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Updated: May 19, 2026
15:04
Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy
Published on: May 18, 2011
Fluorescence suppression using wavelength modulated Raman spectroscopy in fiber-probe-based tissue analysis
Bavishna B Praveen1, Praveen C Ashok, Michael Mazilu
1University of St Andrews, SUPA, School of Physics & Astronomy, North Haugh, St Andrews, Fife, Scotland, KY16 9SS, United Kingdom. bb295@st-andrews.ac.uk
Journal of Biomedical Optics
|August 17, 2012
Summary
Wavelength-modulated Raman spectroscopy (WMRS) effectively suppresses fluorescence in fiber-optic tissue analysis. This technique enhances signal quality for biomedical optics applications, enabling rapid, sample-prep-free spectral acquisition.
Area of Science:
- Biomedical optics
- Chemical analysis
- Spectroscopy
Background:
- Raman spectroscopy is vital for biological sample analysis.
- Fiber Raman probes are essential for in vivo and ex vivo tissue examination.
- High autofluorescence from tissues and probes obscures weak Raman signals.
Purpose of the Study:
- To implement wavelength-modulated Raman spectroscopy (WMRS) for fluorescence suppression in fiber-probe-based tissue analysis.
- To enhance the signal-to-noise ratio (SNR) of Raman spectra from biological tissues.
Main Methods:
- Utilized wavelength-modulated Raman spectroscopy (WMRS) with fiber Raman probes.
- Applied the technique to bone and adipose tissue samples.
- Evaluated fluorescence suppression and spectral quality.
Main Results:
- Achieved significant SNR enhancement in Raman bands of bone tissue.
- Obtained usable Raman spectra from bone tissue in approximately 30 seconds.
- Demonstrated effective fluorescence suppression on adipose tissue from multiple species.
Conclusions:
- WMRS is a powerful method for overcoming fluorescence interference in fiber-optic Raman spectroscopy of tissues.
- The technique allows for rapid, label-free, and sample-preparation-free tissue analysis.
- WMRS shows broad applicability for diverse biological tissue studies.
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