Journal
OPTICS LETTERS
Volume 35, Issue 17, Pages 2937-2939Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.002937
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Funding
- National Natural Science Foundation of China (NSFC) [90923039]
- U.S. Department of Energy (DOE) [DE-FE0001127]
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We report a surface-enhanced Raman scattering (SERS) microchip that is capable of measuring SERS signals of liquid samples with high sensitivity. The microdevice is an integration of a silicon-based SERS substrate, a multi-mode optical fiber (MMF), and a microchannel embedded in the photosensitive glass fabricated by the femtosecond laser followed by thermal treatment, wet etching, and annealing. The performance of the SERS microchip is evaluated by measuring rhodamine 6G using a 632.8 nm He-Ne laser at 4.3 mW excitation power, which reveals that the detection limit is lower than 10(-10) M at a 1 s short accumulation time. (C) 2010 Optical Society of America
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