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An analysis of the free-electron laser small-signal gain in a resonator gaussian mode

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Abstract

A simplified analysis of the small-signal gain in the presence of a Gaussian mode is presented for several undulator designs. For a filamentary electron beam, an analytical expression of the gain is obtained and found to be in agreement with previous work and with computer simulations. A general expression of the small-signal gain for the optical klystron FEL is given.

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  1. Hefei National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, PR China

    Jia Qi-ka

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  1. Jia Qi-ka
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Qi-ka, J. An analysis of the free-electron laser small-signal gain in a resonator gaussian mode. Appl. Phys. B 49, 541–544 (1989). https://doi.org/10.1007/BF00324954

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  • DOI: https://doi.org/10.1007/BF00324954

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