An ultra-broadband high-power terahertz radiation source

Abstract

The invention discloses an ultra-broadband high-power terahertz radiation source, which includes a cathode, a slow wave structure, an energy output coupler and a terminal matcher, wherein the energy output coupler is a three-port element, and the band-shaped electrons generated by the cathode Note, enter the energy output coupler from the strip-shaped electron injection port, and then output to the slow-wave structure from the connection port of the slow-wave structure to generate a terahertz radiation source signal. After being reflected by the terminal matcher, it passes through the slow-wave structure and returns to the energy The output coupler, finally, outputs the signal through the output port of the terahertz radiation source. The invention has ultra-wide tuning work and high power of watt level; the start-up condition is easy to be satisfied, and the requirement for the current density of the electron beam is relatively low; the output terahertz radiation source signal is stable and the spectrum is pure; the working voltage is low and miniaturized , Easy to process and assemble.

Description

technical field [0001] The invention belongs to the technical field of vacuum electronics, and more specifically relates to an ultra-broadband high-power terahertz radiation source. This invention is based on the applicant's application for an invention patent with the application number 201510965016.0 and the title "An ultra-wideband quasi-open slow wave structure" filed on December 21, 2015. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1-10THz (wavelength 0.03-3mm). Since this wave band has the characteristics of both millimeter waves and infrared light, it combines the advantages of millimeter waves and infrared light. Terahertz technology has broad application prospects in high-speed data transmission, high-precision imaging radar, chemical or biological map analysis, biomedical diagnosis, and material analysis. The generation of terahertz waves is the basis for the application of terahertz technology. ...

AI Technical Summary

Problems solved by technology

[0005] The power level of the extended interaction device is relatively high, but the bandwidth is narrow (generally only 100-200MHz), which is suitable for systems with low frequency range requirements

[0006] Although the gyrotron device can increase the output power to a very high level (generally kW-MW), it is bulky and the supporting system is complicated, so it is more suitable for the complete machine system with extremely high power requirements.

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