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17 November 2020 Mechanisms of stabilization and terahertz radiation of short dense electron bunches
I. V. Bandurkin, V. L. Bratman, Yu. S. Oparina, A. V. Savilov, Yu. Lurie
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Proceedings Volume 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications; 115820Y (2020) https://doi.org/10.1117/12.2580507
Event: Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 2020, Tomsk, Russian Federation
Abstract
Powerful coherent terahertz radiation from short photo-injector electron bunches is required for many applications including mastering terahertz and x-ray frequency ranges. If the effective length of the electron bunch is shorter than the wavelength of the radiated wave, then the coherent spontaneous emission process does not need a special electron bunching and starts immediately. However, the initial coherence of radiation is rapidly broken due to increase in the bunch phase size, in particular, because of the strong Coulomb repulsion of particles inside a dense bunch. Stabilization of the bunch lengths or even compression of dense electron bunches in terahertz electron sources may be provided by various methods described briefly in this work.
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I. V. Bandurkin, V. L. Bratman, Yu. S. Oparina, A. V. Savilov, and Yu. Lurie "Mechanisms of stabilization and terahertz radiation of short dense electron bunches", Proc. SPIE 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 115820Y (17 November 2020); https://doi.org/10.1117/12.2580507
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KEYWORDS
Terahertz radiation
Magnetism
Free electron lasers
Picosecond phenomena
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