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Simultaneous temporally and spectrally resolved Raman coherences with single-shot fs/ns rotational CARS

Hosseinnia, Ali LU orcid ; Ruchkina, Maria LU ; Ding, Pengji LU orcid ; Bengtsson, Per Erik LU orcid and Bood, Joakim LU (2020) In Optics Letters 45(2). p.308-311
Abstract

A novel technique for studies of the dynamics of molecular coherences has been developed. The concept is based on prompt excitation using broadband femtosecond (fs) laser pulses, whereupon a narrowband nanosecond (ns) laser pulse probes the fast dynamics of the coherences. Detection of the spectrally dispersed coherent signal using a streak camera allows simultaneous spectrally and temporally resolved studies of all excited coherences in a single-shot acquisition. Here we demonstrate the high capacity and versatility of this hybrid fs/ns coherent anti-Stokes Raman scattering (CARS) technique through some illustrative examples, all single-shot measurements, namely time-resolved studies of rotational Raman coherences in nitrogen and air,... (More)

A novel technique for studies of the dynamics of molecular coherences has been developed. The concept is based on prompt excitation using broadband femtosecond (fs) laser pulses, whereupon a narrowband nanosecond (ns) laser pulse probes the fast dynamics of the coherences. Detection of the spectrally dispersed coherent signal using a streak camera allows simultaneous spectrally and temporally resolved studies of all excited coherences in a single-shot acquisition. Here we demonstrate the high capacity and versatility of this hybrid fs/ns coherent anti-Stokes Raman scattering (CARS) technique through some illustrative examples, all single-shot measurements, namely time-resolved studies of rotational Raman coherences in nitrogen and air, dynamics of Stark effect on rotational lines, and beating phenomena originating from close-lying rotational lines.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
45
issue
2
pages
4 pages
publisher
Optical Society of America
external identifiers
  • scopus:85077807773
ISSN
0146-9592
DOI
10.1364/OL.380247
language
English
LU publication?
yes
id
fb7b4a18-b1ee-4351-b2ce-a3ec27b49372
date added to LUP
2020-01-24 12:39:15
date last changed
2023-04-10 06:57:53
@article{fb7b4a18-b1ee-4351-b2ce-a3ec27b49372,
  abstract     = {{<p>A novel technique for studies of the dynamics of molecular coherences has been developed. The concept is based on prompt excitation using broadband femtosecond (fs) laser pulses, whereupon a narrowband nanosecond (ns) laser pulse probes the fast dynamics of the coherences. Detection of the spectrally dispersed coherent signal using a streak camera allows simultaneous spectrally and temporally resolved studies of all excited coherences in a single-shot acquisition. Here we demonstrate the high capacity and versatility of this hybrid fs/ns coherent anti-Stokes Raman scattering (CARS) technique through some illustrative examples, all single-shot measurements, namely time-resolved studies of rotational Raman coherences in nitrogen and air, dynamics of Stark effect on rotational lines, and beating phenomena originating from close-lying rotational lines.</p>}},
  author       = {{Hosseinnia, Ali and Ruchkina, Maria and Ding, Pengji and Bengtsson, Per Erik and Bood, Joakim}},
  issn         = {{0146-9592}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{308--311}},
  publisher    = {{Optical Society of America}},
  series       = {{Optics Letters}},
  title        = {{Simultaneous temporally and spectrally resolved Raman coherences with single-shot fs/ns rotational CARS}},
  url          = {{http://dx.doi.org/10.1364/OL.380247}},
  doi          = {{10.1364/OL.380247}},
  volume       = {{45}},
  year         = {{2020}},
}