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Beam deformation within an acousto-optic lens

机译:声光透镜内的光束变形

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The acousto-optic lens (AOL) is becoming a popular tool in the neuroscience field. Here we analyzed the deformation of the diffraction beam after passage through an AOL consisting of a pair of acousto-optic deflectors using both theoretical and experimental data. The results showed that, because of the high sensitivity of optical spatial frequencies of acousto-optic deflectors, the boundary strength of the diffraction beam of the AOL decreases significantly. When the focal length of AOL diminishes, the deformation of the diffraction beam becomes more serious with a smaller beam size. This deformation of the diffraction beam finally leads to a decreased illuminative numerical aperture, which worsens the image's spatial resolution. (C) 2015 Optical Society of America
机译:声光透镜(AOL)成为神经科学领域的一种流行工具。在这里,我们使用理论和实验数据分析了通过一对由一对声光偏转器组成的AOL后的衍射光束的变形。结果表明,由于声光偏转器光学空间频率的高灵敏度,AOL衍射光束的边界强度显着降低。当AOL的焦距减小时,衍射光束的变形随着光束尺寸的减小而变得更加严重。衍射光束的这种变形最终导致减小的照明数值孔径,这恶化了图像的空间分辨率。 (C)2015年美国眼镜学会

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