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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 13 — Jul. 1, 2014
  • pp: 4025–4028

Evanescent excitation and collection of spontaneous Raman spectra using silicon nitride nanophotonic waveguides

Ashim Dhakal, Ananth Z. Subramanian, Pieter Wuytens, Frédéric Peyskens, Nicolas Le Thomas, and Roel Baets  »View Author Affiliations

Optics Letters, Vol. 39, Issue 13, pp. 4025-4028 (2014)

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We experimentally demonstrate the use of high contrast, CMOS-compatible integrated photonic waveguides for Raman spectroscopy. We also derive the dependence of collected Raman power with the waveguide parameters and experimentally verify the derived relations. Isopropyl alcohol (IPA) is evanescently excited and detected using single-mode silicon-nitride strip waveguides. We analyze the measured signal strength of pure IPA corresponding to an 819cm1 Raman peak due to in-phase C-C-O stretch vibration for several waveguide lengths and deduce a pump power to Raman signal conversion efficiency on the waveguide to be at least 1011percm.

© 2014 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.6010) Integrated optics : Sensors
(230.7380) Optical devices : Waveguides, channeled
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(290.5860) Scattering : Scattering, Raman
(300.6450) Spectroscopy : Spectroscopy, Raman

ToC Category:
Integrated Optics

Original Manuscript: April 30, 2014
Revised Manuscript: May 27, 2014
Manuscript Accepted: May 30, 2014
Published: June 30, 2014

Ashim Dhakal, Ananth Z. Subramanian, Pieter Wuytens, Frédéric Peyskens, Nicolas Le Thomas, and Roel Baets, "Evanescent excitation and collection of spontaneous Raman spectra using silicon nitride nanophotonic waveguides," Opt. Lett. 39, 4025-4028 (2014)

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