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Proceedings Paper

Method for enhanced infrared spectroscopy of molecules with nanorod arrays
Author(s): Clément Tardieu; Grégory Vincent; Nathalie Bardou; Riad Haïdar; Stéphane Collin
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Paper Abstract

Recent studies led in the field of infrared spectroscopy focused on the use of nanoantennas to enhance electromagnetic field on the bonds of molecules, in order to improve detection. We propose to take benefit from dipolar optical resonances in dielectric free-standing nanorod arrays as an innovative component to achieve spectroscopy in the mid-infrared wavelength range. The particularity of this component is not only to allow electromagnetic field enhancement, but also its ability to shift spectrally the resonance according to incidence angle. Spectroscopy is thus possible on a wide wavelength range for a given geometry of the nanorods. We present here numerical studies of the impact of the size of nanorods on the reflection spectra. We use the permittivity of a test molecule determined by transmission spectra. In addition, we introduce the fabrication process, transmission and reflection measurements of nanorods.

Paper Details

Date Published: 29 April 2016
PDF: 6 pages
Proc. SPIE 9899, Optical Sensing and Detection IV, 98990L (29 April 2016); doi: 10.1117/12.2227635
Show Author Affiliations
Clément Tardieu, ONERA (France)
Lab. de Photonique et de Nanostructures (France)
Grégory Vincent, ONERA (France)
Nathalie Bardou, Lab. de Photonique et de Nanostructures (France)
Riad Haïdar, ONERA (France)
Stéphane Collin, Lab. de Photonique et de Nanostructures (France)


Published in SPIE Proceedings Vol. 9899:
Optical Sensing and Detection IV
Francis Berghmans; Anna G. Mignani, Editor(s)

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