Defocusing micro-spatially offset Raman spectroscopy (micro-SORS) is a recently developed technique that was proven to be successful in cultural heritage research to investigate non-destructively the stratigraphy of turbid or semi-transparent paint layers. However, until now this approach has not been applied to obtain imaging information with inhomogeneous real samples. In this work, a defocusing micro-SORS mapping approach is demonstrated with a 19^th century porcelain card as a tool to study inhomogeneous painted stratigraphies; the depth information obtained with averaged defocusing sequences was combined with the lateral and spatial distribution achieved by mapping the painted zones. The effectiveness of the technique was verified by analysing an area where a partial overlapping of red (vermilion), blue (Prussian blue), green (chrome yellow and Prussian blue), and brown (vermillion and carbon black) pigmented zones is present, on top of a white (lead white) preparation layer.

中文翻译：

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散焦微SORS映射的发展：一19的研究^个世纪瓷器卡

散焦微空间偏移拉曼光谱仪（micro-SORS）是一项最近开发的技术，在文化遗产研究中被证明是成功的，可以无损地研究浑浊或半透明的漆层地层。但是，直到现在，这种方法还没有应用于获得具有不均匀真实样本的成像信息。在这项工作中，^第19^号演示了散焦micro-SORS映射方法世纪瓷卡作为研究不均匀彩绘地层的工具；将平均散焦序列获得的深度信息与通过绘制绘制区域而获得的横向和空间分布相结合。通过分析一个区域上存在红色（朱红色），蓝色（普鲁士蓝色），绿色（铬黄色和普鲁士蓝色）和棕色（朱红色和炭黑）色素区域的部分重叠，验证了该技术的有效性。白色（铅白色）制备层的顶部。