Origin and implication of ellipticity in high-order harmonic generation from aligned molecules

Ramakrishna Sesha Shankar*, Paul A.J. Sherratt, Anthony D. Dutoi, Tamar Seideman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

We address theoretically and numerically the possibility of observing ellipticity in high-order harmonic generation (HHG) from aligned molecules driven by linearly polarized fields-a subject of controversy in the recent literature with significant implications. To that end we develop a numerical method for solution of the electronic dynamics and extend a recently developed theory of HHG from aligned molecules. Our numerical results are in good agreement with recent experimental data. The theory explains analytically several observations of polarization experiments. We note the conditions under which ellipticity can be observed and the information content of elliptically polarized harmonics regarding the molecular system.

Original languageEnglish (US)
Article number021802
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume81
Issue number2
DOIs
StatePublished - Feb 10 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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