Abstract

The Cooper minimum (CM) has been studied using high harmonic generation solely in atoms. Here, we present detailed experimental and theoretical studies on the CM in molecules probed by high harmonic generation using a range of near-infrared light pulses from λ = 1.3 to 1.8 µm. We demonstrate the CM to occur in CS₂ and CCl₄ at ~42 and ~40 eV, respectively, by comparing the high harmonic spectra with the known partial photoionization cross sections of different molecular orbitals, confirmed by theoretical calculations of harmonic spectra. We use CM to probe electron localization in Cl-containing molecules (CCl₄, CH₂Cl₂, and trans-C₂H₂Cl₂) and show that the position of the minimum is influenced by the molecular environment.

Department(s)

Physics

Keywords and Phrases

Cooper Minima; Electron Localizations; Harmonic Spectrum; High Harmonic Generation; High Harmonics; Molecular Environment; Near Infrared Light; Partial Photoionization; Theoretical Calculations; Theoretical Study, Molecular Orbitals, Molecules

International Standard Serial Number (ISSN)

0031-9007

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2013 American Physical Society (APS), All rights reserved.

PubMed ID

23373923

Included in

Physics Commons

Share

 
COinS