Broadband and High-Power Sub-terahertz Gyro-TWTs and Ultrashort Electromagnetic Pulse Generation
摘要
In this paper, a short demonstration about the recent progress of our high-power broadband gyrotron travelling wave tube (gyro-TWT) amplifiers in the sub-terahertz band (W and G-band) are respectively reported. Hot test of the W- and G-band gyro-TWTs had respectively achieved a pulsed/averaged output power of over 120 kW/20 kW and 35 kW/2.1 kW within a 10 GHz bandwidth. Based on the fabricated sub-terahertz gyro-TWTs, a scheme to generate high power, ultrashort electromagnetic pulses based on the chirped signal compressor is also presented, which had been verified in the micro- and millimeter wave band. The presented sub-terahertz high-power sources and ultrashort pulses have potential applications in the high-resolution imaging radar, deep space communication, bio-medicine, material modification and catalysis, etc.