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Single-shot coherent control of molecular rotation by fs/ns rotational coherent anti-Stokes Raman spectroscopy

Hosseinnia, Ali LU orcid ; Raveesh, Meena LU ; Dominguez, Armand LU ; Ruchkina, Maria LU ; Linne, Mark LU and Bood, Joakim LU (2022) In Optics Express 30(18). p.32204-32214
Abstract

We present a novel method, to our knowledge, to control the shape of the spectra using 2-beam hybrid femtosecond (fs)/nanosecond (ns) coherent anti-Stokes Raman scattering (RCARS). The method is demonstrated experimentally and theoretically by utilizing a species-selective excitation approach via a field-free molecular alignment as an illustrative example. Two non-resonant fs laser pulses with proper delay selectively create and then annihilate N2 resonances in a binary mixture with O2 molecules. The RCARS signal is simultaneously resolved in spectral and temporal domains within a single-shot acquisition. The method requires very low pulse energies for excitation, hence minimizing multiphoton ionization... (More)

We present a novel method, to our knowledge, to control the shape of the spectra using 2-beam hybrid femtosecond (fs)/nanosecond (ns) coherent anti-Stokes Raman scattering (RCARS). The method is demonstrated experimentally and theoretically by utilizing a species-selective excitation approach via a field-free molecular alignment as an illustrative example. Two non-resonant fs laser pulses with proper delay selectively create and then annihilate N2 resonances in a binary mixture with O2 molecules. The RCARS signal is simultaneously resolved in spectral and temporal domains within a single-shot acquisition. The method requires very low pulse energies for excitation, hence minimizing multiphoton ionization probability, allowing for coherent control at various temperatures and pressures, with spectroscopic applications in non-stationary and unpredictable reacting flows.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Express
volume
30
issue
18
pages
11 pages
publisher
Optical Society of America
external identifiers
  • scopus:85137647520
  • pmid:36242287
ISSN
1094-4087
DOI
10.1364/OE.459396
language
English
LU publication?
yes
id
f915b3f7-a1ec-4ddd-9fbe-a98fb8dc2bb3
date added to LUP
2022-11-30 10:07:22
date last changed
2025-10-30 19:24:07
@article{f915b3f7-a1ec-4ddd-9fbe-a98fb8dc2bb3,
  abstract     = {{<p>We present a novel method, to our knowledge, to control the shape of the spectra using 2-beam hybrid femtosecond (fs)/nanosecond (ns) coherent anti-Stokes Raman scattering (RCARS). The method is demonstrated experimentally and theoretically by utilizing a species-selective excitation approach via a field-free molecular alignment as an illustrative example. Two non-resonant fs laser pulses with proper delay selectively create and then annihilate N<sub>2</sub> resonances in a binary mixture with O<sub>2</sub> molecules. The RCARS signal is simultaneously resolved in spectral and temporal domains within a single-shot acquisition. The method requires very low pulse energies for excitation, hence minimizing multiphoton ionization probability, allowing for coherent control at various temperatures and pressures, with spectroscopic applications in non-stationary and unpredictable reacting flows.</p>}},
  author       = {{Hosseinnia, Ali and Raveesh, Meena and Dominguez, Armand and Ruchkina, Maria and Linne, Mark and Bood, Joakim}},
  issn         = {{1094-4087}},
  language     = {{eng}},
  month        = {{08}},
  number       = {{18}},
  pages        = {{32204--32214}},
  publisher    = {{Optical Society of America}},
  series       = {{Optics Express}},
  title        = {{Single-shot coherent control of molecular rotation by fs/ns rotational coherent anti-Stokes Raman spectroscopy}},
  url          = {{http://dx.doi.org/10.1364/OE.459396}},
  doi          = {{10.1364/OE.459396}},
  volume       = {{30}},
  year         = {{2022}},
}