Acousto-optic tunable filter application for rough surface profile investigations

Boris S. Gurevich; Valentin V. Shapovalov; Sergey V. Andreyev; Andrey V. Belyaev

doi:10.1117/12.797217

22 April 2008 Acousto-optic tunable filter application for rough surface profile investigations

Boris S. Gurevich, Valentin V. Shapovalov, Sergey V. Andreyev, Andrey V. Belyaev

Proceedings Volume 7008, Eighth International Conference on Correlation Optics; 700818 (2008) https://doi.org/10.1117/12.797217
Event: Eighth International Conference on Correlation Optics, 2007, Chernivsti, Ukraine

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.

Citation Download Citation

Boris S. Gurevich, Valentin V. Shapovalov, Sergey V. Andreyev, and Andrey V. Belyaev "Acousto-optic tunable filter application for rough surface profile investigations", Proc. SPIE 7008, Eighth International Conference on Correlation Optics, 700818 (22 April 2008); https://doi.org/10.1117/12.797217

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