Journal
OPTICS LETTERS
Volume 39, Issue 13, Pages 4025-4028Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.39.004025
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- ERC
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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 819 cm(-1) 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 10(-11) per cm. (C) 2014 Optical Society of America
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