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Optical Engineering

Contrast-enhancing polarization control method for surface plasmon imaging sensor
Author(s): Zihao Huang; Xiaoping Wang; Shuyue Zhan; Xu Liu
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Paper Abstract

Based on the surface plasmon resonance (SPR) polarization control theory, a prism polarization control method is proposed. The method works by suppressing the light reflected from the bare prism used for high-throughput SPR array sensors. The contrast of SPR imaging sensors can be enhanced while maintaining high sensitivity. The effects of the proposed method on sensor performance, which is attributable to parameters such as incident angle, wavelength, polarizer angle, and gold film thickness, are analyzed to determine the best set of parameters. The effects of parameter errors on the SPR curve are also simulated and compared with those of the gold film polarization control method. Finally, an experiment is set up to validate the theoretical analysis and provide a solid foundation for the design of a high-sensitivity SPR imaging sensor.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Opt. Eng. 51(9) 094402 doi: 10.1117/1.OE.51.9.094402
Published in: Optical Engineering Volume 51, Issue 9
Show Author Affiliations
Zihao Huang, Zhejiang Univ. (China)
Xiaoping Wang, Zhejiang Univ. (China)
Shuyue Zhan, Zhejiang Univ. (China)
Xu Liu, Zhejiang Univ. (China)

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