Spatially offset Raman spectroscopy detection for the concealed components in non-metallic opaque and translucent containers

Qiushi Liu; Hongyu He; Mingjiang Ma; Baozhen Zhao; Zhingxing Gao; Xianghao Meng; Chong Lv; Xiaohua Zhang

doi:10.1117/12.2580048

5 November 2020 Spatially offset Raman spectroscopy detection for the concealed components in non-metallic opaque and translucent containers

Qiushi Liu, Hongyu He, Mingjiang Ma, Baozhen Zhao, Zhingxing Gao, Xianghao Meng, Chong Lv, Xiaohua Zhang

Author Affiliations +

Proceedings Volume 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics; 115660L (2020) https://doi.org/10.1117/12.2580048
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

As a new type of conventional Raman spectroscopy(CRS) technology, spatially offset Raman spectroscopy(SORS) can acquire subsurface information of the multi-layered materials and realize the detection of concealed materials in nonmetallic opaque and translucent containers. In this paper, the spectrum of NaNO₃ powder in a red opaque plastic bottle and a brown translucent glass bottle were detected with a 785nm SORS detection system. According to comparison and analysis, the Raman signal and fluorescence of the surface opaque HDPE container and the surface translucent glass container were suppressed by SORS. The subsurface concealed NaNO₃ Raman spectrum peak was detected successfully.

Citation Download Citation

Qiushi Liu, Hongyu He, Mingjiang Ma, Baozhen Zhao, Zhingxing Gao, Xianghao Meng, Chong Lv, and Xiaohua Zhang "Spatially offset Raman spectroscopy detection for the concealed components in non-metallic opaque and translucent containers", Proc. SPIE 11566, AOPC 2020: Optical Spectroscopy and Imaging; and Biomedical Optics, 115660L (5 November 2020); https://doi.org/10.1117/12.2580048

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