| Authors: | H. Zhao, S. Clemmen, A. Raza, R. Baets | | Title: | Stimulated Raman spectroscopy of analytes evanescently probed by a silicon nitride photonic integrated waveguide | | Format: | International Journal | | Publication date: | 3/2018 | | Journal/Conference/Book: | Optics Letters
| | Volume(Issue): | 43(6) p.1403-1406 | | DOI: | 10.1364/OL.43.001403 | | Citations: | 39 (Dimensions.ai - last update: 15/12/2024)
31 (OpenCitations - last update: 27/6/2024)
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Abstract
We report, to the best of our knowledge, the first demonstration of stimulated Raman spectroscopy enhanced by a nanophotonic integrated circuit. The Raman response of low-concentration dimethyl sulfoxide is evanescently probed via centimeter-long wire waveguides. A signal enhancement of close to five orders of magnitude, as compared to the case of on-chip spontaneous Raman scattering, is demonstrated. This significant enhancement factor allows for the use of continuous-wave lasers with milliwatt-level power and uncooled detectors and, therefore, sets the basis of future all-on-a-chip Raman spectrometers suitable for both gas and liquid detection. Related Research Topics
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