Instantaneous thermometry imaging using two-photon laser-induced fluorescence

Mehdi Stiti, Vassily Kornienko, Elias Kristensson, Guillaume Castanet, Edouard Berrocal

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

Sammanfattning

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.

Originalspråkengelska
Sidor (från-till)2569-2572
Antal sidor4
TidskriftOptics Letters
Volym49
Nummer10
DOI
StatusPublished - 2024 maj

Ämnesklassifikation (UKÄ)

  • Atom- och molekylfysik och optik

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