Finite-size effect on the surface deformation thermal mirror method

被引:27
|
作者
Astrath, N. G. C. [1 ]
Malacarne, L. C. [1 ]
Zanuto, V. S. [1 ]
Belancon, M. P. [1 ]
Mendes, R. S. [1 ]
Baesso, M. L. [1 ]
Jacinto, C. [2 ]
机构
[1] Univ Estadual Maringa, Dept Fis, Grp Estudo Fenomenos Fototerm, BR-87020900 Maringa, Parana, Brazil
[2] Univ Fed Alagoas, Inst Fis, Grp Foton & Fluidos Complexos, BR-57072970 Maceio, AL, Brazil
关键词
PULSED PHOTOTHERMAL DEFORMATION; 3-DIMENSIONAL THEORY; COMPLETE MODEL; SEMICONDUCTORS; SPECTROSCOPY; SOLIDS; LENS;
D O I
10.1364/JOSAB.28.001735
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
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. (c) 2011 Optical Society of America
引用
收藏
页码:1735 / 1739
页数:5
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