulses are generated. Our gate is an amplitude gate induced by ellipticity of the fundamental pulse. The gate modulates the spectrum of the high harmonic emission and we use the measured modulation to characterize the sub-laser-cycle dynamics of the recollision electron wave packet.},
doi = {10.1103/PHYSREVLETT.97.253903},
journal = {Physical Review Letters},
number = 25,
volume = 97,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2006},
month = {Fri Dec 22 00:00:00 EST 2006}
}
  • We present a quantum-mechanical theory of xuv generation by an elliptically polarized intense laser field. Our approach is valid when the Keldysh parameter {gamma} is about unity or less, and the driving ellipticity is less than {radical}(2){gamma}. After the photoionization the motion of the electronic wave packet along the major axis of the driving field polarization ellipse is described quasiclassically, whereas the motion in the transverse direction is considered fully quantum mechanically; we also find the condition that allows the reduction of the motion description to a quantum orbit in the polarization plane of the laser field. We use themore » ionization rate calculated via numerical solution of the three-dimensional Schroedinger equation (TDSE), and take into account the Coulomb modification of the free electronic wave packet. The predictions of our theory for xuv emission agree well with numerical and experimental results. We study the high harmonic intensities and phases as functions of the driving intensity and ellipticity, and also the ellipticity and the rotation angle of the harmonic field polarization ellipse as functions of the driving ellipticity. The atomic response is decomposed into the contributions of different quantum paths. This allows finding a straightforward explanation for the observed dependencies.« less
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  • The angular distributions of electrons in multiphoton multichannel ionization of hydrogen for the case of elliptically polarized laser light are calculated within a nonperturbative theoretical model taking into account the Coulomb interaction in the final state. It is found that the ellipticity of the radiation not only modifies the shape but also lowers the fourfold rotational symmetry occurring in linear polarization to a twofold one.