Title :
Single nano-particle sensing exploiting crossed polarizers to improve the signal-to-noise ratio
Author :
Grepstad, Jon O. ; Kaspar, P. ; Solgaard, Olav ; Johansen, Ib-Rune ; Sudbo, Aasmund
Author_Institution :
Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
Crossed polarized excitation and detection has been used to improve signal-to-noise ratio in an optical nano-particle sensor exploiting guided-resonance-modes in photonic crystal membranes. The sensor can detect particles with a diameter less than 40 nm.
Keywords :
image sensors; nanoparticles; nanophotonics; nanosensors; optical noise; optical polarisers; optical sensors; photonic crystals; crossed polarized detection; crossed polarized excitation; crossed polarizers; guided-resonance-modes; optical nanoparticle sensor; particle detection; photonic crystal membranes; signal-to-noise ratio; single nanoparticle sensing; Biomedical optical imaging; Biomembranes; Optical device fabrication; Optical imaging; Optical polarization; Optical sensors; Phase change materials;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
