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8 February 2008 Divided shifted Raman spectroscopy for carotenoid detection
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Proceedings Volume 6853, Biomedical Optical Spectroscopy; 68530A (2008)
Event: SPIE BiOS, 2008, San Jose, California, United States
We have developed a compact portable instrument for resonance Raman spectroscopy of carotenoid molecules in skin tissue. Our application focuses on the 1525 cm-1 Raman line common to all carotenoids. We use a divided shifted Raman spectroscopy (DSRS) technique that reduces sensitivity to detector drift and error. Two wavelength-narrowed LEDs illuminate the sample, and scattered light in four different wavelength channels is measured. This multi-spectral approach has single-photon sensitivity and compares favorably with laser-based Raman measurements in terms of accuracy, repeatability, and measurement time.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. D. Bergeson, J. B. Peatross, N. J. Eyring, J. F. Fralick, and S. B. Ferguson "Divided shifted Raman spectroscopy for carotenoid detection", Proc. SPIE 6853, Biomedical Optical Spectroscopy, 68530A (8 February 2008);

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