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In this paper, a novel terahertz (THz) extended interaction oscillator (EIO) is presented. Adopting PIC code, design and optimization geometry of EIO is performed, which is composed of ladder loaded rectangular waveguide. In present work, the operation center frequency of THz EIO is 105GHz, and the output power 673W is achieved, the efficiency reaches 12.1%, which is beam voltage and beam current...
MILO has been analyzed for its beam wave interaction and the RF released energy has been calculated. The analytical results are obtained, typically, for a S-band MILO, and released RF energy is found as 2.5 Joule at 300 kV applied voltage. The analytical results has also been validated through PIC simulation code MAGIC and found to be in close agreement.
In this paper, a two-section folded waveguide of Terahertz (THz) extended interaction oscillator (EIO) is presented, which is studied by the help of particle-in-cell (PIC) simulation. The output power and operation frequency are studied.
Coherent and strong terahertz wave is generated from a synchrotron light source using laser bunch slicing. The electric field is detected with the electro-optic sampling method using a Ti:sapphire oscillator for probe and a 24-m long large mode-area photonic crystal fiber for delivering it.
A method for control of electric field distribution in the near-cathode region of a magnetron-injection gun has been developed. The possibility to improve quality of the helical electron beam by regulated non-uniformities of electric field is studied experimentally and using computer modeling.
The author proposes a monotron consisting of the parallel plates (cathode and anode) spaced by periodic dielectric-rods around the emitter (photonic crystal resonator), that is the diode and resonator all in one.
The possibility of self-oscillation of sheet beam transported through drift tube having high aspect ratio is considered. Limitations for aspect ratio of the drift tube are presented. An alternative design of multibeam tube is considered.
We describe a novel slow-wave structure formed by a periodic array of rectangular rings interconnected by diagonal conductors. The sheet beam topology has the potential to significantly increase the output power of traveling-wave amplifiers at millimeter-wave frequencies and the small circuit period enables operation at relatively low voltages, far from the conditions for backward-wave oscillation...
A design study of a 0.1-THz coupled-cavity backward-wave oscillator (CCBWO) is presented using a finite element method and a particle-in-cell simulation. In experiments, the Si-based technology of 2-step deep reactive ion etching (DRIE) and eutectic bonding shows a good potential for the microfabrication of the interaction circuit. A miniaturized field emission cathode using carbon nanotubes grown...
An excitation model for TM-mode cylindrical cavities driven by a modulated electron beam with application in transit-time microwave tubes is developed. It is shown that the slowly time varying amplitude of the self-sustained oscillations is described by a reduced form of the classical van der Pol equation, from which expressions for the starting current and saturation amplitude are readily derived.
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