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Proceedings Paper

Acousto-optic tunable filter application for rough surface profile investigations
Author(s): Boris S. Gurevich; Valentin V. Shapovalov; Sergey V. Andreyev; Andrey V. Belyaev
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Paper Abstract

Acousto-optic tunable filters (AOTF) as well as optical components with strong chromatic aberration are used in the mock-up of surface profilometer. The basic parameter of such device is resolving power by z-distance which has to be defined according to certain criterion. This criterion, in its turn, is defined by the admissible probability to miss the information unit regarding the object characterization in z-distance. The results of experiments are discussed from the point of view of the AOTF possibilities to increase the z-distance resolving power in comparison with the existing systems. Such results as the 90%-probability distinguishing of defocusing while electric frequency variation of 200 kHz, can be considered as serious advantage. The perspectives of the further improvement of information transmission by such a device are discusssed. It has been found that this improvement can be attained by means of noise level decreasing to the taking place for electric frequency of 94 MHz.

Paper Details

Date Published: 22 April 2008
PDF: 6 pages
Proc. SPIE 7008, Eighth International Conference on Correlation Optics, 700818 (22 April 2008);
Show Author Affiliations
Boris S. Gurevich, Scientific Instruments Co. (Russia)
Valentin V. Shapovalov, Biotechnnical Systems Research Institute (Russia)
Sergey V. Andreyev, Scientific Instruments Co. (Russia)
Andrey V. Belyaev, Institute for Analytical Instrumentation (Russia)

Published in SPIE Proceedings Vol. 7008:
Eighth International Conference on Correlation Optics
Malgorzata Kujawinska; Oleg V. Angelsky, Editor(s)

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