Abstract

Application of the acousto-optic (AO) Bragg diffraction in the processing of 2D images is analyzed. It is shown that conventional Bragg diffraction can be used for 2D processing provided that the zero-order diffraction is supplemented with the diffraction to an additional (side) order. A 2D contour of an optical image is experimentally detected using the first-order diffraction of radiation with a wavelength of 0.63 × 10^–4 cm. An AO cell made from ТеО₂ single crystal is used as an AO filter of spatial frequencies. Diffraction orders are formed in such an AO cell due to AO interaction with an acoustic wave with a frequency of 26 MHz.

中文翻译：

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使用布拉格衍射处理2D图像

摘要

分析了声光（AO）布拉格衍射在2D图像处理中的应用。已表明，常规的布拉格衍射可用于2D处理，前提是零级衍射被附加到另外的（侧）级衍射。使用波长为0.63×10 ^–4 cm的辐射的一阶衍射实验检测出光学图像的2D轮廓。从ТеО由AO细胞₂单晶用作空间频率的AO滤波器。由于AO与频率为26MHz的声波的相互作用，在这种AO单元中形成衍射级。