Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial

doi:10.1088/1674-1056/24/4/044207

›› 2015, Vol. 24 ›› Issue (4): 44207-044207.doi: 10.1088/1674-1056/24/4/044207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial

A. Keshavarz, M. Naseri

Department of Physics, Shiraz University of Technology, Shiraz, Iran

收稿日期:2014-06-23 修回日期:2014-08-09 出版日期:2015-04-05 发布日期:2015-04-05

Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial

A. Keshavarz, M. Naseri

Department of Physics, Shiraz University of Technology, Shiraz, Iran

Received:2014-06-23 Revised:2014-08-09 Online:2015-04-05 Published:2015-04-05
Contact: A. Keshavarz E-mail:Keshavarz@sutech.ac.ir

摘要/Abstract

摘要： In this paper the propagation of elegant Hermite-cosh-Gaussian, elegant Laguerre Gaussian, and Bessel Gaussian beams through a Kerr left-handed metamaterial (LHM) slab have been studied. A split-step Fourier method is used to investigate the propagation of laser beams through this media. Numerical simulation shows that Gaussian beams have different focusing behaviors in a Kerr LHM slab with positive or negative nonlinearity. Beam focusing happens in slabs with positive nonlinearity and not in slabs with negative nonlinearity; however, negative nonlinearity is required for a Kerr LHM slab to act like a lens. Additionally, the focusing properties of beams can be controlled by controlling the thickness of the slab or the input power of the incident beam. A multilayer structure is also proposed to have beam focusing by thinner slabs and passing longer distances.

关键词: Kerr-type left-handed metamaterial, Gaussian beams family, split-step Fourier method

Abstract: In this paper the propagation of elegant Hermite-cosh-Gaussian, elegant Laguerre Gaussian, and Bessel Gaussian beams through a Kerr left-handed metamaterial (LHM) slab have been studied. A split-step Fourier method is used to investigate the propagation of laser beams through this media. Numerical simulation shows that Gaussian beams have different focusing behaviors in a Kerr LHM slab with positive or negative nonlinearity. Beam focusing happens in slabs with positive nonlinearity and not in slabs with negative nonlinearity; however, negative nonlinearity is required for a Kerr LHM slab to act like a lens. Additionally, the focusing properties of beams can be controlled by controlling the thickness of the slab or the input power of the incident beam. A multilayer structure is also proposed to have beam focusing by thinner slabs and passing longer distances.

Key words: Kerr-type left-handed metamaterial, Gaussian beams family, split-step Fourier method

中图分类号: (Nonlinear optics)

42.65.-k

78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials) 42.65.Jx (Beam trapping, self-focusing and defocusing; self-phase modulation)

A. Keshavarz, M. Naseri. Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial[J]. , 2015, 24(4): 44207-044207.

A. Keshavarz, M. Naseri. Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial[J]. Chin. Phys. B, 2015, 24(4): 44207-044207.

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Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial

Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial

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