20 September 2007 Spatial filtering with surface plasmon resonance systems
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Surface plasmon resonance based sensors are most useful in measuring the refractive indices of biochemicals. In such sensors a beam of light obliquely incident at an interface of glass and metallic thin film excites resonant plasmon waves in the metal if the angle of incidence or the wavelength is selected properly. The resonance conditions are changed by the refractive indices of any material in contact with the metal film. When resonance occurs the light beam is absorbed strongly. We can easily show that the phenomenon of surface plasmon resonance in such a system acts as a high quality spatial notch or band rejection filter.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. K. Ghosh, A. K. Ghosh, V. Siddharth, V. Siddharth, M. Bhagat, M. Bhagat, S. Aggarwal, S. Aggarwal, P. Anurag, P. Anurag, M. Jain, M. Jain, } "Spatial filtering with surface plasmon resonance systems", Proc. SPIE 6695, Optics and Photonics for Information Processing, 669506 (20 September 2007); doi: 10.1117/12.735446; https://doi.org/10.1117/12.735446

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