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Applied Optics

Applied Optics


  • Vol. 45, Iss. 26 — Sep. 10, 2006
  • pp: 6702–6707

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

Shinn-Fwu Wang, Ming-Hung Chiu, Chih-Wen Lai, and Rong-Seng Chang  »View Author Affiliations

Applied Optics, Vol. 45, Issue 26, pp. 6702-6707 (2006)

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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 1.2 × 10 7 rad over the measurement range of 0.15 ° θ 0.15 ° . The method has some merits, e.g., a simple optical setup, easy operation, high resolution, high sensitivity, and rapid measurement. Its feasibility is demonstrated.

© 2006 Optical Society of America

OCIS Codes
(040.2840) Detectors : Heterodyne
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(240.6680) Optics at surfaces : Surface plasmons

Original Manuscript: November 28, 2005
Revised Manuscript: April 5, 2005
Manuscript Accepted: April 27, 2006

Shinn-Fwu Wang, Ming-Hung Chiu, Chih-Wen Lai, and Rong-Seng Chang, "High-sensitivity small-angle sensor based on surface plasmon resonance technology and heterodyne interferometry," Appl. Opt. 45, 6702-6707 (2006)

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