Difference between penetration and damping lengths in photonic crystal mirrors

Details Difference between penetration and damping lengths in photonic crystal mirrors Difference between penetration and damping lengths in photonic crystal mirrors

2009-05-27

arxiv.org/abs/0905.4449v2

Appl. Phys. Lett. 95(21), 211101 (2009)

Physics

Condensed Matter

Other Condensed Matter

to be published in Applied Physics Letters, 4 pages, 4 figures

Scientific paper

10.1063/1.3266840

Different mirror geometries in two-dimensional photonic crystal slabs are studied with fully-vectorial calculations. We compare their optical properties and, in particular, we show that, for heterostructure mirrors, the penetration length associated with the delay induced by distributed reflection is not correlated to the characteristic damping length of the electromagnetic energy distribution in the mirror. This unexpected result evidences that the usual trade-off between short damping lengths and large penetration lengths that is classically encountered in distributed Bragg reflectors can be overcome with carefully designed photonic crystal structures.

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