Dual polarization operation of nanostructure arrays in the mid-infrared

• Published in: Applied physics letters Vol. 112; no. 7
• Main Authors: Mbomson, Ifeoma G., Mohamad Ali Nasri, Ili F., De La Rue, Richard M., Johnson, Nigel P.
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 12-02-2018
• Subjects: Applied physics; Asymmetry; Dual polarization (waves); Incident waves; Nanostructure
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.5010182

In this paper, we report on arrays of asymmetric split H-shape nanostructures tuned to produce two distinct resonances at wavelengths that range from 3 μm to 7 μm. The electric-field of the incident wave has been both polarized parallel to the vertical asymmetric dipole arms and polarized across the 50 nm gap in the asymmetric horizontal bar. We have produced resonance quality factors as large as 26 in the mid-infrared region.