Guerra M, Taouri A, Marcano O A, Cabrera H, Sylla M. Measurement of nonlinear absorption coefficients of organic materials by mode-mismatched Z-scan thermal lensing technique.
Appl Spectrosc 2007;
61:1128-1133. [PMID:
17958965 DOI:
10.1366/000370207782217716]
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Abstract
We evaluate a new pump-probe mode-mismatched thermal lens (TL) scheme for the measurement of nonlinear absorption in nitrobenzene, benzene, and chloroform. In this new scheme the pump beam is focused in the presence of a collimated probe beam. Values of the nonlinear absorption coefficients of the materials studied for the wavelength of 532 nm are reported, and we compare the proposed technique with the well-known open Z-scan method.
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