Exploring surface plasmon-polariton resonance (SPR) in an interferometer configuration

Perry P. Yaney; Fahima Ouchen; James G. Grote

doi:10.1117/12.2193792

12 October 2015 Exploring surface plasmon-polariton resonance (SPR) in an interferometer configuration

Perry P. Yaney, Fahima Ouchen, James G. Grote

Proceedings Volume 9557, Nanobiosystems: Processing, Characterization, and Applications VIII; 95570G (2015) https://doi.org/10.1117/12.2193792
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

An optical, two-channel molecular sensor design using surface-plasmon polariton resonance (SPR) in a Mach-Zehnder interferometer was devised for studying the enhancement due to the presence of interferometry. The objective was to detect very small quantities of gas molecules with molecular weights in the range of 17 to 28 Daltons using either the signal from the transmitted laser beam or the interference image that can be computer analyzed. Dry air in humid air and pure ammonia gas diluted in dry air were studied. Initial studies gave detection sensitivities of better than 70 parts per 10⁸ for changes in refractive index of the gas. With interferometry, recorded signals were 40X greater than with the normal SPR technique.

Conference Presentation

Citation Download Citation

Perry P. Yaney, Fahima Ouchen, and James G. Grote "Exploring surface plasmon-polariton resonance (SPR) in an interferometer configuration", Proc. SPIE 9557, Nanobiosystems: Processing, Characterization, and Applications VIII, 95570G (12 October 2015); https://doi.org/10.1117/12.2193792

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