Simultaneous temporally and spectrally resolved Raman coherences with single-shot fs/ns rotational CARS
(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
- Hosseinnia, Ali LU ; Ruchkina, Maria LU ; Ding, Pengji LU ; Bengtsson, Per Erik LU and Bood, Joakim LU
- organization
- publishing date
- 2020
- 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}}, }