Publication

Refractive index sensing with an air-slot photonic crystal nanocavity

Romuald Houdré, Hua Zhang, Nicolas Le Thomas, Zhaolu Diao, Jana Jágerská
2010
Journal Articles

Abstract

We investigate an air-slot photonic crystal cavity for high-precision refractive index sensing. The high quality factor ∼2:6 × 10^4 of the cavity, along with a strong overlap between the resonant mode and the hollow core region, allows us to achieve an experimental sensitivity of 510 nm per refractive index unit (RUI) and a detection limit below 1 × 10^−5 RUI. The device has a remarkably low sensing volume of 40 aliters, holding less than 1 × 10^6 molecules.

Official source

https://infoscience.epfl.ch/entities/publication/53230cf6-2fd1-4e7e-af3f-61a51513aa1b

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Refractive index sensing with an air-slot photonic crystal nanocavity

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