• Laser & Optoelectronics Progress
  • Vol. 58, Issue 11, 1123002 (2021)
Yan Lu1、3, Xiaowen Shi1, Xiaoyan Deng1, Yumeng Tao2, Hongli Chen3、*, Jinghuai Fang3, and Chonggui Zhong3
Author Affiliations
  • 1School of Transportation Engineering, Jiangsu Shipping College, Nantong , Jiangsu 226010, China
  • 2School of Rail Transportation, Nanjing Vocational Institute of Transport Technology, Nanjing , Jiangsu 211188, China
  • 3School of Science, Nantong University, Nantong , Jiangsu 226019, China
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    DOI: 10.3788/LOP202158.1123002 Cite this Article Set citation alerts
    Yan Lu, Xiaowen Shi, Xiaoyan Deng, Yumeng Tao, Hongli Chen, Jinghuai Fang, Chonggui Zhong. Enhanced Raman Scattering Based on Thickness of Oscillating Metallic Optical Waveguide[J]. Laser & Optoelectronics Progress, 2021, 58(11): 1123002 Copy Citation Text show less

    Abstract

    In this study, the Raman scattering of copper phthalocyanine is enhanced by adopting a millimeter-scale oscillating metallic optical waveguide structure. Different from the traditional surface-enhanced Raman spectroscopy (SERS) technology that creates hot spots by designing complex nanostructures of precious metals, we increase the distance between the upper and lower surface metal cladding layers of the metal optical waveguide, which can increase the thickness of the guided wave layer coupling of light energy into guided wave layer, thereby enhancing the interaction between light and matter. Although increasing the thickness of the guiding layer has the risk of a single-mode field strength drop, the advantages are obvious. First, the high mode density facilitated the coupling of incident light energy with the waveguide layer. Second, the excitation light could be incident nearly perpendicular to the waveguide surface, thereby simplifying the optical setup. Finally, the polarization-independent characteristics of the thick waveguide structure contributed to the Raman enhancement.
    Yan Lu, Xiaowen Shi, Xiaoyan Deng, Yumeng Tao, Hongli Chen, Jinghuai Fang, Chonggui Zhong. Enhanced Raman Scattering Based on Thickness of Oscillating Metallic Optical Waveguide[J]. Laser & Optoelectronics Progress, 2021, 58(11): 1123002
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