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10th International Conference on Laser and Fiber-Optical Networks Modeling (LFNM2010). 2nd International Workshop on Thz Radiation: Basic Research and Applications (TERA 2010)
In this paper we investigated boundary conditions for the impedance circular cylinder covered by a low contrast dielectric thin layer. Expression for the resulted impedance of the cylinder is received. Conditions and boundaries to applicability of the used approach are defined. Effect to an impedance of a covering on the resulted impedance to the cylinder is investigated.
We propose fundamentally new technical and constructive solutions to the construction of the receiving and transmitting structures of the terahertz radiation based on apodized and chirped periodic lattices. It is shown that the efficiency can reach about 88% at the resonance frequency of 1.82 THz and simultaneous apodization and chirping of the structures when the number of periods of such a structure...
Terahertz anomalous dispersion and material physical properties leads to form the region with negative dielectric permittivity (DP) that is created around the polar frequency oscillations in three crystalline modifications of boron nitride will be analyzed in our report. Our analysis based on the simple quantitative criterion of existence the negative DP bands. Seven vibrations in different crystalline...
A new type of subterahertz generator at harmonics of BWO oscillations in the mode of diffraction radiation is proposed. The nonlinear multidimensional theory of the double-mode beam-wave interaction at the harmonics of the BWO is developed. The regions of problem parameters values, corresponding to diffraction radiation excitation are defined.
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