Abstract

The problem of creating an acousto-optic (AO) tunable filter, which allows us to obtain high-quality spectral images both in the visible and near-infrared ranges, is studied. Based on the analysis of the wide-aperture noncollinear geometry of AO diffraction in paratellurite, the AO cell configuration is determined that is optimal in terms of minimizing chromatic shift and is suitable for both ranges. Two identical cells are manufactured and matched for the ranges 450–900 and 900–1700 nm. Experimental verification of the results of optical modeling showed that, over the entire range of 450 to 1700 nm, the calculated AO filter provides high-quality spectral images.

中文翻译：

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适用于450–900和900–1700 nm光谱范围的可调声光滤波器

摘要

研究了创建声光（AO）可调滤镜的问题，该滤镜使我们能够在可见光和近红外范围内获得高质量的光谱图像。基于对星云石中AO衍射的大孔径非共线几何学的分析，确定了AO单元配置，该配置在最小化色移方面是最佳的，并且适用于两个范围。制造了两个相同的单元，并匹配了450–900和900–1700 nm的范围。光学建模结果的实验​​验证表明，在450至1700 nm的整个范围内，计算出的AO滤波器可提供高质量的光谱图像。