Orientation-dependent ionization yields from strong-field ionization of fixed-in-space linear and asymmetric top molecules

Abstract

The yield of strong-field ionization, by a linearly polarized probe pulse, is studied experimentally and theoretically, as a function of the relative orientation between the laser field and the molecule. Experimentally, carbonyl sulfide, benzonitrile and naphthalene molecules are aligned in one or three dimensions before being singly ionized by a 30 fs laser pulse centered at 800 nm. Theoretically, we address the behaviour of these three molecules. We consider the degree of alignment and orientation and model the angular dependence of the total ionization yield by molecular tunneling theory accounting for the Stark shift of the energy level of the ionizing orbital. For naphthalene and benzonitrile the orientational dependence of the ionization yield agrees well with the calculated results, in particular the observation that ionization is maximized when the probe laser is polarized along the most polarizable axis. For OCS the observation of maximum ionization yield when the probe is perpendicular to the internuclear axis contrasts the theoretical results.

14 pages, 4 figures

References in corpus (7)

• Photoelectron angular distributions from strong-field ionization of oriented molecules
• Laser-induced alignment and orientation of quantum-state-selected large molecules
• Alignment-Dependent Ionization of N${}_2$, O${}_2$, and CO${}_2$ in Intense Laser Fields
• Quantum-state selection, alignment, and orientation of large molecules using static electric and laser fields
• Ionization of oriented carbonyl-sulfide molecules by intense circularly polarized laser pulses
• Ionization of 1D and 3D oriented asymmetric top molecules by intense circularly polarized femtosecond laser pulses
• Stark-selected beam of ground-state OCS molecules characterized by revivals of impulsive alignment

Cited by in corpus (14)

• Manipulation of Molecules with Electromagnetic Fields
• Ab-initio angle and energy resolved photoelectron spectroscopy with time-dependent density-functional theory
• Time-dependent generalized-active-space configuration-interaction approach to photoionization dynamics of atoms and molecules
• Long-lasting field-free alignment of large molecules inside helium nanodroplets
• Atomic and molecular dynamics triggered by ultrashort light pulses on the atto- to picosecond time scale
• Strong Differential Photoion Circular Dichroism in Strong-Field Ionization of Chiral Molecules
• Non-adiabatic effects in long-pulse mixed-field orientation of a linear polar molecule
• Geometric Dependence of Strong Field Enhanced Ionization in D${}_2$O
• Multielectron effects in strong-field ionization of oriented OCS
• All-Electron, Density Functional-Based Method for Angle-Resolved Tunneling Ionization in the Adiabatic Regime
• Multielectron effect in the strong-field ionization of aligned nonpolar molecules
• Velocity map imaging with non-uniform detection: quantitative molecular axis alignment measurements via Coulomb explosion imaging
• Multielectron effects in strong-field ionization of benzene derivatives
• Strong-field ionization and AC-Stark shifted Rydberg states in OCS