Slow surface phonon polaritons for sensing in the midinfrared spectrum

Igal Balin; Nir Dahan; Vladimir Kleiner; Erez Hasman

doi:10.1063/1.3098360

Slow surface phonon polaritons for sensing in the midinfrared spectrum

Igal Balin, Nir Dahan, Vladimir Kleiner, Erez Hasman

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

We demonstrate a reflection-type sensor in the midinfrared spectra based on resonant excitation of surface phonon polaritons (SPhPs). In this range, SPhPs are characterized by the high density of states associated with slow surface waves that lead to enhanced resonance absorption. Delocalized SPhPs were excited by irradiating TM-polarized light on a one-dimensional grating embedded in a SiC substrate. The sensor response was characterized by changing the refractive index (RI) of a lossless CO₂ gas. A detection limit of 2× 10^-5 RI units was obtained at a wavelength of 11.9 μm.

Original language	English
Article number	111112
Journal	Applied Physics Letters
Volume	94
Issue number	11
DOIs	https://doi.org/10.1063/1.3098360
State	Published - 31 Mar 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "We demonstrate a reflection-type sensor in the midinfrared spectra based on resonant excitation of surface phonon polaritons (SPhPs). In this range, SPhPs are characterized by the high density of states associated with slow surface waves that lead to enhanced resonance absorption. Delocalized SPhPs were excited by irradiating TM-polarized light on a one-dimensional grating embedded in a SiC substrate. The sensor response was characterized by changing the refractive index (RI) of a lossless CO2 gas. A detection limit of 2× 10-5 RI units was obtained at a wavelength of 11.9 μm.",

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AU - Dahan, Nir

AU - Kleiner, Vladimir

AU - Hasman, Erez

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Y1 - 2009/3/31

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AB - We demonstrate a reflection-type sensor in the midinfrared spectra based on resonant excitation of surface phonon polaritons (SPhPs). In this range, SPhPs are characterized by the high density of states associated with slow surface waves that lead to enhanced resonance absorption. Delocalized SPhPs were excited by irradiating TM-polarized light on a one-dimensional grating embedded in a SiC substrate. The sensor response was characterized by changing the refractive index (RI) of a lossless CO2 gas. A detection limit of 2× 10-5 RI units was obtained at a wavelength of 11.9 μm.

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JO - Applied Physics Letters

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Slow surface phonon polaritons for sensing in the midinfrared spectrum

Abstract

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