Powerful continuous-wave sub-terahertz electron maser operating at the 3rd cyclotron harmonic

Coherent subterahertz radiation is achieved in an electron cyclotron maser (large-orbit gyrotron configuration) operating at a higher cyclotron harmonic in the continuous-wave generation regime. This auto-oscillator is based on the use of a gun with a magnetic field cusp and a section for adiabatic...

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Bibliographic Details
Published in:Applied physics letters 2019-05, Vol.114 (21)
Main Authors: Kalynov, Yu. K., Manuilov, V. N., Fiks, A. Sh, Zavolskiy, N. A.
Format: Article
Language:English
Subjects:
Applied physics
Continuous radiation
Cyclotrons
Electron beams
Electrons
Magnetic compression
Magnetic fields
Plasma
Wave generation
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Summary:Coherent subterahertz radiation is achieved in an electron cyclotron maser (large-orbit gyrotron configuration) operating at a higher cyclotron harmonic in the continuous-wave generation regime. This auto-oscillator is based on the use of a gun with a magnetic field cusp and a section for adiabatic magnetic compression with a factor of 1000, forming a 30 keV/0.7 A axis-encircling electron beam in a magnetic field of 5 T. A stable single-mode generation is achieved in the case of operation at the third and second cyclotron harmonics at frequencies of 0.394 THz and 0.267 THz with radiation powers of 0.37 kW and 0.9 kW, respectively.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5094875