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Ammonia measurements with femtosecond laser-induced plasma spectroscopy

Zhang, Dayuan; Gao, Qiang LU ; Li, Bo LU ; Liu, Jixu and Li, Zhongshan LU (2019) In Applied Optics 58(5). p.1210-1214
Abstract


Femtosecond laser-induced plasma spectroscopy for in situ ammonia (NH
3
) measurements was demonstrated in NH
3
∕N
2
mixtures. When a femtosecond laser at 800 nm was focused at the flow field, the parent NH
... (More)


Femtosecond laser-induced plasma spectroscopy for in situ ammonia (NH
3
) measurements was demonstrated in NH
3
∕N
2
mixtures. When a femtosecond laser at 800 nm was focused at the flow field, the parent NH
3
molecules would be photolyzed to generate electronics excited NH fragments, and then indirect measurements of NH
3
could be realized by detecting the NH fluorescence (A
3
Π − X
3
Σ

) at 336 nm. A detection limit of 205 ppm was achieved. This work is the first attempt, to the best of our knowledge, for ammonia measurements with a femtosecond laser, and the results are useful for the development of ammonia diagnostics.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
58
issue
5
pages
5 pages
publisher
OSA
external identifiers
  • scopus:85061450402
ISSN
1559-128X
DOI
10.1364/AO.58.001210
language
English
LU publication?
yes
id
31196476-8273-4811-8f3a-88864e645474
date added to LUP
2019-02-21 11:59:41
date last changed
2019-07-16 04:05:10
@article{31196476-8273-4811-8f3a-88864e645474,
  abstract     = {<p><br>
                                                         Femtosecond laser-induced plasma spectroscopy for in situ ammonia (NH                             <br>
                            <sub>3</sub><br>
                                                         ) measurements was demonstrated in NH                             <br>
                            <sub>3</sub><br>
                                                         ∕N                             <br>
                            <sub>2</sub><br>
                                                          mixtures. When a femtosecond laser at 800 nm was focused at the flow field, the parent NH                             <br>
                            <sub>3</sub><br>
                                                          molecules would be photolyzed to generate electronics excited NH fragments, and then indirect measurements of NH                             <br>
                            <sub>3</sub><br>
                                                          could be realized by detecting the NH fluorescence (A                             <br>
                            <sup>3</sup><br>
                                                         Π − X                             <br>
                            <sup>3</sup><br>
                                                         Σ                             <br>
                            <sup>−</sup><br>
                                                         ) at 336 nm. A detection limit of 205 ppm was achieved. This work is the first attempt, to the best of our knowledge, for ammonia measurements with a femtosecond laser, and the results are useful for the development of ammonia diagnostics.                         <br>
                        </p>},
  author       = {Zhang, Dayuan and Gao, Qiang and Li, Bo and Liu, Jixu and Li, Zhongshan},
  issn         = {1559-128X},
  language     = {eng},
  month        = {02},
  number       = {5},
  pages        = {1210--1214},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {Ammonia measurements with femtosecond laser-induced plasma spectroscopy},
  url          = {http://dx.doi.org/10.1364/AO.58.001210},
  volume       = {58},
  year         = {2019},
}