Broad detecting range of objective-based surface plasmon resonance sensor via multilayer structure

Tzu Hsiang Lan; Yi Kuan Chung; Chung-Hao Tien

doi:10.1143/JJAP.50.09MG04

Broad detecting range of objective-based surface plasmon resonance sensor via multilayer structure

Tzu Hsiang Lan, Yi Kuan Chung, Chung-Hao Tien^*

^*Corresponding author for this work

National Chiao Tung University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The demand of pursuing higher resolution drives the instrumental development of a surface plasmon resonance (SPR) sensor to shift from Kretchmann to objective-based configuration. However, its maximum sensing refractive index is restricted by the numerical aperture of an objective lens. Based on the mode conversion, we proposed a multilayer structure to extend the detecting range up to 11% (from 1.28 to 1.42) for a 1.45 objective lens via a transformed SPR mode. This technique not only overcomes intrinsic constraint but also reduces the cost.

Original language	English
Article number	09MG04
Journal	Japanese Journal of Applied Physics
Volume	50
Issue number	9 PART 2
DOIs	https://doi.org/10.1143/JJAP.50.09MG04
State	Published - 1 Sep 2011

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