Journal
OPTICS EXPRESS
Volume 26, Issue 19, Pages 24614-24620Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.024614
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Funding
- National Natural Science Foundation of China [11774235, 61705130]
- Natural Science Foundation of Shanghai [17ZR1443400]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Open Fund of the State Key Laboratory of ASIC and System
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A hybrid integration of nanoporous gold with silicon nitride waveguide has been realized for surface-enhanced Raman spectroscopy (SERS) at 633-nm wavelength. The SERS signal is excited through 580-nm-thick T-shape suspended waveguides and collected through an objective lens. Raman spectra for different mesa width at either transverse electric (TE) or transverse magnetic (TM) mode are measured and compared. The localized surface plasmon resonance of the nanoporous gold can result in a waveguide and polarization-dependent SERS enhancement. The presented miniaturized SERS chips can work from visible to near-infrared wavelength and a wide application prospect could be expected. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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