On the theory of parametric free-electron lasers based on opened resonators

doi:10.1016/0168-9002(89)90020-X

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume 282, Issues 2–3, 10 October 1989, Pages 439-441

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Abstract

The theory of free-electron lasers (FELs) based on opened resonators and modulated electron beams is developed.

References (10)

H. Motz et al.
Ann. Phys. (Leipzig)
(1959)
V.L. Ginsburg
Izv. Akad. Nauk SSSR, Ser. Fiz.
(1947)
H. Motz et al.
Appl. Phys.
(1953)
H. Motz
Trans. IRE AP-4
(1956)
D.F. Alferov et al.
Sov. Phys. Tech. Phys.
(1978)
D.F. Alferov et al.
Sov. Phys. Tech. Phys.
(1978)
D.F. Alferov et al.
FIAN N163
(1976)

There are more references available in the full text version of this article.

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A prebunched FEL using coherent transition radiation in the millimeter wave region
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Using a short-bunched beam of electrons of a linear accelerator, the electromagnetic impulses of coherent transition radiation (CTR) are superposed on the subsequent impulses coherently. The output of a closed resonator is compared with spontaneous CTR to verify amplification of radiation. The main cavity mode is assigned to be TM₀₂ from observation of the radial distribution of the intensity. Experiment on the influence of the size of the resonator shows that the output intensity increases with the volume of the resonator.
Coherent radiation from bunched electrons and prebunched FEL in the millimeter wavelength region
2002, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Synchrotron radiation (SR) emitted from a short-bunch beam of electrons of a linear accelerator is coherent in the millimeter wavelength region. When the wave packets of coherent SR are superposed on the subsequent bunches in an open resonator, the output has intense and quasi-continuous spectrum. The amplification of the radiation due to superposition of the radiation field is confirmed by experiment. The output spectrum is discussed on the basis of the phase of the resonant mode.
A prebunched FEL based on coherent transition radiation in the far-infrared region
2002, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
A short-bunch beam of electrons of $150 MeV$ is led to an open resonator of semi-confocal type. The wavepackets of coherent transition radiation (TR), emitted from bunched electrons passing through mirrors of the resonator, go back and forth in the resonator and superpose on the subsequent bunches to stimulate coherent TR. The main mode is assigned as TEM₀₁, and the intensity depends on the square of the beam current. The output intensity of the resonator is compared with the coherent spontaneous TR generated within the resonator to show amplification of radiation due to the stimulated emission.
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On the theory of parametric free-electron lasers based on opened resonators

Abstract

Ann. Phys. (Leipzig)

Izv. Akad. Nauk SSSR, Ser. Fiz.

Appl. Phys.

Trans. IRE AP-4

Sov. Phys. Tech. Phys.

Sov. Phys. Tech. Phys.

FIAN N163