High-sensitivity small-angle sensor based on surface plasmon resonance technology and heterodyne interferometry
Related Experiment Video
Updated: Jul 20, 2026
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Shinn-Fwu Wang1, Ming-Hung Chiu, Chih-Wen Lai
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.
