High-order harmonic generation from C₂₀ isomers

2022/03/29 by F. Cajiao - Vélez, Vélez, F. Cajiao -, A. Jaron +1
Chemistry · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Laser-Matter Interactions and Applications #Photochemistry and Electron Transfer Studies #Quantum Physics (quant-ph) #Spectroscopy and Quantum Chemical Studies

paper · pdf · doi:10.48550/arxiv.2203.15933

openalex publication_date 2022/03/29 · openalex created_date 2022/04/03 · openalex updated_date 2026/07/28

Abstract

High-order harmonic responses from three C₂₀ isomers: fullerene, ring, and bowl, are calculated within the modified Lewenstein model for molecular systems. Spectra for all three structures exhibit intense modulations of the harmonic spectrum along the plateau and some of them can be interpreted as a consequence of multi-center interference effects. Each structure shows characteristic modulation patterns in peak harmonic intensities, which are directly related to zeroes in the recombination matrix element as a function of the three components of momentum. Different C₂₀ isomers lead to different harmonic polarizations depending on the geometric configuration of carbon atoms and molecular orientation.

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