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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 57, Iss. 10 — Oct. 1, 2003
  • pp: 1278–1281

Differential Thermal Lensing in Extended Samples

A. Marcano O., J. Hung, L. Rodríguez, and L. Borrero

Applied Spectroscopy, Vol. 57, Issue 10, pp. 1278-1281 (2003)


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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.

Citation
A. Marcano O., J. Hung, L. Rodríguez, and L. Borrero, "Differential Thermal Lensing in Extended Samples," Appl. Spectrosc. 57, 1278-1281 (2003)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-57-10-1278


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