Spatial distribution of Cherenkov radiation in periodic dielectric media

Details Spatial distribution of Cherenkov radiation in periodic dielectric media Spatial distribution of Cherenkov radiation in periodic dielectric media

2009-05-18

arxiv.org/abs/0905.2831v1

Physics

Optics

14 pages, 5 figures, Journal of Optics A (in press)

Scientific paper

The nontrivial dispersion relation of a periodic medium affects both the spectral and the spatial distribution of Cherenkov radiation. We present a theory of the spatial distribution of Cherenkov radiation in the far-field zone inside arbitrary three- and two-dimensional dielectric media. Simple analytical expressions for the far-field are obtained in terms of the Bloch mode expansion. Numerical examples of the Cherenkov radiation in a two-dimensional photonic crystal is presented. The developed analytical theory demonstrates good agreement with numerically rigorous finite-difference time-domain calculations.

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