---
_id: '14002'
abstract:
- lang: eng
  text: The advancement of attosecond chronoscopy has made it possible to reveal ultrashort
    time dynamics of photoionization [1]. Ionization delay measurements in atomic
    targets provide a wealth of information about the timing of the photoelectric
    effect [2], resonances, electron correlations and transport. The extension of
    this approach to molecules, however, presents great challenges. In addition to
    the difficulty of identifying correct ionization channels, it is hard to disentangle
    the role of the anisotropic molecular landscape from the delays inherent to the
    excitation process itself. Here, we present the measurements of ionization delays
    from ethyl iodide around the 4d giant dipole resonance of iodine. We employ attosecond
    streaking spectroscopy, which enables to disentangle the contribution to the delay
    from the functional ethyl group, being responsible for the characteristic chemical
    reactivity of the molecule. An attosecond extreme ultraviolet (XUV) pulse ionizes
    the molecule around the energy of the giant resonance and the released electron
    is exposed to the ponderomotive force of a synchronized near-infrared (NIR) field,
    which yields a streaking spectrogram (see figure). Comparative phase analysis
    of the spectrograms corresponding to iodine 4d and neon 2p emission permits extracting
    overall photoemission delays for ethyl iodide. The data is recorded for multiple
    photon energies around the iodine 4d resonance and compared to classical Wigner
    propagation [3] and quantum scattering [4] calculations. Here the outgoing electron,
    produced via inner shell ionization of the iodine atom in ethyl iodide, and thereby
    hardly influenced by the molecular potential during the birth process, acquires
    the necessary information about the influence of the functional ethyl group during
    its propagation. We find significant delay contributions that can distinguish
    between different functional groups, providing a sensitive probe of the local
    molecular environment [5]. This would stimulate to perform further angle resolved
    measurements in molecules to probe the potential landscape in three dimension.
article_number: '8871819'
article_processing_charge: No
author:
- first_name: Shubhadeep
  full_name: Biswas, Shubhadeep
  last_name: Biswas
- first_name: I.
  full_name: Liontos, I.
  last_name: Liontos
- first_name: A. M.
  full_name: Kamal, A. M.
  last_name: Kamal
- first_name: N. G.
  full_name: Kling, N. G.
  last_name: Kling
- first_name: A. F.
  full_name: Alharbi, A. F.
  last_name: Alharbi
- first_name: M.
  full_name: Alharbi, M.
  last_name: Alharbi
- first_name: A. M.
  full_name: Azzeer, A. M.
  last_name: Azzeer
- first_name: H. J.
  full_name: Worner, H. J.
  last_name: Worner
- first_name: A. S.
  full_name: Landsman, A. S.
  last_name: Landsman
- first_name: M. F.
  full_name: Kling, M. F.
  last_name: Kling
- first_name: B.
  full_name: Forg, B.
  last_name: Forg
- first_name: J.
  full_name: Schotz, J.
  last_name: Schotz
- first_name: W.
  full_name: Schweinberger, W.
  last_name: Schweinberger
- first_name: L.
  full_name: Ortmann, L.
  last_name: Ortmann
- first_name: T.
  full_name: Zimmermann, T.
  last_name: Zimmermann
- first_name: L.-W.
  full_name: Pi, L.-W.
  last_name: Pi
- first_name: Denitsa Rangelova
  full_name: Baykusheva, Denitsa Rangelova
  id: 71b4d059-2a03-11ee-914d-dfa3beed6530
  last_name: Baykusheva
- first_name: H. A.
  full_name: Masood, H. A.
  last_name: Masood
citation:
  ama: 'Biswas S, Liontos I, Kamal AM, et al. Probing molecular influence on photoemission
    delays. In: <i>2019 Conference on Lasers and Electro-Optics Europe &#38; European
    Quantum Electronics Conference</i>. Institute of Electrical and Electronics Engineers;
    2019. doi:<a href="https://doi.org/10.1109/cleoe-eqec.2019.8871819">10.1109/cleoe-eqec.2019.8871819</a>'
  apa: 'Biswas, S., Liontos, I., Kamal, A. M., Kling, N. G., Alharbi, A. F., Alharbi,
    M., … Masood, H. A. (2019). Probing molecular influence on photoemission delays.
    In <i>2019 Conference on Lasers and Electro-Optics Europe &#38; European Quantum
    Electronics Conference</i>. Munich, Germany: Institute of Electrical and Electronics
    Engineers. <a href="https://doi.org/10.1109/cleoe-eqec.2019.8871819">https://doi.org/10.1109/cleoe-eqec.2019.8871819</a>'
  chicago: Biswas, Shubhadeep, I. Liontos, A. M. Kamal, N. G. Kling, A. F. Alharbi,
    M. Alharbi, A. M. Azzeer, et al. “Probing Molecular Influence on Photoemission
    Delays.” In <i>2019 Conference on Lasers and Electro-Optics Europe &#38; European
    Quantum Electronics Conference</i>. Institute of Electrical and Electronics Engineers,
    2019. <a href="https://doi.org/10.1109/cleoe-eqec.2019.8871819">https://doi.org/10.1109/cleoe-eqec.2019.8871819</a>.
  ieee: S. Biswas <i>et al.</i>, “Probing molecular influence on photoemission delays,”
    in <i>2019 Conference on Lasers and Electro-Optics Europe &#38; European Quantum
    Electronics Conference</i>, Munich, Germany, 2019.
  ista: 'Biswas S, Liontos I, Kamal AM, Kling NG, Alharbi AF, Alharbi M, Azzeer AM,
    Worner HJ, Landsman AS, Kling MF, Forg B, Schotz J, Schweinberger W, Ortmann L,
    Zimmermann T, Pi L-W, Baykusheva DR, Masood HA. 2019. Probing molecular influence
    on photoemission delays. 2019 Conference on Lasers and Electro-Optics Europe &#38;
    European Quantum Electronics Conference. CLEO: European Conference on Lasers and
    Electro-Optics, 8871819.'
  mla: Biswas, Shubhadeep, et al. “Probing Molecular Influence on Photoemission Delays.”
    <i>2019 Conference on Lasers and Electro-Optics Europe &#38; European Quantum
    Electronics Conference</i>, 8871819, Institute of Electrical and Electronics Engineers,
    2019, doi:<a href="https://doi.org/10.1109/cleoe-eqec.2019.8871819">10.1109/cleoe-eqec.2019.8871819</a>.
  short: S. Biswas, I. Liontos, A.M. Kamal, N.G. Kling, A.F. Alharbi, M. Alharbi,
    A.M. Azzeer, H.J. Worner, A.S. Landsman, M.F. Kling, B. Forg, J. Schotz, W. Schweinberger,
    L. Ortmann, T. Zimmermann, L.-W. Pi, D.R. Baykusheva, H.A. Masood, in:, 2019 Conference
    on Lasers and Electro-Optics Europe &#38; European Quantum Electronics Conference,
    Institute of Electrical and Electronics Engineers, 2019.
conference:
  end_date: 2019-06-27
  location: Munich, Germany
  name: 'CLEO: European Conference on Lasers and Electro-Optics'
  start_date: 2019-06-23
date_created: 2023-08-09T13:10:49Z
date_published: 2019-10-17T00:00:00Z
date_updated: 2023-08-22T09:32:56Z
day: '17'
doi: 10.1109/cleoe-eqec.2019.8871819
extern: '1'
language:
- iso: eng
month: '10'
oa_version: None
publication: 2019 Conference on Lasers and Electro-Optics Europe & European Quantum
  Electronics Conference
publication_identifier:
  eisbn:
  - '9781728104690'
  isbn:
  - '9781728104706'
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
scopus_import: '1'
status: public
title: Probing molecular influence on photoemission delays
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2019'
...