Frequency-Stabilized Terahertz Gyrotron Backward-Wave Oscillator During Electronic Tuning Process

This paper proposes an electronic-tuning frequency stabilization scheme with power tuning for a Watt-level terahertz gyrotron oscillator in gyro-BWO state. The intrinsic positive relationship between electron-beam pitch factor a and accelerating voltage V in electron gun contributes to Doppler shift...

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Bibliographic Details
Main Authors: Pan, Shi, Du, Chao-Hai, Gao, Zi-Chao, Bao, Lu-Yao, Zhu, Juan-Feng, Paoloni, Claudio, Liu, Pu-Kun
Format: Conference Proceeding
Language:English
Subjects:
Cyclotrons
Doppler shift
Gyrotrons
Oscillators
Power generation
Tuning
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Summary:This paper proposes an electronic-tuning frequency stabilization scheme with power tuning for a Watt-level terahertz gyrotron oscillator in gyro-BWO state. The intrinsic positive relationship between electron-beam pitch factor a and accelerating voltage V in electron gun contributes to Doppler shift compensation during electronic tuning. When the pitch factor a varies from 1.1 to 1.9, the prototype three-sectioned gyrotron oscillator can be fixed at 253.98 GHz with 10 MHz level error. The output power is tuned by 40% from maximum. This approach is of importance for heat-effect-oriented applications in biomedicines and material processing.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz.2018.8510041