High spectral specificity of local chemical components characterization with multichannel shift-excitation Raman spectroscopy.

ABSTRACT: Raman spectroscopy has emerged as a promising tool for its noninvasive and nondestructive characterization of local chemical structures. However, spectrally overlapping components prevent the specific identification of hyperfine molecular information of different substances, because of limitations in the spectral resolving power. The challenge is to find a way of preserving scattered photons and retrieving hidden/buried Raman signatures to take full advantage of its chemical specificity. Here, we demonstrate a multichannel acquisition framework based on shift-excitation and slit-modulation, followed by mathematical post-processing, which enables a significant improvement in the spectral specificity of Raman characterization. The present technique, termed shift-excitation blind super-resolu

SUBMITTER: Chen K 

PROVIDER: S-EPMC4563569 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature