Raman spectroscopy with an integrated arrayed-waveguide grating

An integrated arrayed-waveguide grating fabricated in silicon-oxynitride technology is applied to Raman spectroscopy. After its validation by reproducing the well-known spectrum of cyclohexane, polarized Raman spectra are measured of extracted human teeth containing localized initial carious lesions...

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Bibliographic Details
Published in:	Optics letters Vol. 36; no. 23; p. 4629
Main Authors:	Ismail, N, Choo-Smith, L-P, Wörhoff, K, Driessen, A, Baclig, A C, Caspers, P J, Puppels, G J, de Ridder, R M, Pollnau, M
Format:	Journal Article
Language:	English
Published:	United States 01-12-2011
Subjects:	Dental Caries - diagnosis Dental Caries - metabolism Dental Enamel - chemistry Humans Optical Phenomena Spectrum Analysis, Raman - instrumentation
Online Access:	Get more information
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Summary:	An integrated arrayed-waveguide grating fabricated in silicon-oxynitride technology is applied to Raman spectroscopy. After its validation by reproducing the well-known spectrum of cyclohexane, polarized Raman spectra are measured of extracted human teeth containing localized initial carious lesions. Excellent agreement is obtained between the spectra of healthy and carious tooth enamel measured with our integrated device and spectra recorded using a conventional Raman spectrometer. Our results represent a step toward the realization of compact, hand-held, integrated spectrometers, e.g. for the detection of dental caries at an early stage.
ISSN:	1539-4794
DOI:	10.1364/OL.36.004629