The Dispersion Characteristics of a One Dimensional Plasma Photonic Crystal Having Inhomogeneous Plasma Density Profiles

Surendra Prasad, Vivek Singh, A. K. Singh

Department of Physics, Banaras Hindu University, Varanasi, India.

DOI: 10.4236/opj.2012.223034                

Abstract

The dispersion characteristics of binary 1D-PPCs having inhomogeneous plasma in the unit cell are studied. Using the transfer matrix method the required dispersion relations are obtained. Here the linear and exponential plasma density profiles are considered and compared with the homogeneous plasma having uniform density profile. It is observed that the inhomogeneity in plasma layer highly affect dispersion curves. By comparing the dispersion curves obtained in all considered cases, it is found that the widths of band gaps and phase velocities are always larger for exponential density profile than the linear uniform density profiles in the considered frequency range.

Keywords

Plasma Photonic Crystal; Inhomogeneous Plasma Density; Dispersion Characteristics; Linear Plasma Density Profile; Exponentially Plasma Density Profile

Conflicts of Interest

The authors declare no conflicts of interest.

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