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Instantaneous thermometry imaging using two-photon laser-induced fluorescence

Stiti, Mehdi LU ; Kornienko, Vassily LU ; Kristensson, Elias LU ; Castanet, Guillaume and Berrocal, Edouard LU (2024) In Optics Letters 49(10). p.2569-2572
Abstract

Measuring temperature in complex two-phase flows is crucial for understanding the dynamics of heat and mass transfer. In this Letter, we introduce a novel, to the best of our knowledge, optical approach based on the combination of two-photon laser-induced fluorescence (2p-LIF) imaging and two-color laser-induced fluorescence (2CLIF) for instantaneous temperature mapping of complex liquid media. Using Kiton Red (KR) and Rhodamine 560 (R560), a temperature sensitivity of 1.54%/◦C has been achieved over a range of 17–60°C. The monitoring of two-dimensional transient temperature dynamics in the heating and degassing of water shows the efficiency of the 2p–2CLIF. This new approach contributes to the toolkit of optical temperature... (More)

Measuring temperature in complex two-phase flows is crucial for understanding the dynamics of heat and mass transfer. In this Letter, we introduce a novel, to the best of our knowledge, optical approach based on the combination of two-photon laser-induced fluorescence (2p-LIF) imaging and two-color laser-induced fluorescence (2CLIF) for instantaneous temperature mapping of complex liquid media. Using Kiton Red (KR) and Rhodamine 560 (R560), a temperature sensitivity of 1.54%/◦C has been achieved over a range of 17–60°C. The monitoring of two-dimensional transient temperature dynamics in the heating and degassing of water shows the efficiency of the 2p–2CLIF. This new approach contributes to the toolkit of optical temperature measurement techniques, providing a robust solution for studying transient scattering media and high-speed two-phase flows.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
49
issue
10
pages
4 pages
publisher
Optical Society of America
external identifiers
  • scopus:85193206297
  • pmid:38748107
ISSN
0146-9592
DOI
10.1364/OL.516775
language
English
LU publication?
yes
id
b73475c4-22a0-4b3e-bf83-674b53a89e83
date added to LUP
2025-01-14 14:02:09
date last changed
2025-07-16 05:00:36
@article{b73475c4-22a0-4b3e-bf83-674b53a89e83,
  abstract     = {{<p>Measuring temperature in complex two-phase flows is crucial for understanding the dynamics of heat and mass transfer. In this Letter, we introduce a novel, to the best of our knowledge, optical approach based on the combination of two-photon laser-induced fluorescence (2p-LIF) imaging and two-color laser-induced fluorescence (2CLIF) for instantaneous temperature mapping of complex liquid media. Using Kiton Red (KR) and Rhodamine 560 (R560), a temperature sensitivity of 1.54%/<sup>◦</sup>C has been achieved over a range of 17–60°C. The monitoring of two-dimensional transient temperature dynamics in the heating and degassing of water shows the efficiency of the 2p–2CLIF. This new approach contributes to the toolkit of optical temperature measurement techniques, providing a robust solution for studying transient scattering media and high-speed two-phase flows.</p>}},
  author       = {{Stiti, Mehdi and Kornienko, Vassily and Kristensson, Elias and Castanet, Guillaume and Berrocal, Edouard}},
  issn         = {{0146-9592}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{2569--2572}},
  publisher    = {{Optical Society of America}},
  series       = {{Optics Letters}},
  title        = {{Instantaneous thermometry imaging using two-photon laser-induced fluorescence}},
  url          = {{http://dx.doi.org/10.1364/OL.516775}},
  doi          = {{10.1364/OL.516775}},
  volume       = {{49}},
  year         = {{2024}},
}