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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 29 — Oct. 10, 2005
  • pp: 6296–6306

Model for continuous-wave laser-induced thermal lens spectrometry of optically transparent surface-absorbing solids

Dmitry A. Nedosekin, Mikhail A. Proskurnin, and Mikhail Yu. Kononets  »View Author Affiliations


Applied Optics, Vol. 44, Issue 29, pp. 6296-6306 (2005)
http://dx.doi.org/10.1364/AO.44.006296


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Abstract

A theoretical model for cw laser-induced thermal lens spectrometry of optically transparent surface-absorbing solids is developed. In the model, the sample is represented as a set of discrete layers with certain thicknesses and light absorptivities. The bloomed thermo-optical element in the sample is described with a summation of heat-flux functions for all the layers. The model employs simple mathematical expressions and can be used for both steady-state and time-resolved thermal lens experiments. Good coincidence of the experimental and theoretically predicted signal dependences is achieved. This model is verified for volume-absorbing samples (colored optical glasses) and used successfully to calculate absorbances and concentrations for various surface-absorbing samples.

© 2005 Optical Society of America

OCIS Codes
(300.6430) Spectroscopy : Spectroscopy, photothermal
(300.6490) Spectroscopy : Spectroscopy, surface

ToC Category:
Spectroscopy

History
Original Manuscript: January 3, 2005
Manuscript Accepted: May 2, 2005
Published: October 10, 2005

Citation
Dmitry A. Nedosekin, Mikhail A. Proskurnin, and Mikhail Yu. Kononets, "Model for continuous-wave laser-induced thermal lens spectrometry of optically transparent surface-absorbing solids," Appl. Opt. 44, 6296-6306 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-29-6296

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