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Title: A 1-D dusty plasma photonic crystal

It is demonstrated numerically that a 1-D plasma crystal made of micron size cylindrical dust particles can, in principle, work as a photonic crystal for terahertz waves. The dust rods are parallel to each other and arranged in a linear string forming a periodic structure of dielectric-plasma regions. The dispersion equation is found by solving the waves equation with the boundary conditions at the dust-plasma interface and taking into account the dielectric permittivity of the dust material and plasma. The wavelength of the electromagnetic waves is in the range of a few hundred microns, close to the interparticle separation distance. The band gaps of the 1-D plasma crystal are numerically found for different types of dust materials, separation distances between the dust rods and rod diameters. The distance between levitated dust rods forming a string in rf plasma is shown experimentally to vary over a relatively wide range, from 650 μm to about 1350 μm, depending on the rf power fed into the discharge.
Authors:
;  [1] ; ; ;  [1] ;  [2]
  1. National Institute for Laser, Plasma and Radiation Physics, 077125 Bucharest (Romania)
  2. (Romania)
Publication Date:
OSTI Identifier:
22218003
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 114; Journal Issue: 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BOUNDARY CONDITIONS; CRYSTALS; CYLINDRICAL CONFIGURATION; DIELECTRIC MATERIALS; DISPERSIONS; DISTANCE; DUSTS; ELECTROMAGNETIC RADIATION; INTERFACES; PARTICLES; PERMITTIVITY; PLASMA; WAVE EQUATIONS; WAVELENGTHS