Finite-size effect on the surface deformation thermal mirror method
JOSA B, Vol. 28, Issue 7, pp. 1735-1739 (2011)
http://dx.doi.org/10.1364/JOSAB.28.001735
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Abstract
The finite-size effect on the thermal mirror (TM) experiments is described. The time-resolved thermoelastic deformation equation is solved and compared to the semi-infinite solution. To determine the applicability of the semi-infinite model, experiments were performed in optical glasses and the quantitative results compared to both models. The analytical results presented here were found to be in excellent agreement with the numerical finite elemental analysis model. Modeling and experiment showed that the TM transient signal is strongly affected as the sample thickness is reduced. The results of the finite-size model demonstrate that it is intrinsically more accurate to characterize physical properties of low optical absorption thin samples, which suggests that the model and the TM method could even be applied to study very thin films down to the micrometer scale.
© 2011 Optical Society of America
OCIS Codes
(140.6810) Lasers and laser optics : Thermal effects
(300.6430) Spectroscopy : Spectroscopy, photothermal
(350.5340) Other areas of optics : Photothermal effects
ToC Category:
Photothermal Effects
History
Original Manuscript: May 11, 2011
Manuscript Accepted: May 20, 2011
Published: June 23, 2011
Citation
N. G. C. Astrath, L. C. Malacarne, V. S. Zanuto, M. P. Belancon, R. S. Mendes, M. L. Baesso, and C. Jacinto, "Finite-size effect on the surface deformation thermal mirror method," J. Opt. Soc. Am. B 28, 1735-1739 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-7-1735
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