Propagation of adjustable anomalous hollow Gaussian beams in the cascade of left-handed and right-handed media

Abstract

In this paper, the propagation characteristics of adjustable anomalous hollow Gaussian beams are investigated in different cascaded systems composed of left-handed medium and right-handed medium. The propagation expressions of adjustable anomalous hollow Gaussian beams through different cascaded systems are derived, and the effects of negative refractive index and beam parameters on the propagation characteristics are analyzed in detail. It is found that when the negative refractive index changes, the position of the maximum axial intensity is different for different cascades. But the magnitude of the maximum axial intensity is not affected by the negative refractive index. The effects of negative refractive index and beam parameters on the beam width and intensity pattern evolution are also analyzed in detail. Although the propagation characteristics in this paper are obtained under certain parameters, it is very convenient to study the evolution characteristics under various conditions through the analytical formula obtained in this paper.