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Updated: Aug 30, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
Published on: April 16, 2017
Differential thermal lensing in extended samples
A Marcano1, J Hung, L Rodríguez
1Centro de Física, Instituto Venezolano de Investigaciones Científicas, Caracas 1020A Apartado 21827, Venezuela. marcano@pion.ivic.ve
Abstract:
We present a new scheme for a pump-probe mode-mismatched thermal lensing experiment aimed at extracting the value of low-absorbing components in the presence of a high-absorbing background. The method allows for the use of large path-length samples. Changes in the background absorption of a column of ethanol of 20 cm of 1% and a pollutant concentration detection limit of 0.04 ppm are obtained when using a pump light power of 34 mW.
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