Sensor with increased sensitivity based on enhanced optical transmission in the infrared

Olga Krasnykov, Alina Karabchevsky, Atef Shalabney, Mark Auslender, I. Abdulhalim

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Using enhanced optical transmission (EOT) through periodic nanoslits in thin metal films we demonstrate sensing in water with highly enhanced sensitivity in the infrared range for the first time. This is explained as a result of the enhancement in the penetration depth in the analyte thus increasing the interaction volume which in turn increases the sensitivity and allows for sensing of large bio-entities. The penetration depth enhancement in the EOT case is found to be larger than the corresponding enhancement factor in the Kretschmann configuration.

Original languageEnglish
Pages (from-to)1435-1438
Number of pages4
JournalOptics Communications
Volume284
Issue number5
DOIs
StatePublished - 1 Mar 2011

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