2015
DOI: 10.1109/tps.2015.2493001
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Propagation Properties of Terahertz Waves in a Time-Varying Dusty Plasma Slab Using FDTD

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Cited by 53 publications
(24 citation statements)
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“…From Figures 3 and 5, it is noted that the self-focusing and absorption phenomena of high-power laser beams in plasma are evident as compared with those propagating in free space as illustrated in Figures 1 and 2. The physical model of permittivity with ponderomotive nonlinearity given by Equation (8) determines that the refractive index of plasma is smaller at the place where the light intensity is lower and larger where the light intensity is stronger. The ensuing inhomogeneous distribution of refractive-index attribute to the self-focusing effect and the laser beam is therefore focused when this effect overly counteracts the natural diffractive divergence of the laser beam.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…From Figures 3 and 5, it is noted that the self-focusing and absorption phenomena of high-power laser beams in plasma are evident as compared with those propagating in free space as illustrated in Figures 1 and 2. The physical model of permittivity with ponderomotive nonlinearity given by Equation (8) determines that the refractive index of plasma is smaller at the place where the light intensity is lower and larger where the light intensity is stronger. The ensuing inhomogeneous distribution of refractive-index attribute to the self-focusing effect and the laser beam is therefore focused when this effect overly counteracts the natural diffractive divergence of the laser beam.…”
Section: Discussionmentioning
confidence: 99%
“…The main research areas have focused on the propagation characteristics of high-power laser beams in plasma [4][5][6]. The Drude model of electrical conduction is extensively considered in this research field [7,8]. Sharma et al [9] have found that the propagation characteristics of an intense laser beam in plasma depend on the power and width of the beam and the ratio of plasma frequency and light wave frequency.…”
Section: Introductionmentioning
confidence: 99%
“…Dependences of the refractive ( ) and absorption ( ) indices in a dusty plasma on the ratio / for various concentrations of dust particles. The calculation parameters are = 1 × 10 −6 m, = 1 × 10 19 m −3 , = 1 × 10 19 m −3 , = 10 eV and = 0.1 a number of works [24,[40][41][42][43][44][45][46][47][48][49][50][51]. In so doing, a number of simplifications and assumptions in Eqs.…”
Section: Refractive and Absorption Indicesmentioning
confidence: 99%
“…In so doing, a number of simplifications and assumptions in Eqs. (43)- (46) are often made [24,[33][34][35][40][41][42][43][44][45][46][47][48][49][50][51].…”
Section: Refractive and Absorption Indicesmentioning
confidence: 99%
“…[5][6][7][8] These methods can be grossly divided into two categories: based on manipulating the distribution or physical characteristics of the plasma sheath, such as aerodynamic shaping, 6 magnetic windows, 7 and electrophile injection, 8 the E × B field interaction 9 and the transient strong magnetic pulse, 10 and based on changing radio propagation models, such as three-wave scattering theory 11,12 and increasing the radio frequency to the Ka band even the terahertz. 13 These methods can reduce the attenuation caused by the plasma sheath and ensure that the radio waves can effectively penetrate the plasma sheath. However, when boundary layer becomes turbulent (plasma sheath becomes time-varying), plasma effects on the electromagnetic wave propagation are much more complex.…”
Section: Introductionmentioning
confidence: 99%