Large-orbit gyrotron operation in the terahertz frequency range.
Coherent terahertz high-harmonic radiation has been obtained in a gyrotron with an axis-encircling electron beam. An electron-optical system with a cusp gun and a following drift section of adiabatic magnetic compression with an area factor of 3000 provides the formation of an 80-keV/0.7-A beam of gyrating electrons in a wide range of voltages and magnetic fields. Stable single-mode generation with a power of 0.3-1.8 kW in microsecond pulses is detected at four frequencies in the range 0.55-1.00 THz at resonant magnetic fields 10.5-14 T.
Bratman
V L
VL
Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia. bratman@appl.sci-nnov.ru
Kalynov
Yu K
YK
Manuilov
V N
VN