Control of the high harmonic generation spectra by changing the molecule-laser field relative orientation

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Abstract

The time dependent Schrödinger equation of a homonuclear diatomic molecule in the presence of a linearly polarized laser field is numerically solved by means of a split-operator parallel code. The calculations are carried out by assuming a single active electron model with fixed nuclei; a simplified two-dimensional model of the system is used. The highly nonlinear response of the electron wave function to the laser electric field stimulates the molecule to emit electromagnetic radiation consisting of a wide plateau of odd harmonics of the laser field. It is shown that the emitted spectrum can be finely controlled by changing the angle between the laser electric field and the molecular axis; this can be used to achieve a tunable source of high frequency radiation.
Original languageEnglish
Pages (from-to)625-630
Number of pages6
JournalJOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS
Publication statusPublished - 2010

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harmonic generations
lasers
molecules
electric fields
two dimensional models
diatomic molecules
plateaus
electromagnetic radiation
electrons
wave functions
harmonics
operators
nuclei
radiation

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

Cite this

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title = "Control of the high harmonic generation spectra by changing the molecule-laser field relative orientation",
abstract = "The time dependent Schr{\"o}dinger equation of a homonuclear diatomic molecule in the presence of a linearly polarized laser field is numerically solved by means of a split-operator parallel code. The calculations are carried out by assuming a single active electron model with fixed nuclei; a simplified two-dimensional model of the system is used. The highly nonlinear response of the electron wave function to the laser electric field stimulates the molecule to emit electromagnetic radiation consisting of a wide plateau of odd harmonics of the laser field. It is shown that the emitted spectrum can be finely controlled by changing the angle between the laser electric field and the molecular axis; this can be used to achieve a tunable source of high frequency radiation.",
keywords = "High order harmonics; diatomic molecule; laser-matter interaction;",
author = "Rosalba Daniele and Francesca Morales and Emilio Fiordilino and Corso, {Pietro Paolo} and Gianfranco Orlando and Giuseppe Castiglia",
year = "2010",
language = "English",
pages = "625--630",
journal = "Journal of the Optical Society of America B: Optical Physics",
issn = "0740-3224",
publisher = "The Optical Society",

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TY - JOUR

T1 - Control of the high harmonic generation spectra by changing the molecule-laser field relative orientation

AU - Daniele, Rosalba

AU - Morales, Francesca

AU - Fiordilino, Emilio

AU - Corso, Pietro Paolo

AU - Orlando, Gianfranco

AU - Castiglia, Giuseppe

PY - 2010

Y1 - 2010

N2 - The time dependent Schrödinger equation of a homonuclear diatomic molecule in the presence of a linearly polarized laser field is numerically solved by means of a split-operator parallel code. The calculations are carried out by assuming a single active electron model with fixed nuclei; a simplified two-dimensional model of the system is used. The highly nonlinear response of the electron wave function to the laser electric field stimulates the molecule to emit electromagnetic radiation consisting of a wide plateau of odd harmonics of the laser field. It is shown that the emitted spectrum can be finely controlled by changing the angle between the laser electric field and the molecular axis; this can be used to achieve a tunable source of high frequency radiation.

AB - The time dependent Schrödinger equation of a homonuclear diatomic molecule in the presence of a linearly polarized laser field is numerically solved by means of a split-operator parallel code. The calculations are carried out by assuming a single active electron model with fixed nuclei; a simplified two-dimensional model of the system is used. The highly nonlinear response of the electron wave function to the laser electric field stimulates the molecule to emit electromagnetic radiation consisting of a wide plateau of odd harmonics of the laser field. It is shown that the emitted spectrum can be finely controlled by changing the angle between the laser electric field and the molecular axis; this can be used to achieve a tunable source of high frequency radiation.

KW - High order harmonics; diatomic molecule; laser-matter interaction;

UR - http://hdl.handle.net/10447/50341

UR - http://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-27-4-625

M3 - Article

SP - 625

EP - 630

JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

SN - 0740-3224

ER -