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Proceedings Paper

Spectral analysis for SPR sensor with monolayer metal film
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Paper Abstract

In order to explore the key factors of the SPR effect, such as sensitive material, thickness of sensitive metal film, incident angle and wavelength, especially the affection of the incident light wavelength on the modulated reflectivity, calculations and analyses are carried out in this paper. Simulation results show that Ag has the lowest reflectivity when the incident light with shorter wavelength in visible wave band, Au has the lowest reflectivity with red light, and Cu has the best effect from 600 nm to infrared band. The ranges of thickness measurement for thin films can be obtained when the light source wavelength and incidence angle are fixed with the adopted metal sensitive material. Moreover, there is a special range of incidence angle that can put up a significant SPR effect phenomenon when there are definite metal films and wavelength of incident light.

Paper Details

Date Published: 12 March 2020
PDF: 9 pages
Proc. SPIE 11440, 2019 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 114400B (12 March 2020); doi: 10.1117/12.2543345
Show Author Affiliations
Yaopu Lang, Tianjin Univ. (China)
Chong Yue, Tianjin Univ. (China)
Xinglin Zhou, Wuhan Univ. of Science and Technology (China)
Qinggang Liu, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 11440:
2019 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices
Baojun Li; Xingjun Wang; Ya Sha Yi, Editor(s)

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