“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 13341
School of Particles and Accelerator
  Title:   Two-color free-electron laser with two orthogonal undulators
  Author(s): 
1.  G Dattoli
2.  Najmeh Sadat Mirian
3.  V Petrillo
4.  E DiPalma
  Status:   Published
  Journal: Phys. Rev. Accel. Beams
  No.:  050702
  Vol.:  17
  Year:  2014
  Supported by:  IPM
  Abstract:
We discuss a two-color Self Amplified Spontaneous Emission (SASE) Free-Electron Laser (FEL) amplifier where the emission is obtained from two orthogonally polarized undulators with different periods and field intensities. Non averaged 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 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.


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