Polarization Features of a Spatial AO Filter Based on Diffraction in Two Symmetric Orders

IF 0.4 4区工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY

Instruments and Experimental Techniques Pub Date : 2024-06-28 DOI:10.1134/s0020441224700179

V. M. Kotov, S. V. Averin, A. A. Zenkina, A. S. Belousova

引用次数: 0

Abstract

The polarization properties of a two-channel spatial AO filter based on diffraction into two symmetric Bragg orders have been studied. A regime is demonstrated where during Fourier processing of an image, the contours in different channels are formed in different polarizations and at different acoustic frequencies. This regime was confirmed experimentally on the basis of optical Fourier processing of an image transmitted by radiation with an optical wavelength of 0.63 μm. As a spatial frequency filter, an AO cell manufactured of paratellurite was used. This made it possible to form the image contour in one channel at a sound frequency of 34 MHz and in another channel at a frequency of 42 MHz.

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基于两个对称阶衍射的空间 AO 滤波器的偏振特性

摘要研究了基于两个对称布拉格阶衍射的双通道空间 AO 滤波器的偏振特性。结果表明，在对图像进行傅立叶处理时，不同通道中的轮廓是以不同的偏振和不同的声频形成的。通过对光波长为 0.63 μm 的辐射传输的图像进行光学傅立叶处理，实验证实了这一机制。作为空间频率滤波器，使用了一个由准沸石制造的光学观测单元。这样就可以在一个声频为 34 MHz 的声道和另一个声频为 42 MHz 的声道中形成图像轮廓。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Instruments and Experimental Techniques 工程技术-工程：综合

CiteScore

1.20

自引率

33.30%

发文量

113

审稿时长

4-8 weeks

期刊介绍： Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.

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