---
_id: '14020'
abstract:
- lang: eng
  text: We report the observation of macroscopic field-free orientation, i.e., more
    than 73% of CO molecules pointing in the same direction. This is achieved through
    an all-optical scheme operating at high particle densities (>10(17)  cm(-3)) that
    combines one-color (ω) and two-color (ω+2ω) nonresonant femtosecond laser pulses.
    We show that the achieved orientation solely relies on the hyperpolarizability
    interaction as opposed to an ionization-depletion mechanism, thus, opening a wide
    range of applications. The achieved strong orientation enables us to reveal the
    molecular-frame anisotropies of the photorecombination amplitudes and phases caused
    by a shape resonance. The resonance appears as a local maximum in the even-harmonic
    emission around 28 eV. In contrast, the odd-harmonic emission is suppressed in
    this spectral region through the combined effects of an asymmetric photorecombination
    phase and a subcycle Stark effect, generic for polar molecules, that we experimentally
    identify.
article_number: '023001'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: P. M.
  full_name: Kraus, P. M.
  last_name: Kraus
- first_name: Denitsa Rangelova
  full_name: Baykusheva, Denitsa Rangelova
  id: 71b4d059-2a03-11ee-914d-dfa3beed6530
  last_name: Baykusheva
- first_name: H. J.
  full_name: Wörner, H. J.
  last_name: Wörner
citation:
  ama: Kraus PM, Baykusheva DR, Wörner HJ. Two-pulse field-free orientation reveals
    anisotropy of molecular shape resonance. <i>Physical Review Letters</i>. 2014;113(2).
    doi:<a href="https://doi.org/10.1103/physrevlett.113.023001">10.1103/physrevlett.113.023001</a>
  apa: Kraus, P. M., Baykusheva, D. R., &#38; Wörner, H. J. (2014). Two-pulse field-free
    orientation reveals anisotropy of molecular shape resonance. <i>Physical Review
    Letters</i>. American Physical Society. <a href="https://doi.org/10.1103/physrevlett.113.023001">https://doi.org/10.1103/physrevlett.113.023001</a>
  chicago: Kraus, P. M., Denitsa Rangelova Baykusheva, and H. J. Wörner. “Two-Pulse
    Field-Free Orientation Reveals Anisotropy of Molecular Shape Resonance.” <i>Physical
    Review Letters</i>. American Physical Society, 2014. <a href="https://doi.org/10.1103/physrevlett.113.023001">https://doi.org/10.1103/physrevlett.113.023001</a>.
  ieee: P. M. Kraus, D. R. Baykusheva, and H. J. Wörner, “Two-pulse field-free orientation
    reveals anisotropy of molecular shape resonance,” <i>Physical Review Letters</i>,
    vol. 113, no. 2. American Physical Society, 2014.
  ista: Kraus PM, Baykusheva DR, Wörner HJ. 2014. Two-pulse field-free orientation
    reveals anisotropy of molecular shape resonance. Physical Review Letters. 113(2),
    023001.
  mla: Kraus, P. M., et al. “Two-Pulse Field-Free Orientation Reveals Anisotropy of
    Molecular Shape Resonance.” <i>Physical Review Letters</i>, vol. 113, no. 2, 023001,
    American Physical Society, 2014, doi:<a href="https://doi.org/10.1103/physrevlett.113.023001">10.1103/physrevlett.113.023001</a>.
  short: P.M. Kraus, D.R. Baykusheva, H.J. Wörner, Physical Review Letters 113 (2014).
date_created: 2023-08-10T06:38:38Z
date_published: 2014-07-11T00:00:00Z
date_updated: 2023-08-22T09:02:56Z
day: '11'
doi: 10.1103/physrevlett.113.023001
extern: '1'
external_id:
  arxiv:
  - '1311.3923'
  pmid:
  - '25062172'
intvolume: '       113'
issue: '2'
keyword:
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1311.3923
month: '07'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review Letters
publication_identifier:
  eissn:
  - 1079-7114
  issn:
  - 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Two-pulse field-free orientation reveals anisotropy of molecular shape resonance
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 113
year: '2014'
...