High-order-harmonic generation in benzene with linearly and circularly polarised laser pulses

Abstract

High harmonic generation in benzene is studied using a mixed quantum-classical approach in which the electrons are described using time-dependent density functional theory while the ions move classically. The interaction with both circularly and linearly polarised infra-red ($\lambda =800$ nm) laser pulses of duration 10 cycles (26.7 fs) is considered. The effect of allowing the ions to move is investigated as is the effect of including self-interaction corrections to the exchange-correlation functional. Our results for circularly polarised pulses are compared with previous calculations in which the ions were kept fixed and self-interaction corrections were not included while our results for linearly polarised pulses are compared with both previous calculations and experiment. We find that even for the short duration pulses considered here, the ionic motion greatly influences the harmonic spectra. While ionization and ionic displacements are greatest when linearly polarised pulses are used, the response to circularly polarised pulses is almost comparable, in agreement with previous experimental results.

References in corpus (5)

• Quantitative Rescattering Theory for high-order harmonic generation from molecules
• Recollisions and correlated double ionization with circularly polarized light
• Separation of Target Structure and Medium Propagation Effects in High-Harmonic Generation
• Analysis of effects of macroscopic propagation and multiple molecular orbitals on the minimum in high-order harmonic generation of aligned CO${}_2$
• Modelling the effect of nuclear motion on the attosecond time-resolved photoelectron spectra of ethylene

Cited by in corpus (6)

• Modeling tomographic measurements of photoelectron vortices in counter-rotating circularly polarized laser pulses
• High-order harmonic generation from highly-excited states in acetylene
• A Snapshot of Time-Dependent Density-Functional Theory
• Multielectron effects in strong-field ionization of benzene derivatives
• Influence of coherent vibronic excitation on the high harmonics generation of diatomic molecules
• Probing the role of excited states in ionization of acetylene