Refractive index sensing with an air-slot photonic crystal nanocavity.
- Jágerská J Institut de Physique de la Matière Condensée, Ecole Polytechnique Fédérale de Lausanne (EPFL),Station 3, CH-1015 Lausanne, Switzerland. jana.jagerska@epfl.ch
- Zhang H
- Diao Z
- Le Thomas N
- Houdré R
- 2010-08-04
Published in:
- Optics letters. - 2010
English
We investigate an air-slot photonic crystal cavity for high-precision refractive index sensing. The high quality factor approximately 2.6x10(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 510nm per refractive index unit (RUI) and a detection limit below 1x10(-5)RUI. The device has a remarkably low sensing volume of 40aliters, holding less than 1x10(6)molecules.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1364/OL.35.002523
- PMID 20680045
- Persistent URL
- https://folia.unifr.ch/global/documents/10104
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