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Appl Opt. 2006 Sep 10;45(26):6702-7.

High-sensitivity small-angle sensor based on surface plasmon resonance technology and heterodyne interferometry.

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  • 1Department of Electronic Engineering, Ching Yun University, Jhongli City, Taoyuan, Taiwan, ROC.

Abstract

A high-sensitivity small-angle sensor based on surface plasmon resonance technology and heterodyne interferometry is proposed that uses a new technique with two right-angle prisms. Interestingly, the technique provides a novel method for designing small-angle sensors with high sensitivity and high resolution. Its theoretical resolution can reach 1.2x10(-7) rad over the measurement range of -0.15 degrees < or =theta< or =0.15 degrees . The method has some merits, e.g., a simple optical setup, easy operation, high resolution, high sensitivity, and rapid measurement. Its feasibility is demonstrated.

PMID:
16926900
[PubMed]
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