Abstract

We present theoretical calculations for polarization and ellipticity of high-order harmonics from aligned N₂, CO₂, and O₂ 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.

Department(s)

Physics

Keywords and Phrases

Aligned Molecules; Electron Wave Packet; High Order Harmonics; Intense Laser Pulse; Linearly Polarized; Linearly Polarized Lasers; Polarization Amplitudes; Polarization Ellipse; Polarization State; Rescattering Model; Theoretical Calculations, Harmonic Analysis; Molecules; Pulsed Laser Applications, Polarization

International Standard Serial Number (ISSN)

1050-2947

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2010 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

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