6533b825fe1ef96bd128296d
RESEARCH PRODUCT
Orientation dependence of high-order harmonic generation in molecules
Jonathan P. MarangosManfred LeinPeter L. KnightPietro Paolo Corsosubject
PhysicsLinear polarizationIntramolecular forceMoleculeHigh harmonic generationSurface second harmonic generationElliptical polarizationAtomic physicsPolarization (waves)GeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)Atomic and Molecular Physics and OpticsSpectral linedescription
We present two- and three-dimensional model calculations of high-order harmonic generation in ${\mathrm{H}}_{2}^{+}.$ The harmonic spectra exhibit clear signatures of intramolecular interference. An interference minimum appears at a harmonic order that depends on the molecular orientation. Harmonic generation in three-center molecules is studied on the basis of two-dimensional calculations for a ${\mathrm{H}}_{3}^{2+}$ model system. From analytical considerations, the orientation dependence of the harmonic intensities in three-center molecules exhibits a double minimum due to intramolecular interference. In the numerical results, the double minimum is broadened into a single wide minimum. The effect of nonzero laser ellipticity on harmonic generation is investigated by means of two-dimensional simulations for ${\mathrm{H}}_{2}^{+}.$ We find that harmonic generation with elliptical polarization is governed by interference effects similar to linear polarization.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-02-01 | Physical Review A |