Polarization and ellipticity of high-order harmonics from aligned molecules generated by linearly polarized intense laser pulses

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.023814· OSTI ID:21448576

Le, Anh-Thu; Lin, C D ^[1]; Lucchese, R R ^[2]

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1. Department of Physics, Cardwell Hall, Kansas State University, Manhattan, Kansas 66506 (United States)
2. Department of Chemistry, Texas A and M University, College Station, Texas 77843-3255 (United States)

We present theoretical calculations for polarization and ellipticity of high-order harmonics from aligned N{sub 2}, CO{sub 2}, and O{sub 2} molecules generated by linearly polarized lasers. Within the rescattering model, the two polarization amplitudes of the harmonics are determined by the photo-recombination amplitudes for photons emitted with polarization parallel or perpendicular to the direction of the same returning electron wave packet. Our results show clear species-dependent polarization states, in excellent agreement with experiments. We further note that the measured polarization ellipse of the harmonic furnishes the needed parameters for a 'complete' experiment in molecules.

• OSTI ID: 21448576
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
BOSONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
FERMIONS
HARMONICS
LASER RADIATION
LEPTONS
MASSLESS PARTICLES
MOLECULE COLLISIONS
MOLECULES
NITROGEN
NONMETALS
OSCILLATIONS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTON COLLISIONS
PHOTON EMISSION
PHOTON-MOLECULE COLLISIONS
PHOTONS
POLARIZATION
PULSES
RADIATIONS
RECOMBINATION
RESCATTERING
SCATTERING
WAVE PACKETS