Title :
Differential Detection for Nanoplasmonic Resonance Sensors
Author :
Ptasinski, Joanna ; Pang, Lin ; Sun, Pang-Chen ; Slutsky, Boris ; Fainman, Yeshaiahu
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California at San Diego, La Jolla, CA, USA
Abstract :
A differential measurement design employing two nearly collinear optical beams can lead to surface plasmon polariton (SPP) sensors of increased dynamic range and signal-to-noise ratio. We demonstrate a differential measurement device that is based on wavelength interrogation, employs a single incident polarization state, and is combined with a 2-D nanohole array for operation at near-normal incidence, where this approach offers a decrease in the measurement time.
Keywords :
differential detection; light polarisation; nanosensors; optical sensors; polaritons; surface plasmon resonance; 2D nanohole array; SPP sensors; collinear optical beams; differential detection; differential measurement device; nanoplasmonic resonance sensors; near normal incidence; polarization; signal-to-noise ratio; surface plasmon polariton; wavelength interrogation; Arrays; Laser beams; Optical surface waves; Plasmons; Sensitivity; Sensors; Wavelength measurement; Bioplasmonics; biosensors; gold nanohole array; surface plasmon polariton (SPP); surface plasmon resonance (SPR);
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2011.2161605
