arXiv subjects

V. G. Veselago

Publications and source records attributed to V. G. Veselago.

2 recordsLinked to original sources

arXiv2005

Superlens as matching device

The question is considered about possibility of overcoming diffraction limit at device, named superlens. This device is a flat slab, executed from material with index of refraction n,equal n=-1. It is shown, what this device really can focus the radiation to the spot, smaller than wavelength, but herewith superlens works not as optical instrument, based on the laws of geometric optics, but as certain matching device, for which does not exist diffraction limit. This is possible if thickness of superlens is comparable with wavelength, and distances from superlense to the wave source and to its image are also in order of wavelength.

cond-mat.other↗

arXiv2002

About the wording of Fermat`s principle for light propagation in media with negative refraction index

In this work is elaborated the wording of Fermat`s principle for electromagnetic waves spreading in materials with negative index of refractions (MNR). The recent experiments with such material has confirmed their main characteristics, predicted earlier. It is shown that for MNR not applicable wording of Fermat`s principle through minimum (or extremum) of time of spreading the wave between two points. The correct wording for this case is a wording through extremum of total optical length for way between two points moreover optical length at passing of wave through MNR is taken negative. In paper are considered some properties of original flat lenses, executed from MNR.

cond-mat↗