Orotron with Double-Row Periodic Structure for the Frequency Range 140-300 GHz

摘要

The orotron with the double-row periodic structure (DRPS) with a period of 0.2 mm on the plane mirror of an open cavity is studied using various types of focusing mirrors with one and two electron flows in the frequency range 140-300 GHz. Experimental results prove a hypothesis on an increase in the efficiency of the electron—wave interaction (output power) owing to the application of the second electron flow in the interaction space due to the quarter-wavelength resonance in the DRPS slits. The effect is observed in the entire frequency range and is especially important for an increase in the power at the high-frequency boundary.