title: High-power terahertz-range planar gyrotrons with transverse energy extraction.
abstract: To increase the output power of terahertz gyrotrons to several hundred kilowatts, we suggest using a planar geometry of interaction space with a sheet electron beam and transverse energy extraction. An advantage of this scheme in comparison with conventional cylindrical geometry is the possibility to ensure effective mode selection over the open transverse coordinate in combination with radiation outcoupling that leads to a substantial reduction of Ohmic losses. Similar to unstable resonators in optics for further growth of the radiation power it is beneficial to introduce waveguide tapering.
authors.affiliation: Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950 Russia.
authors.forename: N S
authors.initials: NS
authors.lastname: Ginzburg
authors.forename: I V
authors.initials: IV
authors.lastname: Zotova
authors.forename: A S
authors.initials: AS
authors.lastname: Sergeev
authors.forename: V Yu
authors.initials: VY
authors.lastname: Zaslavsky
authors.forename: I V
authors.initials: IV
authors.lastname: Zheleznov