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Differential thermal lensing in extended samples.

A Marcano·J Hung·L Rodríguez·L Borrero
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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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Differential Thermal AnalysisEthanolLasersRefractometrySensitivity and SpecificitySpectrum AnalysisTemperatureWater Pollutants, ChemicalJournal ArticleResearch Support, Non-U.S. Gov't

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A Marcano, J Hung, L Rodríguez, L Borrero. 2003. Differential thermal lensing in extended samples.. https://doi.org/10.1366/000370203769699162

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