A compact Cherenkov laser with a Bragg cavity composed of dielectric gratings

Author

Shiozawa, Toshiyuki ; Kamata, Hisashi

Author_Institution

Inst. of Laser Eng., Osaka Univ., Japan

Volume

33

Issue

10

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

1687

Lastpage

1693

Abstract

The growth and saturation characteristics of a Cherenkov laser with a Bragg cavity composed of dielectric gratings are investigated in detail with the aid of numerical simulation based upon the fluid model of the electron beam, For the analysis of the problem, a two-dimensional (2-D) model of the Cherenkov laser is considered which consists of a planar relativistic electron beam and a parallel plate waveguide, one plate of which is loaded with a dielectric sheet. For confinement and extraction of the electromagnetic wave, a Bragg cavity is formed by dielectric gratings fabricated at both ends of a dielectric-loaded parallel plate waveguide. The result of numerical simulation shows that a compact Cherenkov laser, the longitudinal dimension of which is about one order of magnitude smaller than that of the corresponding single-pass Cherenkov laser, can be realized by using a Bragg cavity composed of dielectric gratings

Keywords

Cherenkov radiation; dielectric-loaded waveguides; diffraction gratings; dispersion (wave); free electron lasers; laser cavity resonators; laser theory; millimetre wave lasers; numerical analysis; optical saturation; relativistic electron beam tubes; submillimetre wave lasers; waveguide lasers; Bragg cavity; compact Cherenkov laser; confinement; dielectric gratings; dielectric sheet; dielectric-loaded parallel plate waveguide; electromagnetic wave; electron beam; extraction; fluid model; growth characteristics; longitudinal dimension; numerical simulation; parallel plate waveguide; planar relativistic electron beam; saturation characteristics; short millimeter waves; single-pass Cherenkov laser; submillimeter waves; two-dimensional model; Bragg gratings; Dielectrics; Electromagnetic scattering; Electromagnetic waveguides; Electron beams; Laser modes; Numerical simulation; Planar waveguides; Two dimensional displays; Waveguide lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.631265

Filename

631265