Izvestiya of Saratov University.
ISSN 1817-3020 (Print)
ISSN 2542-193X (Online)


отрицательная рефракция

Why the Refractive Index Couldn't Be Negative

It had been shown that for left-handed metamaterials and generally for negative refraction media the refraction index could not be introduced uniformly and could not be considered as real, especially as negative. This index for above referred media is not expedient.

Negative Dispersion, Refraction and Backward Polaritons: Impedance Approach

Background and Objectives: The dispersion equations of surface plasmon-polaritons are derived for the general case of layered dissipative structures. The waves are classified as gliding with energy flow into structure from vacuum and leakage ones. The dispersion equations and conditions for the existence of slow and fast gliding and leaky waves, as well as forward and backward waves are considered.