Analysis of tunable photonic band structure in an extrinsic plasma photonic crystal

•Tunable PBSs in an extrinsic plasma photonic crystal are analyzed.•The gap width is strongly dependent on the applied magnetic field.•Wide gap can be obtained at a higher electron density.

In this work, we theoretically investigate the tunable photonic band structure (PBS) for an extrinsic plasma photonic crystal (PPC). The extrinsic PPC is made of a bulk cold plasma layer which is influenced by an externally periodic static magnetic field. The PBS can be tuned by the variation of the magnitude of externally applied magnetic field. In addition, we also show that the PBS can be changed as a function of the electron density as well as the thickness variation.

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