First Lasing of Volume FEL (VFEL) at Wavelength Range $\lambda \sim $ 4-6 mm
Abstract
First lasing of volume free electron laser (VFEL) is described. The generating system consists of two metal diffraction grating with different spatial periods. The first grating creates the conditions for Smith Purcell emission mechanism. The second grating provides the distributed feedback for emitted wave. The length of diffraction grating is 10 cm. Electron beam pulse with a time duration 10 ms has a sinusoidal form with the amplitude varied from 1 to ~10 kV. The measured microwave power reached the value of about 3-4 W in mm wavelength range. The generation stops at threshold current value. When the current tends to the threshold value, the region of generation tends to a narrow band near to 5 kV. At higher current values the radiation appears in electron energy range 5 - 7.5 KeV.
Cite
@article{arxiv.physics/0107043,
title = {First Lasing of Volume FEL (VFEL) at Wavelength Range $\lambda \sim $ 4-6 mm},
author = {V. Baryshevsky and K. Batrakov and A. Gurinovich and I. Ilienko and A. Lobko and V. Moroz and P. Sofronov and V. Stolyarsky},
journal= {arXiv preprint arXiv:physics/0107043},
year = {2007}
}
Comments
7 pages, LaTeX, 4 eps figures