Properties of Optical Soliton in a Three Level Medium with Quintic Nonlinearity

Preeti Agarwal^1, , A. Ray¹ and A. Roy Chowdhury¹

¹High Energy Physics Division, Department of Physics, Jadavpur University, Calcutta – 700032, India

Cite this paper:
Preeti Agarwal, A. Ray and A. Roy Chowdhury. Properties of Optical Soliton in a Three Level Medium with Quintic Nonlinearity. International Journal of Physics. 2015; 3(2):45-51. doi: 10.12691/ijp-3-2-1

Abstract

Propagation characteristics of optical soliton in a three level atomic medium are analyzed by treating the material medium quantum mechanically, but the electromagnetic wave classically. Both the cubic and quintic components of the nonlinear polarization of the electromagnetic field are considered along with those generated dueto the dipole formation of the material. A numerical simulation is carried out with the help of split-step technique. It is observed that the power of the pulse, distance of propagation and degree of dispersion are intimately related. The role of polarization due to the material is duely compensated by keeping higher order dispersive terms. In this connection we have seen that keeping the higher order dispersive terms, up to the eighth order, which is actually the phenomenon of continuum generation, results in a better form of the pulse. In our paper, we have analyzed the effects in both the cases, that is, including and excluding the quintic terms and in each case we have considered the effects of second-order dispersion (β₂) as well as the higher order dispersion terms .

Keywords:
three level atomic system Self Induced Transparency-Non Linear Schrödinger soliton split-step technique continuum generation

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