G. Mo"cnik, M. Franko, Z. Bozoki, D. Bicanic, H. Jalink:
On the simultaneous effect of beam deflection and thermal lensing
phenomena in photothermal spectrometry
Instr. Sci. and Tech. 26 (1998) 289-303
Abstract
A general model that accounts for a combined effect
of thermal lensing and photothermal beam deflection was derived. The
model enables the estimation of contributions to the measured
photothermal signal from each of the two phenomena. Experimental
parameters such as modulation frequency, the pump beam diameter, and
the position of detector can be optimized using this model in order to
minimize the unwanted effects of misalignment or laser pointing
instability, and to improve the accuracy of thermal lens and
photothermal beam deflection spectrometry.
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