Wang Y, Yuan H, Zhao X, Zhang P, Wang G, Gao F. Compressive Raman imaging by combining scattering-projection interleaving with context-aware excitation.
ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024;
16:583-588. [PMID:
38189485 DOI:
10.1039/d3ay02231e]
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Abstract
Exciting an object with a laser-focus array and randomly interleaving its scattering projection has been proved to be an effective strategy for speeding up Raman imaging. The so-called scattering interleaved Raman imaging (SIRI) method allows Raman hyperspectral imaging with a single snapshot and exhibits excellent reconstruction fidelity and signal-to-noise ratios (SNRs). Here, we show that the performance of SIRI is significantly improved when combined with context-aware excitation. The experiments on micro-plastics demonstrate that the restriction of Raman excitation within a smaller region of interest as guided by bright-field microscopy improves the signal intensity and the SNR, and it is surprising that the spectral resolution is also significantly improved. The context-aware SIRI method is successfully used for imaging of lipid-producing yeast cells, suggesting that it is a promising analytical tool for studying live cells or tissues.
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