REVIEW AND PROSPECT OF RESEARCH ON THE ELECTRON CYCLOTRON MASER
电子迴旋脉塞研究的现状和展望

In recent years, a remarkable progress of the research work on the electron cyclotron maser (i.e. gyrotron), which provides an efficient source for generating high power radiation at millimeter and submillimeter wavelengths, has been made. The current state of the art on gyro-devices, including gyromonotron oscillators, gyrotron amplifiers. high-harmonic gyrotrons and gyrotrons with an intense relativistic electron beam are expounded. Some existing problems, measures of solving difficulties as well as the trends of research and development in gyrotron are recommended.