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.

Discriminating the role of sample length in thermal lensing of solids

T. P. Rodrigues, V. S. Zanuto, R. A. Cruz, T. Catunda, M. L. Baesso, N. G. C. Astrath, and L. C. Malacarne
Opt. Lett. 39(13) 4013-4016 (2014)

First-order model of thermal lensing in a virtual eye

Rebecca L. Vincelette, Robert J. Thomas, Benjamin A. Rockwell, Clifton D. Clark III, and Ashley J. Welch
J. Opt. Soc. Am. A 26(3) 548-558 (2009)

Optimizing and calibrating a mode-mismatched thermal lens experiment for low absorption measurement

Arístides Marcano, Humberto Cabrera, Mayamaru Guerra, Renato A. Cruz, Carlos Jacinto, and Tomaz Catunda
J. Opt. Soc. Am. B 23(7) 1408-1413 (2006)

Observing thermal lensing with quantum light

Marco Barbieri, Iole Venditti, Chiara Battocchio, Vincenzo Berardi, Fabio Bruni, and Ilaria Gianani
Opt. Lett. 49(5) 1257-1260 (2024)

Thermal-lensing measurement of particle thermophoresis in aqueous dispersions

Roberto Rusconi, Lucio Isa, and Roberto Piazza
J. Opt. Soc. Am. B 21(3) 605-616 (2004)