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Effect of the incoherent emission on the FEL pulse width

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Il Nuovo Cimento D

Summary

In this paper we discuss the effect of the incoherent spontaneous emission on the FEL pulse width. We analyse the dependence of the laser spatial width on the number of round trips, within the framework of the supermodes’ theory. We also study the distortion induced in the supermode spectrum by the incoherent emission.

Riassunto

Gli autori discutono l’effetto della emissione spontanea incoerente sull’ampiezza dell’impulso laser in un FEL nel corso dell’evoluzione del segnale. Le espressioni riportate sono derivate nel contesto della teoria dei supermodi precedentemente sviluppata relativamente al regime di basso guadagno e piccolo segnale e nell’ipotesi di pacchetto di elettroni lungo.

Резюме

В этой статье мы обсуждаем влияние некогерентного спонтанного нзлучения на ширину импульса в лазере на свободных электронах. Мы анализируем зависимость пространственной ширины импульса лазера от числа пролетов в рамках теории супер-мод. Мы также исследуем дисторсию, индуцированную в спектре супермод из-за некогерентного излучения.

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References

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Author notes

  1. H. Fang

    Present address: Shanghai Institute of Optics and Fine Mechanics, Academic Sinica, Shanghai, P.R.C.

Authors and Affiliations

  1. ENEA, Dip. TIB, U.S. Fisica Applicata, CRE Frascati, C.P. 65, 00044, Frascati (Roma), Italia

    G. Dattoli, T. Hermsen (ENEA Guest), A. Torre & H. Fang

Authors
  1. G. Dattoli
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  2. T. Hermsen
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  3. A. Torre
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  4. H. Fang
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Dattoli, G., Hermsen, T., Torre, A. et al. Effect of the incoherent emission on the FEL pulse width. Il Nuovo Cimento D 11, 509–516 (1989). https://doi.org/10.1007/BF02457507

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  • DOI: https://doi.org/10.1007/BF02457507

PACS 85.60

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