Two-color free-electron laser with two orthogonal undulators

We discuss a two-color self-amplified spontaneous emission free-electron laser (FEL) amplifier where the emission is obtained from two orthogonally polarized undulators with different periods and field intensities. Nonaveraged and averaged equations are compared. The two radiations have not only dif...

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Bibliographic Details
Published in:Physical review special topics. PRST-AB. Accelerators and beams 2014-05, Vol.17 (5), p.050702, Article 050702
Main Authors: Dattoli, G., Mirian, N. S., DiPalma, E., Petrillo, V.
Format: Article
Language:English
Subjects:
Color
Free electron lasers
Spontaneous emission
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Summary:We discuss a two-color self-amplified spontaneous emission free-electron laser (FEL) amplifier where the emission is obtained from two orthogonally polarized undulators with different periods and field intensities. Nonaveraged and averaged equations are compared. The two radiations have not only different frequencies, but also different polarizations, while the total length of the device does not change with respect to usual single-color FELs. The wavelengths of two different colors can be changed by choosing different periods, while variation in the magnetic strengths can be used to modify the gain lengths.
ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.17.050702