Steering of circular dichroism in biharmonic ionization of atoms

Volotka, A. V.; Hofbrucker, J.; Fritzsche, S.

doi:10.1103/physreva.104.l031103

Cited by 7 publications

(5 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15, which has initiated many subsequent studies. 16–20 In the present paper we consider CDAD, more precisely elliptic dichroism (EDAD) in strong-field ionization and, in particular, in above-threshold ionization (ATI) and high-order above-threshold ionization (HATI).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Elliptic dichroism in strong-field ionization of atoms subjected to tailored laser fields

Becker

Milošević

2022

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…More recently, circular dichroism in biharmonic ionization of atoms was investigated in ref. 20. Another example of a tailored field is the OTC field, which consists of two linearly polarized components with orthogonal polarizations and commensurable frequencies.…”

Section: Introductionmentioning

confidence: 99%

Elliptic dichroism in strong-field ionization of atoms subjected to tailored laser fields

Becker

Milošević

2022

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…The elliptical dichroism appears in the laser-field polarization plane with a nonchiral target and is absent in the propagation direction. The asymmetry of this kind, in the ATI spectra, was first reported in ref , after which many subsequent studies began. − …”

Section: Introductionmentioning

confidence: 81%

Elliptic Dichroism in the Above-Threshold Ionization of Molecules Induced by a Strong Laser Field

Habibović,

Gazibegović-Busuladžić,

Busuladžić

et al. 2023

J. Phys. Chem. A

View full text Add to dashboard Cite

Using a strong-field-approximation theory, we investigate the high-order above-threshold ionization of diatomic molecules exposed to the monochromatic and bichromatic elliptically polarized fields. We devote particular attention to the difference between the photoelectron momentum distributions obtained with fields with opposite helicity. This difference is quantified using the elliptic-dichroism parameter, which represents the normalized difference between the differential ionization rates calculated with driving fields with opposite helicity. We find that this parameter strongly depends on the molecular orientation with respect to the laser field. In addition, this dependence is different for molecules with different types of highest-occupied molecular orbital. In other words, we show that the molecular structure is imprinted onto the elliptic-dichroism parameter for both monochromatic and bichromatic driving fields. This is explained by analyzing the interferences between various partial contributions to the differential ionization rate. In this way, elliptic dichroism also serves as a tool to analyze the electron dynamics. Finally, for heteronuclear diatomic molecules, we show that the elliptic dichroism is different from zero even for the direct electrons, i.e., the electrons that after liberation go directly to the detector. In this case, the dependence on the molecular orientation is far more pronounced for a bichromatic driving field.

show abstract

“…Nonsequential double ionization was considered in [20,21]. More recently, in [22] the single and double ionization of helium in bicircular field was analyzed with a classical ensemble method, while the circular dichroism in photoelectron angular distributions was explored in [23] using an analytical description. The subcycle interference was analyzed in [24] and the phase-of-the-phase spectroscopy was applied to strong-field ionization by bicircular field in [25].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of the molecular above-threshold ionization by a bichromatic elliptically polarized field with co-rotating components

Habibović

Gazibegović-Busuladžić

Busuladžić

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

We address ionization of a diatomic molecule by a bichromatic elliptically polarized ﬁeld with co-rotating components. Using the strong-ﬁeld approximation we investigate symmetry properties of the photoelectron momentum distribution and explore the minima which appear in the photoelectron spectra. We distinguish two types of minima: (i) two-center interference minima which appear due to the destructive interference of the contributions of two electron wave packets emitted from the two centers of the diatomic molecule and (ii) the one-center minima which are caused by the interference of the parts of the wave packet emitted from the same atomic center at diﬀerent times. The position of the two-center interference minima depends on the molecular orientation. When a molecular orbital is modelled using the atomic orbitals of a speciﬁc parity, the position of the two-center interference minima does not depend on the ellipticity of our driving ﬁeld. However, when a molecular orbital consists of both odd and even atomic orbitals the interference of their contributions and the position of the minima depend on the ellipticity. The position of the interference minima in the photoelectron momentum plane is conﬁrmed using the saddle-point method. The position and the number of the one-center minima do not depend on the molecular orientation, but they strongly depend on the ellipticity of the ﬁeld components. Finally, comparing the photoelectron spectra of the CO molecule with the spectra of homonuclear molecules and the NO molecule we show that the electron probability density distribution plays a signiﬁcant role for the high-energy rescattered electrons.

show abstract

Steering of circular dichroism in biharmonic ionization of atoms

Cited by 7 publications

References 42 publications

Elliptic dichroism in strong-field ionization of atoms subjected to tailored laser fields

Elliptic dichroism in strong-field ionization of atoms subjected to tailored laser fields

Elliptic Dichroism in the Above-Threshold Ionization of Molecules Induced by a Strong Laser Field

Characteristics of the molecular above-threshold ionization by a bichromatic elliptically polarized field with co-rotating components

Contact Info

Product

Resources

About