TITLE:
Study of Raman Spectroscopy to detect the Underlying Substance Concealed below Diffusely Scattering Medium
AUTHORS:
Xiaohua Zhang, Ji Zhang, Haifeng Zhang, Jianxin Lu, Leijian Wang, Yongsheng Xu
KEYWORDS:
Spatially Offset Raman Spectroscopy; Opaque/sub-transparent Plastic Bottle; Ingredient of the Subsurface; Diffuse Scattering
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2B,
July
22,
2013
ABSTRACT:
Measurement and comparison of NaNO3 powder
concealed in opaque and semi-transparent plastic bottles are carried out
through conventional Raman spectroscopy and spatially offset Raman spectroscopy
individually. The action mechanism why the spatially offset Raman spectroscopy
can effectively detect the medium concealed in the non-transparent bottle
is analyzed. The spatially offset Raman spectroscopy breaks through the
detection neck of the conventional Raman spectroscopy (the detection depth is
small and cannot detect the ingredient of the subsurface under non-transparent
medium), and the measurement and identification of the substance concealed in
the non-transparent medium (opaque/semi-transparent plastic) bottle have been
realized.