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Dispersion characteristics of two-dimensional unmagnetized dielectric plasma photonic crystal

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Chinese Physics B 2010年第3期19卷 353-358页

作者：亓丽梅杨梓强兰峰高喜李大治 Institute of High Energy Electronics University of Electronic Science and Technology of China Institute for Laser Technology 2-6 Yamada-OkasuitaOsaka 565-0871Japan

This paper studies dispersion characteristics of the transverse magnetic （TM） mode for two-dimensional unmagnetized dielectric plasma photonic crystal by a modified plane wave method. First, the cutoff behaviour is made clear by using the Maxwell-Garnett effective medium theory, and the influences of dielectric filling factor and dielectric constant on effective plasma frequency are analysed. Moreover, the occurence of large gaps in dielectric plasma photonic crystal is demonstrated by comparing the skin depth with the lattice constant, and the influence of plasma frequency on the first three gaps is also studied. Finally, by using the particle-in-cell simulation method, a transmission curve in the Г - X direction is obtained in dielectric plasma photonic crystal, which is in accordance with the dispersion curves calculated by the modified plane wave method, and the large gap between the transmission points of 27 GHz and 47 GHz is explained by comparing the electric field patterns in particle-in-cell simulation.

关键词： plasma photonic crystal dispersion plane wave method particle-in-cell simulation

A Study of Properties of the photonic Band Gap of Unmagnetized plasma photonic crystal

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plasma Science and Technology 2009年第1期11卷 14-17页

作者：刘崧钟双英刘三秋 School of Sciences Nanchang University

In this study, the propagation of electromagnetic waves in one-dimensional plasma photonic crystals （PPCs）, namely, superlattice structures consisting alternately of a homogeneous unmagnetized plasma and dielectric material, is simulated numerically using the finite-difference time-domain （FDTD） algorithm. A perfectly matched layer （PML） absorbing technique is used in this simulation. The reflection and transmission coefficients of electromagnetic （EM） waves through PPCs are calculated. The characteristics of the photonic band gap （PBG） are discussed in terms of plasma density, dielectric constant ratios, number of periods, and introduced layer defect. These may provide some useful information for designing plasma photonic crystal devices.

关键词： plasma photonic crystal finite-difference time-domain method photonic band gap reflection and transmission coefficients

Spontaneous transition of one-dimensional plasma photonic crystal's orientation in a dielectric barrier discharge

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Chinese Physics B 2013年第1期22卷 292-297页

作者：范伟丽董丽芳 College of Physics Science & Technology Hebei University

A novel one-dimensional plasma photonic crystal whose crystal orientation can change spontaneously is demonstrated using a dielectric barrier discharge with two liquid electrodes. The orientation of the plasma photonic crystal will vary from transverse to longitudinal or vary from longitudinal to transverse and then revert to longitudinal by self-adjustment, while the experimental conditions are kept fixed. The dispersion relation of these plasma photonic crystals are calculated, and the changes of the photonic band diagrams during the orientation transition are studied.

关键词： plasma photonic crystal dielectric barrier discharge orientation transition photonic band diagram

Controllable and tunable plasma photonic crystals through a combination of photonic crystal and dielectric barrier discharge patterns

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plasma Science and Technology 2023年第8期25卷 74-86页

作者：郭丽婷潘宇扬于广林王朝阳高匡雅范伟丽董丽芳 Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240People's Republic of China Aviation Key Laboratory of Science and Technology on High Intensity Electromagnetic Environment Protection Anhui Province Key Laboratory of Aircraft Lightning ProtectionHefei 230031People's Republic of China

We report five types of patterns with square symmetry,including three novel types obtained by inserting a specially designed grid photonic crystal(PC)into a dielectric barrier discharge *** are studied using an intensified charge-coupled device camera and photomultiplier *** three novel types of patterns are a square pattern with one structure,a square superlattice pattern with four sublattices and a(1/4)K_(grid)(K_(grid)is the basic wave vector of the grid),and another square pattern with a complex inversion discharge *** the application viewpoint,the five types of patterns can be used as plasma photonic crystals(PPCs).Their band diagrams under a transverse-magnetic wave simulated by the finite element method show that there are a large number of band *** with the original PC with only a unidirectional band gap,the five types of PPCs have tunable and omnidirectional band gaps,which is very important in controlling the propagation of electromagnetic waves in the mm-wave *** experimental results enrich the pattern types in the dielectric barrier discharge system and provide a method for obtaining PPCs with symmetry controllability and bandgap tunability.

关键词： dielectric barrier discharge plasma photonic crystal patterns electromagnetic waves

Numerical study on the modulation of THz wave propagation by collisional microplasma photonic crystal

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plasma Science and Technology 2020年第11期22卷 42-51页

作者： Shuqun WU Yuxiu CHEN Minge LIU Lu YANG Chaohai ZHANG Shaobin LIU College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016People's Republic of China College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016People's Republic of China

In order to demonstrate the modulation of terahertz wave propagation in atmospheric pressure microplasmas,in this work,the band structure and the transmission characteristics of a onedimensional collisional microplasma photonic crystal are investigated,using the transfer matrix *** a lattice constant of 150μm and a plasma width of 100μm,three stopbands of microplasma photonic crystal are observed,in a frequency range of 0.1-5 ***,an increase in gas pressure leads to a decrease in the central frequency of the *** the gas pressure increases from 50.5 k Pa to 202 k Pa,the transmission coefficient of the THz wave first increases and then decreases at high frequency,where the wave frequency is much greater than both the plasma frequency and the collision ***,it is interesting to find that the central frequency and the bandwidth of the first THz stopband remain almost unchanged for electron densities of less than 10^15 cm^-3,increasing significantly when the electron density increases up to 10^16 cm^-3.A central frequency shift of 110 GHz,and a bandgap broadening of 200 GHz in the first stopband are *** addition,an atmospheric pressure microplasma with the electron density of 1×10^15-6×10^15 cm^-3 is recommended for the modulation of THz wave propagation by plasma photonic crystals.

关键词： microplasma plasma photonic crystal terahertz wave electron density

Transfer Matrix for Obliquely Incident Electromagnetic Waves Propagating in One Dimension plasma photonic crystals

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plasma Science and Technology 2009年第1期11卷 18-22页

作者：郭斌 Department of Physics Science and Technology Wuhan University of Technology

Based on the electromagnetic theory and by using an analytical technique-the transfer matrix method, the obliquely incident electromagnetic waves propagating in one-dimension plasma photonic crystals is studied. The dispersion relations for both the P-polarization waves and S-polarization waves, depending on the plasma density, plasma thickness and period, are discussed.

关键词： plasma photonic crystal dispersion relation electromagnetic waves

Study on the Reflection Spectra of One Dimensional plasma photonic crystals Having Exponentially Graded Materials

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plasma Science and Technology 2013年第5期15卷 443-447页

作者： S. PRASAD Vivek SINGH A. K. SINGH Department of Physics Faculty of Science Banaras Hindu University

The transfer matrix method is used to study the effect of the permittivity profile on the reflectivity of a one dimensional plasma photonic crystal having exponentially graded material. The analysis shows that the proposed structure works as a perfect mirror within a certain frequency range. These frequency ranges can be completely controlled by the permittivity profile of a graded dielectric layer. As expected we observed that these frequency ranges are also controlled by plasma parameters.

关键词： graded dielectric layer plasma photonic crystal reflectivity transfer matrixmethod

Valley-dependent topological edge states in plasma photonic crystals

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plasma Science and Technology 2023年第3期25卷 6-14页

作者：李健飞周晨姚静锋袁承勋王莹周忠祥张景文 Anatoly A KUDRYAVTSEV School of Physics Harbin Institute of TechnologyHarbin 150000People’s Republic of China Heilongjiang Provincial Key Laboratory of plasma Physics and Application Technology Harbin 150000People’s Republic of China Physics Department St.Petersburg State UniversitySt.Petersburg 198504Russia

plasma photonic crystals designed in this paper are composed of gas discharge tubes to control the flow of electromagnetic *** band structures calculated by the finite element method are consistent with the experimental results which have two distinct attenuation peaks in the ranges of 1-2.5 GHz and 5-6 *** parameters of the plasma are extracted by the Nicolson-Ross-Weir method and effective medium *** measured electron density is between 1×1011 cm-3 and1×1012 cm-3,which verifies the correctness of the parameter used in the simulation,and the collision frequency is near 1.5×1010 *** the band structures are corroborated by the measured scattering parameters,we introduce the concept of photonic topological insulator based on the quantum Valley Hall effect into the plasma photonic crystal.A valley-dependent plasma photonic crystal with hexagonal lattice is constructed,and the phase transition of the valley K(K’)occurs by breaking the spatial inversion ***-spin locked topological edge states are generated and excited by chiral *** frequency of the non-bulk state can be dynamically regulated by the electron *** concept paves the way for novel,tunable topological edge *** interestingly,the Dirac cone is broken when the electron density increases to 3.1×1012 cm-3,which distinguishes from the methods of applying a magnetic field and changing the symmetry of the point group.

关键词： plasma photonic crystal valley-dependent topological state electron density

Some New Band Characteristics in One-Dimensional plasma Dielectric photonic crystals

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plasma Science and Technology 2011年第4期13卷 392-396页

作者： Laxmi SHIVESHWARI Department of Physics K B Womens College of Vinoba Bhave University

Propagation of electromagnetic waves in one-dimensional plasma dielectric photonic crystals, the superlattice structure consisting of alternating plasma and dielectric materials, is studied theoretically for oblique incidence by using the transfer matrix method. Our results show that complete photonic band gaps for all polarizations can be obtained in one-dimensional plasma dielectric photonic crystals. These structures can exhibit a new type of band or gap, for the incidence other than the normal one, near frequencies where the electric permittivity of the plasma layer changes sign. This new band or gap arises, from the dispersive properties of the plasma layer, only for transverse magnetic polarized waves, and its width increases with the increase in incident angle. This differential behavior under polarization can be utilized in the design of an efficient polarization splitter. The existence of both photonic gaps and resonance transmission bands is demonstrated for experimentally realizable structures such as double electromagnetic barriers.

关键词： plasma photonic crystal photonic band gap permittivity