Tomography of asymmetric molecular orbitals with one-color inhomogeneous field

TL;DR

This paper introduces a method to image asymmetric molecular orbitals using high-order harmonic generation driven by a one-color inhomogeneous field, enabling reconstruction of orbitals without strict laser conditions.

Contribution

It presents a novel approach utilizing inhomogeneous fields to reconstruct asymmetric molecular orbitals, relaxing laser requirements and applicable to various molecules.

Findings

Successfully reconstructed CO molecular orbital.

Demonstrated the effectiveness of inhomogeneous fields in orbital imaging.

Enhanced the feasibility of orbital tomography with relaxed laser conditions.

Abstract

We demonstrate to image asymmetric molecular orbitals via high-order harmonic generation in a one-color inhomogeneous field. Due to the broken inversion symmetry of the inhomogeneous field in space, the returning electrons with energy in a broad range can be forced to recollide from only one direction for all the orientation angles of molecules, which therefore can be used to reconstruct asymmetric molecular orbitals. Following the procedure of molecular orbital tomography, the highest occupied molecular orbital of CO is satisfactorily reconstructed with high-order harmonic spectra driven by the inhomogeneous field. This scheme is helpful to relax the requirement of laser conditions and also applicable to other asymmetric molecules.