Bragg resonator for selective feedback in overmoded oscillators | Zendy

C.K. Chong | Zendy; M.M. Razeghi | Zendy; D.B. McDermott | Zendy; N.C., Jr. Luhmann | Zendy

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Bragg resonator for selective feedback in overmoded oscillators

Author(s) -

C.K. Chong,

M.M. Razeghi,

D.B. McDermott,

N.C., Jr. Luhmann

Publication year - 2012

Publication title -

1990 plasma science ieee conference record - abstracts

Language(s) - English

Resource type - Conference proceedings

DOI - 10.1109/plasma.1990.110807

Subject(s) - engineered materials, dielectrics and plasmas

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- R 1 R 2 ), where R 1 and R 2 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 2 GL /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

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