# High-order harmonic generation in polyatomic molecules induced by a bicircular laser field

@article{Odvzak2016HighorderHG, title={High-order harmonic generation in polyatomic molecules induced by a bicircular laser field}, author={Senad Odvzak and Elvedin Hasovi'c and Dejan B. Milovsevi'c}, journal={Physical Review A}, year={2016}, volume={94}, pages={033419} }

High-order harmonic generation by a bicircular field, which consists of two coplanar counter-rotating circularly polarized fields of frequency $r\omega$ and $s\omega$ ($r$ and $s$ are integers), is investigated for a polyatomic molecule. This field possesses dynamical symmetry, which can be adjusted to the symmetry of the molecular Hamiltonian and used to investigate the molecular symmetry. For polyatomic molecules having the $C_{r+s}$ symmetry only the harmonics $n=q(r+s)\pm r$, $q=1,2,\ldots…

## 29 Citations

Molecules in a bicircular strong laser field

- Physics, Chemistry
- 2018

Strong-field ionization of nonlinear planar triatomic molecules by a bicircular laser field is analyzed within the improved molecular strong-field approximation. Our calculations include additional…

High-order harmonic generation by planar polyatomic molecules exposed to an orthogonally polarized two-color laser field

- PhysicsJournal of Physics B: Atomic, Molecular and Optical Physics
- 2021

The molecular strong-field approximation is employed to study high-order harmonic generation by linear and planar polyatomic molecules exposed to an orthogonally polarized two-color laser field,…

High-order harmonic generation in non-planar molecules driven by a bicircular field

- Physics
- 2017

ABSTRACT We investigate high-order harmonic generation of non-planar ammonia molecules by a bicircular field, which consists of two coplanar counter-rotating circularly polarised fields of…

High-order harmonic generation from
H2+
irradiated by a co-rotating two-color circularly polarized laser field

- PhysicsPhysical Review A
- 2019

The high-order harmonic generation process of ${\mathrm{H}}_{2}{}^{+}$ in a co-rotating two-color circularly polarized laser pulse was investigated by numerically solving the time-dependent…

Probing atomic and molecular targets by intense bicircular counter-rotating laser fields

- PhysicsJournal of Physics B: Atomic, Molecular and Optical Physics
- 2018

We present an ab initio study of strong-field ionization of H and H 2 + by two-colour bicircular counter-rotating 1ω–2ω laser pulses containing two and ten optical cycles at the fundamental frequency…

Ellipticity of High-Order Harmonics Generated by Aligned Homonuclear Diatomic Molecules Exposed to an Orthogonal Two-Color Laser Field

- PhysicsPhotonics
- 2020

We investigate emission rate and ellipticity of high-order harmonics generated exposing a homonuclear diatomic molecule, aligned in the laser-field polarization plane, to a strong orthogonally…

Time-resolved high harmonic spectroscopy of dynamical symmetry breaking in bi-circular laser fields: the role of Rydberg states.

- PhysicsOptics express
- 2017

It is demonstrated that when the second harmonic either precedes or is more intense than the fundamental field, the weak effects of dynamical symmetry breaking caused by finite pulse duration are amplified by electrons trapped in Rydberg orbits (i.e., Freeman resonances), and that the forbidden harmonic lines are a witness of this.

Revealing dynamical symmetries by bicircular high-harmonic spectroscopy beyond the Born-Oppenheimer approximation

- Physics
- 2020

We explore the possibility of bicircular high-harmonic spectroscopy to probe the laser-induced dynamics of molecules in a non-Born-Oppenheimer treatment. The numerical solutions of the timedependent…

Probing dynamical symmetries by bicircular high-order harmonic spectroscopy beyond the Born-Oppenheimer approximation

- Materials SciencePhysical Review A
- 2020

We explore the possibility of bicircular high-order harmonic spectroscopy to probe the laser-induced dynamics of molecules in a non-Born-Oppenheimer treatment. The numerical solutions of the…

Atomic and Molecular Processes in a Strong Bicircular Laser Field

- PhysicsAtoms
- 2018

With the development of intense femtosecond laser sources it has become possible to study atomic and molecular processes on their own subfemtosecond time scale. Table-top setups are available that…

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