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Resonant cavity and terahertz extended interaction oscillator of cross structure

A technology of expanding interaction and resonant cavity, which is applied to the circuit components of time-of-flight electron tubes and electron tubes with velocity/density modulated electron flow, etc. It can solve problems such as poor realizability and limited power capacity of EIO devices in the terahertz frequency band. , to achieve the effect of improving feasibility, increasing beam-wave interaction efficiency, and increasing output power

Active Publication Date: 2019-03-29
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

[0005] In order to solve the problem of limited power capacity and poor realizability of EIO devices in the terahertz frequency band, this invention proposes a terahertz extended interaction oscillator with a cross structure. By designing a cross structure, the beam wave can be carried out in the entire circumferential direction of the electron beam The interaction process fully improves the beam-wave interaction efficiency

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  • Resonant cavity and terahertz extended interaction oscillator of cross structure
  • Resonant cavity and terahertz extended interaction oscillator of cross structure
  • Resonant cavity and terahertz extended interaction oscillator of cross structure

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] from figure 1 It can be seen that the cross-type extended interaction oscillator in this embodiment is mainly composed of an electron beam channel 1 , 16 identical gap units 2 and an output waveguide 3 . The output waveguide 3 is coupled with one of the gap units 2, and the electron beam channel 1 passes through the center of the gap unit 2, so that the electron beam interacts with the gap electric field to output the waveguide 3. The DC electron beam enters the electron beam channel 1, and interacts with the electric field at each gap unit 2, transfers the energy to the electromagnetic wave, and finally radiates the generated terahertz wave through the output waveguide 3. Here, the electron gun adopts an ideal electron injection, the working voltage is 14kV, the working current is 0.1A, and the guiding magnetic field adopts a uniform magnetic ...

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Abstract

The invention provides a resonant cavity and a terahertz extended interaction oscillator of a cross structure. The terahertz extended interaction oscillator of the cross structure is greatly differentfrom a traditional terahertz extended interaction oscillator. In a conventional device, a longitudinal electric field is distributed in one direction (such as an x-direction or a y-direction) in a concentrated manner; while a longitudinal electric field is distributed in two directions (i.e., the x-direction and the y-direction) at the same time in the device of the cross structure. Therefore, inthe structure, the energy exchange efficiency of the longitudinal electric field and the cylindrical electron beam can be effectively enhanced, and the output power can be effectively improved. The device can work under the working conditions of 14kV and 0.1 by optimally designing the cross extended interaction oscillator working at 0.3 THz, and the power output of about 51.5 W can be realized. The cross structure is suitable for improving the output power of the terahertz extended interaction oscillator, and is particularly suitable for improving the engineering realizability and the workingstability of a device under lower working current.

Description

technical field [0001] The invention belongs to the design scheme of a high-performance terahertz source, and in particular relates to an 12 Hz) to extend the output power and feasibility of interacting oscillators to high-frequency structures. Background technique [0002] Terahertz (THz) wave refers to the frequency from 0.3THz to 3THz (1THz=10 12 Hz), electromagnetic waves between millimeter waves and infrared light, this is the last frequency band that humans have not yet fully recognized and utilized. Terahertz waves are located in the transition region from macroscopic classical theory to microscopic quantum theory. Due to their special location, their radiation has unique advantages such as strong permeability, high resolution, non-ionization propagation, and rich spectral characteristics. These characteristics of terahertz wave make it have great application potential in information communication, medical diagnosis, biotechnology, material science, astronomy, milit...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/18H01J25/02
CPCH01J23/18H01J25/02
Inventor 李爽滕雁王东阳
Owner NORTHWEST INST OF NUCLEAR TECH
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