Two-stage serial-connection terahertz slow wave structure

Abstract

The invention discloses a two-stage serial-connection terahertz slow wave structure which comprises two stages of slow wave structure bodies. The two stages of the slow wave structure bodies are different in period and tooth space width and are equal in length, depth, channel width and electronic beam channel height. The period and the tooth space width of the first stage of slow structure body are smaller than that of the second stage of slow wave structure body, transition gradient structures are arranged at the electronic beam input ends and the electronic beam output ends of the two stages of slow wave structure bodies, the electronic beam input ends of the two stages of the slow wave structure are in serial connection, and two rectangular holes are formed in the connection position between the two stages of the slow wave structures to be used for banding electrons to enter the slow wave structure bodies. The two-stage serial-connection terahertz slow wave structure is simple in main body structure, easy to process, low in high-frequency loss, good in frequency stability and completely suitable for terahertz wave bands and uses banding electrons to work. By means of the two electronic beams, homogeneous tube work current is improved under the same cathode emission density, and power output is improved. Under the same homogenous tube work current, the current density of the banding beams is reduced, and the electronic efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of vacuum electronics, in particular to a two-stage series-connected terahertz slow-wave structure. Background technique [0002] Terahertz (THz) waves refer to electromagnetic waves with a frequency in the range of 0.1 to 10 THz. Due to the unique properties of THz waves and their potential applications in object imaging, environmental monitoring, medical diagnosis, radio astronomy, satellite communications, military radar, and national defense security Due to its great scientific value and broad application prospects, it has received more and more attention. [0003] The main device types of existing THz sources, according to the mechanism of THz radiation, can be divided into two types of radiation sources: one is the method of using electronics, and the other is the method of using optics. However, most existing devices are either complex, bulky, inefficient, or difficult to operate at room temperat...

AI Technical Summary

Problems solved by technology

However, most existing devices are either complex, bulky, inefficient, or difficult to operate at room temperature

The lack of miniaturized, high-power (1-1000mW) coherent radiation sources and amplifier devices makes the development and application of terahertz technology still very limited. Among them, the problem of high-power radiation sources of 0.1-1THz is more prominent. Power devices in this frequency band and Relatively little applied research

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