Unidirectional band gaps in uniformly magnetized two-dimensional magnetophotonic crystals

Details Unidirectional band gaps in uniformly magnetized two-dimensional magnetophotonic crystals Unidirectional band gaps in uniformly magnetized two-dimensional magnetophotonic crystals

2009-06-22

arxiv.org/abs/0906.3984v1

Physics

Optics

4 pages, 3 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevB.80.121102

By exploiting the concepts of magnetic group theory we show how unidirectional behavior can be obtained in two-dimensional magneto-photonic crystals (MOPhC) with uniform magnetization. This group theory approach generalizes all previous investigations of one-way MOPhCs including those based on the use of antiparallel magnetic domains in the elementary crystal cell. Here, the theoretical approach is illustrated for one MOPhC example where unidirectional behavior is obtained by appropriately lowering the geometrical symmetry of the elementary motifs. One-way transmission is numerically demonstrated for a photonic crystal slice.

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