Cherenkov Radiation and Photonic Crystals

摘要

A charge moving faster than the phase velocity in a medium can produces conical radiation known as Cherenkov radiation. The FDTD numerical technique is used to model this radiation process and the generated light spectrum is used to explore the optical properties of photonic crystal and quasi-crystals. It is shown that the radiation from the fast moving charge is able to provide information on the band gap and transmission spectrums, defect state wavelengths and waveguide propagation.