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Phase-Imposing Initiation of Cherenkov Superradiance Emission by an Ultrashort-Seed Microwave Pulse

G. A. Mesyats, N. S. Ginzburg, A. A. Golovanov, G. G. Denisov, I. V. Romanchenko, V. V. Rostov, K. A. Sharypov, V. G. Shpak, S. A. Shunailov, M. R. Ulmaskulov, M. I. Yalandin, and I. V. Zotova
Phys. Rev. Lett. 118, 264801 – Published 30 June 2017

Abstract

For the first time, we demonstrate experimentally the possibility of Cherenkov superradiant generation with a phase imposed by an ultrashort seed microwave pulse. The phases of seed and initiated Ka-band microwave pulses were correlated with the accuracy of 0.5–0.7 rad for the power ratio down to 35dB. Characteristics of such a process were determined in the frame of a basic theoretical model that describes both spontaneous and stimulated emission of an electron beam moving in corrugated waveguides. The obtained results open up opportunities of reaching extremely high radiation power density in phased arrays of short-pulse coherently operating microwave generators.

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  • Received 11 April 2017

DOI:https://doi.org/10.1103/PhysRevLett.118.264801

© 2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Accelerators & BeamsPlasma PhysicsGeneral PhysicsNonlinear Dynamics

Authors & Affiliations

G. A. Mesyats1, N. S. Ginzburg2, A. A. Golovanov2, G. G. Denisov2, I. V. Romanchenko3, V. V. Rostov3, K. A. Sharypov4, V. G. Shpak4, S. A. Shunailov4, M. R. Ulmaskulov4, M. I. Yalandin1,4,*, and I. V. Zotova2

  • 1P. N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia
  • 2Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia
  • 3Institute of High-Current Electronics, Siberian Branch of the Russian Academy of Sciences, 634055 Tomsk, Russia
  • 4Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, 620016 Ekaterinburg, Russia

  • *yalandin@iep.uran.ru

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Issue

Vol. 118, Iss. 26 — 30 June 2017

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