Dual-band negative index metamaterial: double negative at 813nm and single negative at 772nm

作者：Chettiar Uday K; Kildishev Alexander V; Yuan Hsiao Kuan; Cai Wenshan; Xiao Shumin; Drachev Vladimir P; Shalaev Vladimir M^*

来源：Optics Letters, 2007, 32(12): 1671-1673.

DOI：10.1364/OL.32.001671

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 linearly polarized light with a wavelength between 799 and 818 nm, and the real part of its refractive index is approximately - 1.0 at 813 nm. The ratio of -Re(n) /Im(n) is close to 1.3 at 813 nm. 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.

• 出版日期2007-6-15