“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 13580
School of Particles and Accelerator
  Title:   Production and properties of two-color radiation generated by using a Free-Electron Laser with two orthogonal undulators
1.  Najmeh Sadat Mirian
2.  G Dattoli
3.  E DiPalma
4.  Vittoria Petrillo
  Status:   Published
  Journal: Nucl. Instr. and Meth. in Phys. Res. A
  Vol.:  767
  Year:  2014
  Pages:   227-234
  Supported by:  IPM
We present the analysis of the two-color Self Amplied Spontaneous Emission generated by a Free-Electron Laser amplier constituted by two orthogonally polarized undulators with dierent periods and eld intensi-ties. Equations deduced in a non averaged and in an averaged model have been integrated and compared. The two pulses have dierent frequencies, ruled by proper resonance conditions, and dierent polarizations, while the total length of the device does not change noticeably with respect to usual single color FELs. The wavelengths of two colors can be changed by choosing dierent periods, while variation in the magnetic strengths can be used to modify the gain lengths in view of various applications.

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