Zobrazeno 1 - 10
of 28
pro vyhledávání: '"G. D. Bogomolov"'
Autor:
A. I. Kleev, G. D. Bogomolov
Publikováno v:
Journal of Communications Technology and Electronics. 56:1179-1185
The problem on the eigenmodes of a 2D open resonator is solved with the help of the method of extended boundary conditions. A modification of this method that makes it possible to substantially enhance the accuracy of computation is proposed. The res
Autor:
G. D. Bogomolov, A. I. Kleev
Publikováno v:
Journal of Communications Technology and Electronics. 56:1079-1085
The problem of the eigenmodes of a 2D open resonator is solved. Two polarizations are considered. Eigenmodes in resonators with various mirror shapes are investigated. The results of a rigorous approach are compared to the results obtained with the h
Publikováno v:
Journal of Communications Technology and Electronics. 55:1231-1238
A technique and results of the solution of the problem on excitation of an open mirror resonator coupled with a waveguide via a slot in one of the mirrors are presented. The effect of the coupling slot on the radiation loss is analyzed. The results o
Publikováno v:
Journal of Communications Technology and Electronics. 55:603-615
A technique and results of solution of the problem on plane-wave excitation of an open quasioptic resonator and a quasi-optic resonator located in an oversize waveguide are presented. Structures with various shapes of the mirror are investigated. The
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 603:52-55
Geodesic elements (prisms, lenses, and beam splitters) are suggested to control (focus, deflect, and split) beams of terahertz (THz) surface plasmons (SPs). A geodesic deflector made in the form of conical trench crossing a SP beam can be effectively
Publikováno v:
Instruments and Experimental Techniques. 52:74-78
Mesh band-pass filters for 300-, 450-, 600-, and 750-GHz central frequencies are designed and manufactured. Copper and aluminum foil and foil-clad Teflon filters were made by chemical and ionic etching methods, and an aluminum film evaporated on a ka
Autor:
Young Uk Jeong, G. N. Zhizhin, V. V. Zavialov, Byung Cheol Lee, G. D. Bogomolov, Seong Hee Park, A. K. Nikitin, Hyuk Jin Cha
Publikováno v:
Infrared Physics & Technology. 49:108-112
Absorption of surface plasmons (SP) guided by metal surface covered with a transparent layer (“cladding layer”) at terahertz frequencies has been studied both experimentally and by computer simulations. It was found that presence of the layer may
Autor:
Lee Byung Cheol, Hyuk Jin Cha, V. V. Zavialov, G. N. Zhizhin, Jeong Young Uk, A. K. Nikitin, Seong Hee Park, G. D. Bogomolov
Publikováno v:
Optics and Spectroscopy. 100:734-738
The effect of a thin dielectric cladding layer of a metal on the absorption of surface plasmons (SPs) in the terahertz frequency range is studied experimentally and numerically. It is found that, as the radiation wavelength increases, the attenuation
Autor:
G. D. Bogomolov, Uk Young Jeong, Byung Cheol Lee, G.N. Zhizhin, A. K. Nikitin, Grigory Kazakevich, V. V. Zavyalov
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 543:96-101
First experiments for observation of surface electromagnetic waves (SEW) in the terahertz spectral range generated on dense aluminum films covering the optical quality glass plates are presented in this paper. Coherent radiation of the new free-elect
Publikováno v:
Instruments and Experimental Techniques. 45:78-86
The design of a detector based on a liquid-helium-cooled n-InSb crystal is described, and its performance characteristics are presented. The detector reception band is tunable between 80 and 250 μm (3.75–1.2 THz). The circuit diagrams of its elect