Holographic interferometer for controlling transparent substrates of diffractive optical elements

  • Nataliya T. Avlasevich Yanka Kupala State University of Grodno, 22 E. Ažeška Street, Hrodna 230023, Belarus
  • Andrey I. Buts Technological college of the Yanka Kupala State University of Grodno, 84 Horkaha Street, Hrodna 230009, Belarus
  • Aliaksandr M. Lialikau Yanka Kupala State University of Grodno, 22 E. Ažeška Street, Hrodna 230023, Belarus

Abstract

The procedures of optical manufacturing inspection necessitate implementation of relatively simple and effective interference devices enabling realization of various methods to control optical elements. This paper presents a scheme of holographic optical interferometer suitable for the working conditions; the interferometer may be used for the interference quality control of optical elements such as a phase diffraction grating on the transparent glass substrate. The suggested procedure is based on comparison between the element controlled and the reference. In the interferometer scheme under consideration the final interferogram is formed by superposition of two light beams (object and reference) with a spatial shift comparable to the diameter of the beam itself and exceeding the linear dimensions of the diffractive optical element (DOE) under study. The resultant interference patterns for the substrates of DOEs subjected to the control procedures are given. The proposed method may be used for the optical manufacturing inspection of DOEs.

Author Biographies

Nataliya T. Avlasevich, Yanka Kupala State University of Grodno, 22 E. Ažeška Street, Hrodna 230023, Belarus

postgraduate student at the department of information systems and technologies, physico-technical faculty

Andrey I. Buts, Technological college of the Yanka Kupala State University of Grodno, 84 Horkaha Street, Hrodna 230009, Belarus

PhD (physics and mathematics); director

Aliaksandr M. Lialikau, Yanka Kupala State University of Grodno, 22 E. Ažeška Street, Hrodna 230023, Belarus

doctor of science (physics and mathematics); professor at the department of information systems and technologies, physico-technical faculty

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Published
2017-05-30
Keywords: holographic interferometer, quality control of optical elements, diffractive optical elements
How to Cite
Avlasevich, N. T., Buts, A. I., & Lialikau, A. M. (2017). Holographic interferometer for controlling transparent substrates of diffractive optical elements. Journal of the Belarusian State University. Physics, 2, 34-40. Retrieved from https://journals.bsu.by/index.php/physics/article/view/437
Issue
No 2 (2017): Journal of the Belarusian State University. Physics
Section
Optics and Spectroscopy

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