Dual-Band Negative Index Metamaterial: Double-Negative at 813 nm and Single-Negative at 772 nm

Abstract

This work is concerned with the experimental demonstration of a dual-band negative index metamaterial. The sample is double-negative (showing both a negative effective permeability and a negative effective permittivity) for wavelengths between 799 and 818 nm of linearly polarized light with a real part of refractive index of about -1.0 at 813 nm; the ratio -Re(n)/Im(n) is close to 1.3 at that wavelength. For an orthogonal polarization, the same sample also exhibits a negative refractive index in the visible (at 772 nm). The spectroscopic measurements of the material are in good agreement with the results obtained from a finite element electromagnetic solver for the actual geometry of the fabricated sample at both polarizations.

3 pages, 4 figures

References in corpus (3)

• Negative-index metamaterial at 780 nm wavelength
• A negative permeability material at red light
• Negative index metamaterial combining magnetic resonators with metal films

Cited by in corpus (7)

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• Polarization-sensitive propagation in an anisotropic metamaterial with double-sheeted hyperboloid dispersion relation
• Molding the flow of light at deep sub-wavelength scale
• Design of double-negative metamaterials using single-layer plasmonic structures