Synchronous mode locking in gyrotrons

Author

McCurdy, A.H.

Author_Institution

Dept. of Electr. Eng.-Electrophys., Univ. of Southern California, Los Angeles, CA, USA

fYear

1992

fDate

13-16 Dec. 1992

Firstpage

211

Lastpage

214

Abstract

A problem encountered in the development of high efficiency sources of coherent radiation in the microwave and millimeter wavelength regime is the competition between various modes for energy from the electron beam. Much research has focused on the suppression of unwanted modes. However little work has been done on utilizing the microwave oscillator in the overmoded state. The idea developed here is to allow the modes which are above the start oscillation threshold to grow in an unimpeded fashion and to modify the relative phases between modes to lock the modes together. Thus coherent output is obtained with a concomitant modulation in either the amplitude or frequency. Here we investigate the mode locking of axial TE/sub 11n/ modes in a closed cavity gyrotron oscillator and discuss the feasibility of mode locking in an open resonator gyrotron structure.<>

Keywords

cavity resonators; electron beams; gyrotrons; microwave oscillators; modulation; axial TE/sub 11n/ modes; closed cavity gyrotron oscillator; coherent output; electron beam; gyrotrons; microwave oscillator; modulation; open resonator gyrotron structure; overmoded state; synchronous mode locking; Cavity resonators; Electron beams; Gyrotrons; Microwave oscillators; Modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1992. IEDM '92. Technical Digest., International

Conference_Location

San Francisco, CA, USA

ISSN

0163-1918

Print_ISBN

0-7803-0817-4

Type

conf

DOI

10.1109/IEDM.1992.307344

Filename

307344