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Volume holographic spectral imaging

机译:体全息光谱成像

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摘要

We report on a volume holographic imaging spectrometer (VMS) system which allows retrieval of a scene's two-dimensional spatial information as well as its spectral information. This is performed using a transmission volume hologram and a simple rotary scanning mechanism. The system has the advantages of high spectral and spatial resolutions and the potential of single-shot, four-dimensional (3D spatial plus 1D spectral) imaging by recording multiple volume holograms in the same material. Also, due to the transmission diffraction geometry, the system automatically eliminates the stray excitation light from the captured signal. We give theoretical analysis of the performance and experimental demonstration using fluorescent CdSe/ZeS quantum dots. The measured quantum dots spectra agree well with the spectra obtained using a conventional spectrometer.
机译:我们报告了一种体积全息成像光谱仪(VMS)系统,该系统允许检索场景的二维空间信息及其光谱信息。这是使用透射体积全息图和简单的旋转扫描机制执行的。该系统具有高光谱和空间分辨率的优势,并且通过在同一材料中记录多个体积全息图,具有单次拍摄的四维(3D空间加1D光谱)成像的潜力。而且,由于透射衍射的几何形状,系统会自动从捕获的信号中消除杂散激发光。我们使用荧光CdSe / ZeS量子点给出了性能的理论分析和实验演示。测得的量子点光谱与使用常规光谱仪获得的光谱非常吻合。

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