Journal ArticleDOI
Experimental studies of two-dimensional coaxial Bragg structures for a high-power free-electron maser
Adrian W. Cross,Ivan Konoplev,Kevin Ronald,Alan D. R. Phelps,Wenlong He,Colin G. Whyte,Naum S. Ginzburg,N. Yu. Peskov,A. S. Sergeev +8 more
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TLDR
In this article, the experimental studies of two-dimensional (2D) coaxial Bragg structures are presented, which realize 2D distributed feedback, have been recently proposed as a method of producing gigawatt power level spatially coherent radiation from a free-electron maser driven by a large-size relativistic electron beam of annular geometry.Abstract:
The experimental studies of two-dimensional (2D) coaxial Bragg structures are presented. These structures, which realize 2D distributed feedback, have been recently proposed as a method of producing gigawatt power level spatially coherent radiation from a free-electron maser driven by a large-size relativistic electron beam of annular geometry. The experimentally obtained frequency dependence of transmission coefficients for the 2D Bragg structures are in good agreement with theoretical predictions that demonstrates the operation of the two-dimensional Bragg scattering mechanism.read more
Citations
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Journal ArticleDOI
Wave interference and band gap control in multiconductor one-dimensional Bragg structures
TL;DR: In this paper, a theoretical study of scattering and interference of waves in one-dimensional (1D) Bragg structures, also known as photonic band-gap (PBG) structures, based on multiconductor waveguides is presented.
Journal ArticleDOI
High-current oversized annular electron beam formation for high-power microwave research
Ivan Konoplev,Adrian W. Cross,P. MacInnes,Wenlong He,Colin G. Whyte,Alan D. R. Phelps,Craig Robertson,Kevin Ronald,A. R. Young +8 more
TL;DR: In this paper, a high-current accelerator capable of producing thin (2mm) annular, mildly relativistic (450keV) electron beams (up to 1.5kA) of diameter of 70mm was demonstrated with the electron beam current at the beam channel output measured using a Rogowski coil.
Journal ArticleDOI
Tunable terahertz band planar Bragg reflectors
N. S. Ginzburg,Andrey M. Malkin,N. Yu. Peskov,A. S. Sergeev,V. Yu. Zaslavsky,K. Kamada,Yukihiro Soga +6 more
TL;DR: In this paper, a planar narrow-band Bragg reflector based on coupling of the two propagating modes and a cutoff mode is considered, and coupled-wave analysis together with direct numerical simulations demonstrate operation of the proposed scheme up to the terahertz frequency band.
Journal ArticleDOI
Observation of photonic band-gap control in one-dimensional Bragg structures
TL;DR: In this paper, the results of experimental studies of scattering and interference of waves in one-dimensional photonic band-gap structures based on coaxial waveguides with corrugated inner and outer conductors are presented.
Journal ArticleDOI
Cylindrical, periodic surface lattice—Theory, dispersion analysis, and experiment
TL;DR: In this article, a two-dimensional surface lattice of cylindrical topology obtained via perturbing the inner surface of a cylinder is considered, where periodic perturbations of the surface lead to observation of high-impedance dielectric-like media and resonant coupling of surface and non-propagating volume fields.
References
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Inhibited Spontaneous Emission in Solid-State Physics and Electronics
TL;DR: If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden.
BookDOI
Photonic band gaps and localization
TL;DR: In this article, the authors present an accurate measurement of backscattered light from Random Media and calculate the plane-wave distance between two angles of incidence (AoI) in two dimensions.
Journal ArticleDOI
Theory and design of a free-electron maser with two-dimensional feedback driven by a sheet electron beam
Naum S. Ginzburg,N.Y. Peskov,A. S. Sergeev,Alan D. R. Phelps,Ivan Konoplev,Gordon R. M. Robb,Adrian W. Cross,Andrey V. Arzhannikov,Stanislav L. Sinitsky +8 more
TL;DR: A time-domain analysis of the excitation of an open 2D Bragg resonator by asheet electron beam demonstrates that a single-mode steady-state oscillation regime may be obtained for a sheet electron beam of width 100-1000 wavelengths.
Journal ArticleDOI
Dynamics of free-electron lasers with two-dimensional distributed feedback
TL;DR: In this paper, the authors studied the processes of oscillations build-up and spatial synchronization in FEL's with two-dimensional distributed feedback driven by a large size sheet and tubular relativistic electron beams.
Journal ArticleDOI
First operation of a powerful FEL with two-dimensional distributed feedback
N.V. Agarin,Andrey V. Arzhannikov,V.B. Bobylev,Naum S. Ginzburg,V.G. Ivanenko,Petr V. Kalinin,Sergei A. Kuznetsov,N. Yu. Peskov,A. S. Sergeev,Stanislav L. Sinitsky,V. D. Stepanov +10 more
TL;DR: In this article, a W-band FEL of planar geometry driven by a sheet electron beam was realized using the pulse accelerator ELMI (0.8 MeV/3kA/5μs).