Bragg resonator for selective feedback in overmoded oscillators

Author

Chong, Chae K. ; Razeghi, M.M. ; McDermott, D.B. ; Luhmann, N.C.

fYear

1990

fDate

21-23 May 1990

Firstpage

195

Abstract

Summary form only given. Two Bragg resonators have been built for use in a 10-GHz CARM (cyclotron autoresonance maser)/gyro-TWT (traveling wave tube), one with sinusoidal corrugations and the other with rectangular corrugations. A Bragg reflection cavity is formed by separating two corrugated sections by a smooth section. The external quality factor for the cavity is given by Q_ext= kL/(1-R₁R₂), where R₁ and R₂ represent the reflection coefficients of the two corrugated sections, L is the length of the smooth section, and k=ω/c. The number of cavity modes within the reflector´s bandwidth is 2GL/π, where G is the coupling coefficient. The reflectivity of a single section and modes in the composite cavity for both the sinusoidal and rectangular corrugation reflectors were measured

Keywords

gyrotrons; laser cavity resonators; masers; 10 GHz; Bragg reflection cavity; Bragg resonator; CARM; bandwidth; composite cavity; coupling coefficient; cyclotron autoresonance maser; external quality factor; gyro-travelling wave tube; overmoded oscillators; rectangular corrugations; selective feedback; sinusoidal corrugations; smooth section;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science, 1990. IEEE Conference Record - Abstracts., 1990 IEEE International Conference on

Conference_Location

Oakland, CA, USA

Type

conf

DOI

10.1109/PLASMA.1990.110807

Filename

5726077