Transformation of electromagnetic wave polarization by the resonance in a thin solid-plasma film

Бакунов, М. И.; Жуков, С. Н.

doi:10.1163/156939396x00784

Cited by 3 publications

(3 citation statements)

References 5 publications

(4 reference statements)

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“…( 18 ) that the polarisation of the electric field on the z -plane at any time t is related to the electric field amplitude, and the transient polarisation component along the y -direction lags phases in the x -direction. Due to the vector nature of electromagnetic waves, polarisation characteristics can deal with target characteristic signals and capture rich target information (Løseth and Ursin 2007 ; Bakunov and Zhukov 2012 ). At t = 45 ns, analyse the characteristic polarisation field of the double-layer metal ball model at the longitudinal position z = 0.35 m and the upper dielectric z = 0.125 m. The electric field plane wave polarisation of the array radar based on the plane wave observation method is shown in Fig.…”

Section: Application Of Gpr Array Based On Planar Beam Signal In Different Geological Modelsmentioning

confidence: 99%

Research on application of ground penetrating radar array method based on plane beam signal in different geological models

et al. 2021

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The traditional common-offset ground penetrating radar method measures point by point along the survey line with a single transmitter and a single receiver. Due to the influence of the antenna radiation power and the low-pass filtering function of the earth medium, an intense amplitude gain cannot be obtained when the signal is intercepted. This article addresses a plane beam signal ground penetrating radar array observation method based on high radiation power gain. The transmitting antenna array simultaneously excites the pulse signal with the same centre frequency. All the transmitted signals interfere with each other at the near surface to form a plane beam signal, and the electromagnetic energy is superimposed mutually to increase the radiation power. We applied the plane beam signal ground penetrating radar array method to different geological models constructed by the finite difference time-domain (FDTD) algorithm for numerical simulation in this research. Since there are various offsets in the array ground penetrating radar observation method, we introduce a composite frequency shift-perfect matching layer (CFS-PML) based on the recursive convolution method as the absorbing boundary condition. It eliminates the problem of secondary reflection caused by the angle variation of the incident wave. The research result shows that the plane beam signal illuminates the target uniformly in space, can eliminate the discontinuity in profile data caused by the directivity of the antenna, improve the stability and quality of the echo signal, and enrich the target response parameters.

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Section: Application Of Gpr Array Based On Planar Beam Signal In Different Geological Modelsmentioning

confidence: 99%

Research on application of ground penetrating radar array method based on plane beam signal in different geological models

et al. 2021

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“…In fact, some phenomena such as Faraday-rotation or dual-refraction will occur when EM wave propagates in magnetized plasma [22][23][24], which means magnetized plasma can evidently change the EM wave polarization. Polarization characteristics of scattered EM signals provide important information about physical conditions in the area of localization of the sources and about the medium parameters on the path of wave propagation, so the analysis of the variance of polarization characteristics of EM waves that pass through a magnetized plasma slab is very important in many practical applications such as communication through the plasma sheath and plasma stealth [22][23][24][25]. The transformation of EM wave polarization under reflection from thin solid-plasma film on the conditions of plasma resonance was investigated by Bakunov and Zhukov [25].…”

Section: Introductionmentioning

confidence: 99%

“…Polarization characteristics of scattered EM signals provide important information about physical conditions in the area of localization of the sources and about the medium parameters on the path of wave propagation, so the analysis of the variance of polarization characteristics of EM waves that pass through a magnetized plasma slab is very important in many practical applications such as communication through the plasma sheath and plasma stealth [22][23][24][25]. The transformation of EM wave polarization under reflection from thin solid-plasma film on the conditions of plasma resonance was investigated by Bakunov and Zhukov [25]. The variance of the Faraday angle was studied in [23] and [24] by the wave equation incorporated with the nonlinear dielectric function and by the perturbation method, respectively.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Propagation and Polarization Characteristics of Electromagnetic Waves Through Nonuniform Magnetized Plasma Slab Using Propagator Matrix Method

Yin¹,

Hou²,

Sun³

et al. 2013

PIER

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Abstract-An analytical technique referred to as the propagator matrix method (PMM) is presented to study the problem of electromagnetic (EM) waves interacting with the nonuniform magnetized plasma. In this method, the state vector is proposed to describe the characteristics of eigen waves in anisotropic medium, and state vectors at two different locations are related with each other by the propagator matrix. This method can be used to deal with the phenomenon of the transformation of EM wave polarization induced by anisotropic magnetized plasma, besides the conventional propagation characteristics through plasma slab, which overcomes the drawback of other analytical methods introduced in former studies. The EM problem model considered in this work is a steady-state, two-dimensional, nonuniform magnetized plasma slab with arbitrary magnetic declination angle, which is composed of a number of subslabs. Each subslab has a fixed electron density, and the overall density profile across the whole slab follows any practical distribution function. Based on PMM, a significant feature of strong transformation of EM wave polarization is addressed when an incident wave normally projects on the slab, which leads to the reflected or transmitted waves containing two kinds of waves, i.e., the co-polarized wave and the cross-polarized wave. The effects of varying the plasma parameters on the reflected and transmitted powers of co-polarization and cross-polarization, as well as the absorptive power

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Transient input of an electromagnetic wave into an open waveguide coated with nonstationary plasma film

Бакунов¹,

Maslov

1998

Journal of Applied Physics

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A technique to input an electromagnetic wave into an open planar waveguiding structure is presented. That is, we propose to coat the waveguide with a thin semiconductor film whose free electron density is controlled by laser pulses. The transient processes which follow the electron density shift in the coating film give rise to the effective coupling between the incident electromagnetic wave and local modes of the waveguiding structure and consequently lead to the creation of the guided modes. We analyze frequencies and amplitudes of the excited guided waves as well as characteristics of the transient radiation from the coating film. Due to the relative simplicity, small size, and as a result fast temporal response, the proposed scheme may find application as a part of integrated circuits for the submillimeter wave range.

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Transformation of electromagnetic wave polarization by the resonance in a thin solid-plasma film

Cited by 3 publications

References 5 publications

Research on application of ground penetrating radar array method based on plane beam signal in different geological models

Research on application of ground penetrating radar array method based on plane beam signal in different geological models

Analysis of Propagation and Polarization Characteristics of Electromagnetic Waves Through Nonuniform Magnetized Plasma Slab Using Propagator Matrix Method

Transient input of an electromagnetic wave into an open waveguide coated with nonstationary plasma film

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