Cherenkov Emission Generated by a Modulated Source in 2D Dispersive Photonic Crystal Slabs

This work presents a systematic numerical study of Cherenkov optical radiation generated by a modulated source that moves with uniform velocity on a two-dimensional (2D) photonic crystal (PCr) slab surface. We apply the FDTD technique with emphasis on the dispersion properties of the periodic medium...

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Bibliographic Details
Published in:Advances in materials science and engineering 2020, Vol.2020 (2020), p.1-9
Main Authors: Gallardo-Heredia, Marisol, Rodríguez-Garcia, Carlos, Burlak, Gennadiy N., Martínez-Sánchez, Erika, Avila-López, Ulises
Format: Article
Language:English
Subjects:
Dispersion
Fourier transforms
Light
Numerical analysis
Optical radiation
Oscillations
Photonic crystals
Simulation
Velocity
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Summary:This work presents a systematic numerical study of Cherenkov optical radiation generated by a modulated source that moves with uniform velocity on a two-dimensional (2D) photonic crystal (PCr) slab surface. We apply the FDTD technique with emphasis on the dispersion properties of the periodic medium to perform our numerical analysis. The field oscillations generated at the passage of a modulated source in the PCr produce a series of spectral resonances corresponding to the eigenmodes in the spatial frequency domain for the photonic slab. The amplitudes of the field oscillations have maximal values in the group cone closely to the path of the moving charge.
ISSN:1687-8434
1687-8442
DOI:10.1155/2020/7431915