Interferometric analysis of absorbing objects

S. V. Korehazhkin; L. O. Krasnova

doi:10.1117/12.47162

1 September 1991 Interferometric analysis of absorbing objects

S. V. Korehazhkin, L. O. Krasnova

Proceedings Volume 1512, Infrared and Optoelectronic Materials and Devices; (1991) https://doi.org/10.1117/12.47162
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

Abstract

The interference method for reconstruction of the three-dimensional function of an absorption coefficient is presented in this report. The method is based on the use of the nonlinear dependence effect of the refractive index of various media on laser radiation intensity. Powerful laser radiation changes refractive index of specially chosen media to a great extent. These changes can be read out by an interferometer with the aid of probing radiation at any convenient wavelength. The change of the original power density distribution of the radiation under study will cause the change of a form and quantity of fringes. An absorbing (partially diffusing or reflecting) object, introduced into the studied beam, will by no means cause the same changes. Therefore, the change of the form and quantity of the fringes will contain information about an object introduced into radiation.

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S. V. Korehazhkin and L. O. Krasnova "Interferometric analysis of absorbing objects", Proc. SPIE 1512, Infrared and Optoelectronic Materials and Devices, (1 September 1991); https://doi.org/10.1117/12.47162

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