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Mechanism of free electron maser self-excitation using coupled propagating and trapped modes

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Abstract

A new scheme of feedback in a free-electron maser (FEM), which is based on the mutual scattering of propagating and quasi-cutoff (trapped) modes on a periodic Bragg structure, is considered. The trapped mode makes possible self-excitation of the system, while the energy exchange in a stationary generation regime is almost entirely determined by the interaction with a synchronous propagating wave. Using the proposed method, it is possible to improve mode selectivity with respect to the transverse index and accordingly decrease the working wavelength.

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Authors and Affiliations

  1. Institute of Applied Physics, Russian Academy of Sciences, Nizhni Novgorod, 603950, Russia

    N. S. Ginzburg, A. M. Malkin, N. Yu. Peskov & A. S. Sergeev

Authors
  1. N. S. Ginzburg
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  2. A. M. Malkin
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  3. N. Yu. Peskov
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  4. A. S. Sergeev
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Additional information

Original Russian Text © N.S. Ginzburg, A.M. Malkin, N.Yu. Peskov, A.S. Sergeev, 2006, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2006, Vol. 32, No. 20, pp. 60–69.

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Ginzburg, N.S., Malkin, A.M., Peskov, N.Y. et al. Mechanism of free electron maser self-excitation using coupled propagating and trapped modes. Tech. Phys. Lett. 32, 896–900 (2006). https://doi.org/10.1134/S1063785006100245

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  • DOI: https://doi.org/10.1134/S1063785006100245

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