Photoelectron circular dichroism of chiral molecules studied with a continuum-state-corrected strong-field approximation

Dreissigacker, Ingo; Lein, Manfred

doi:10.1103/physreva.89.053406

Cited by 51 publications

(62 citation statements)

References 39 publications

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“…For instance, this HHG process offers an ideal framework for the study of strong-field dynamics [37]. Moreover, as the CPLP has already shown its great power in the application of (one-shot) imaging or structure detection of molecules [39][40][41][42], the HHG by CPLP can be potentially utilized for the imaging and detection of molecules with an all-optical method.…”

Section: Discussionmentioning

confidence: 99%

“…It is found that the higher efficiency is mainly contributed in the recombination step and is at least partly due to the higher recollision probability for molecules. Since this HHG process involves the unique recollision mechanism under a circularly polarized laser field, it will stimulate new potential applications, such as offering an ideal framework for study of strong-field dynamics [37] and (one-shot) imaging or structure detection of molecules with all optical methods [39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

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Molecular high-order-harmonic generation due to the recollision mechanism by a circularly polarized laser pulse

et al. 2015

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High-order-harmonic generation (HHG) from small linear molecules driven by a circularly polarized laser pulse (CPLP) is investigated. It is found that the obtained high-order harmonics are more pronounced than those from reference atoms with equal ionization potential driven by the same CPLP. By analyzing the dependence of the cutoff position on laser parameters and calculating the recollision trajectories, it is shown that this molecular HHG originates from the recollision mechanism, instead of the bound-bound transition mechanism found to be responsible for molecular HHG by CPLP in earlier works. A semiclassical model is used to analyze the HHG process and discuss the origin of the higher efficiency of molecular HHG. It is found that the higher HHG efficiency for molecules is mainly contributed in the recombination step and at least partly due to the higher recollision probability of continuum electrons.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular high-order-harmonic generation due to the recollision mechanism by a circularly polarized laser pulse

et al. 2015

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“…and for comparison to theoretical simulations [37,68] (see below), we average the coefficients from ionization with LCP and RCP light (see Table 2). Table 1 …”

Section: Quantification Of Multiphoton Pecd On the Camphor Prototypementioning

confidence: 99%

Photoelectron Circular Dichroism of Bicyclic Ketones from Multiphoton Ionization with Femtosecond Laser Pulses

et al. 2014

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Photoelectron circular dichroism (PECD) is a CD effect up to the ten-percent regime and shows contributions from higher-order Legendre polynomials when multiphoton ionization is compared to single-photon ionization. We give a full account of our experimental methodology for measuring the multiphoton PECD and derive quantitative measures that we apply on camphor, fenchone and norcamphor. Different modulations and amplitudes of the contributing Legendre polynomials are observed despite the similarity in chemical structure. In addition, we study PECD for elliptically polarized light employing tomographic reconstruction methods. Intensity studies reveal dissociative ionization as the origin of the observed PECD effect, whereas ionization of the intermediate resonance is dominating the signal. As a perspective, we suggest to make use of our tomographic data as an experimental basis for a complete photoionization experiment and give a prospect of PECD as an analytic tool.

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“…Indeed, in the past some of us 34,36,40 and other authors 35 published some data for these molecules but, because of technical SR light source limitations at the time, there were uncovered regions of the spectrum -notably in the crucial 10 to 15 eV photon energy range for which theoretical models 36,41 predict large oscillations of b1. The benchmarking of theory versus experiment, in this specific range, with very accurate data obtained with a state--of--the--art double imaging electron/ion coincidence (i 2 PEPICO) spectrometer set--up and quasi--perfect CPL is the second motivation of the present study, especially in a context where multi--photon/high field PECD modeling has just been initiated on these showcase molecules 42,43 . The precision of the measurements we provide are such that departures from perfect enantiopurity in the sample we purchased could be detected, quantified, and corrections applied to the measured b1 parameter, all perfectly corroborated by an independent analysis performed via chromatographic techniques.…”

Section: Introductionmentioning

confidence: 99%

Determination of accurate electron chiral asymmetries in fenchone and camphor in the VUV range: sensitivity to isomerism and enantiomeric purity

Nahon

Nag

Garcia

et al. 2016

Phys. Chem. Chem. Phys.

122

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Ivan (2016) Determination of accurate electron chiral asymmetries in fenchone and camphor in the VUV range: sensitivity to isomerism and enantiomeric purity. Physical Chemistry Chemical Physics . ISSN 1463-9084 Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/32734/1/PECD_PCCP2016_Accepted_manuscript.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the University of Nottingham End User licence and may be reused according to the conditions of the licence. For more details see: http://eprints.nottingham.ac.uk/end_user_agreement.pdf A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk This is an Accepted Manuscript, which has been through the Royal Society of Chemistry peer review process and has been accepted for publication.Accepted Manuscripts are published online shortly after acceptance, before technical editing, formatting and proof reading. Using this free service, authors can make their results available to the community, in citable form, before we publish the edited article. We will replace this Accepted Manuscript with the edited and formatted Advance Article as soon as it is available.You can find more information about Accepted Manuscripts in the Information for Authors.Please note that technical editing may introduce minor changes to the text and/or graphics, which may alter content. Photoelectron circular dichroism (PECD) manifests itself as an intense forward/backward asymmetry in the angular distribution of photoelectrons produced from randomly--oriented enantiomers by photoionization with circularly--polarized light (CPL). As a sensitive probe of both photoionization dynamics and of the chiral molecular potential, PECD attracts much interest especially with the recent performance of related experiments with visible and VUV laser sources. Here we report, by use of quasi--perfect CPL VUV synchrotron radiation and using a double imaging photoelectron/photoion coincidence (i 2 PEPICO) spectrometer, new and very accurate values of the corresponding asymmetries on showcase chiral isomers: camphor and fenchone. These data have additionally been normalized to the absolute enantiopurity of the sample as measured by a chromatographic technique. They can therefore be used as benchmarking data for new PECD experiments, as well as for theoretical models. In particular we found, especially for the outermost orbital of both molecules, a good agreement with CMS--Xα PECD modeling over the whole VUV range. We also report a spectacular sensitivity of PECD to isomerism for slow electrons, ...

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Photoelectron circular dichroism of chiral molecules studied with a continuum-state-corrected strong-field approximation

Cited by 51 publications

References 39 publications

Molecular high-order-harmonic generation due to the recollision mechanism by a circularly polarized laser pulse

Molecular high-order-harmonic generation due to the recollision mechanism by a circularly polarized laser pulse

Photoelectron Circular Dichroism of Bicyclic Ketones from Multiphoton Ionization with Femtosecond Laser Pulses

Determination of accurate electron chiral asymmetries in fenchone and camphor in the VUV range: sensitivity to isomerism and enantiomeric purity

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