SERS application of propagating surface plasmon modes in 1D metallic gratings

Su Xu; Hao-ran Su; Kang Qin; Yu-bo Xie; Qian-jin Wang; Xue-jin Zhang; Yan-qing Lu; Yong-yuan Zhu

doi:10.1117/12.2199836

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15 October 2015 SERS application of propagating surface plasmon modes in 1D metallic gratings

Su Xu, Hao-ran Su, Kang Qin, Yu-bo Xie, Qian-jin Wang, Xue-jin Zhang, Yan-qing Lu, Yong-yuan Zhu

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Proceedings Volume 9673, AOPC 2015: Micro/Nano Optical Manufacturing Technologies; and Laser Processing and Rapid Prototyping Techniques; 96730T (2015) https://doi.org/10.1117/12.2199836
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

We investigate the influence of profile of one-dimensional (1D) Ag gratings on the enhancement factor (EF) of surface-enhanced Raman scattering (SERS). An optimized duty ratio of 1D Ag grating is found, and the SERS EF is experimentally obtained on the order of ~ 10⁴, while the finite-difference time-domain simulation shows that the SERS EF can be as high as ~ 10⁶. We ascribe the discrepancy between the simulated and the experimental results mainly to the fluctuation of Ag grating structure, which is confirmed by the topography measurement using scanning electron microscopy and atomic force microscopy.

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Su Xu, Hao-ran Su, Kang Qin, Yu-bo Xie, Qian-jin Wang, Xue-jin Zhang, Yan-qing Lu, and Yong-yuan Zhu "SERS application of propagating surface plasmon modes in 1D metallic gratings", Proc. SPIE 9673, AOPC 2015: Micro/Nano Optical Manufacturing Technologies; and Laser Processing and Rapid Prototyping Techniques, 96730T (15 October 2015); https://doi.org/10.1117/12.2199836

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