Under the action of pump light, a conventional photonic crystal can be turned into a functional photonic crystal. In the paper, we have designed an optical triode with a one-dimensional functional photonic crystal, and analyzed the effect of period number, medium thickness, refractive index, incident angle, the irradiation frequency and the intensity of the pump light on the optical triode magnification. We obtain some valuable results, which shall help to optimize the design of optical triodes.
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http://dx.doi.org/10.1039/c5nr09081d | DOI Listing |
Rev Sci Instrum
January 2020
Budker Institute of Nuclear Physics, 11 Lavrentieva Prospect, Novosibirsk 630090, Russia.
An injector of fast deuterium atoms for plasma heating was designed and installed at the Tokamak à Configuration Variable (TCV). The neutral beam can deliver 1 MW power to the plasma in 2 s pulses. An ion beam of the injector is formed by a triode multislit ion-optical system with spherical electrodes which provide ballistic focusing.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2019
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China.
Carbon nanotube (CNT) cold cathodes are proving to be compelling candidates for miniaturized terahertz (THz) vacuum electronic devices (VEDs) owning to their superior field-emission (FE) characteristics. Here, we report on the development of a multi-sheet beam CNT cold cathode electron optical system with concurrently high beam current and high current density. The microscopic FE characteristics of the CNT film emitter is captured through the development of an empirically derived macroscopic simulation model which is used to provide representative emission performance.
View Article and Find Full Text PDFSensors (Basel)
October 2018
School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China.
Software-defined radio (SDR) is a good solution for complying with the existing and incoming protocols for emerging wireless sensor networks (WSN) and internet of things (IoT) applications. The frequency synthesizer in a SDR tranceiver usually consists of a phase locked loop (PLL) and a post synthesizer. The PLL is the narrow band signal source and the post synthesizer generates wideband outputs by mixing and dividing.
View Article and Find Full Text PDFRev Sci Instrum
February 2016
Institute of Energy and Climate Research-Plasma Physics, Research Center Juelich, 52425 Juelich, Germany.
Multi-slit triode ion-optical systems with spherical electrodes are of interest for formation of intense focused neutral beams for plasma heating. At present, two versions of focusing multi-slit triode ion optical system are developed. The first ion optical system forms the proton beam with 15 keV energy, 140 A current, and 30 ms duration.
View Article and Find Full Text PDFNanoscale
March 2016
Institute of Physics, Jilin Normal University, Siping 136000, China.
Under the action of pump light, a conventional photonic crystal can be turned into a functional photonic crystal. In the paper, we have designed an optical triode with a one-dimensional functional photonic crystal, and analyzed the effect of period number, medium thickness, refractive index, incident angle, the irradiation frequency and the intensity of the pump light on the optical triode magnification. We obtain some valuable results, which shall help to optimize the design of optical triodes.
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