Abstract
It is shown that the application of a resonator composed of one-dimensional and two-dimensional coaxial Bragg mirrors provides a spatially coherent radiation from a hollow electron beam with a transverse size several orders of magnitude larger than the wavelength. The two-dimensional Bragg mirror placed at the cathodic end of the resonator synchronizes the radiation across the hollow electron beam. The standard one-dimensional Bragg mirror placed at the collector end closes the feedback loop and reduces ohmic losses to as low as 5–10% of the lasing power.
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Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 8, 2001, pp. 80–84.
Original Russian Text Copyright © 2001 by Ginzburg, Peskov, Sergeev.
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Ginzburg, N.S., Peskov, N.Y. & Sergeev, A.S. Spatially coherent radiation from a coaxial free-electron laser with a resonator composed of one-dimensional and two-dimensional Bragg mirrors. Tech. Phys. 46, 1009–1013 (2001). https://doi.org/10.1134/1.1395122
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DOI: https://doi.org/10.1134/1.1395122