Medium power compact sources of electromagnetic radiation in millimeter and sub-millimeter ranges

Sources of electromagnetic radiation in THz range with high enough power and wide frequency range are necessary for an increasing number of applications in the technologies and many scientific researches including high data rate communications, remote high resolution imaging, chemical spectroscopy, materials research, deep space research and communications, biomedical diagnostics, radar and remote sensing system, diagnostics of plasma, concealed weapon or threat detection and etc.However, at present a lot of customers are unable to use the advantages of the THz wave applications because of the absence of compact, easy in service sources. Existing gyrotrons are powerful devices but they are huge, expensive and difficult in operation complexes. Another and main technical disadvantage of gyrotrons is narrow frequency range. At the same time both solid state devices and BWOs have low level of output power that is not enough for many applications.In this work the description of developed BWO-Clinotrons of millimeter and sub-millimeter ranges is presented. Experimental results on both formation and transportation of intense electron beam interacting with the space harmonics of slowing wave system show the possibility to increase the output power of THz clinotrons. Second part of this work is dedicated to development of low-voltage CRM which can be used in mentioned applications.