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X-Ray Free-Electron Lasers: Advances in Source Development and Instrumentation V
We present a new and simple method to generate two-color free-electron laser (FEL) pulses. In our scheme an electron bunch is quadratically tilted in the transverse direction and exhibits an energy chirp. The head and tail of the bunch are aligned to the undulator beamline and will lase, while the middle part of the bunch undergoes orbit oscillations and thus is unable to amplify the FEL radiation. Since the beam is energy chirped, the central wavelengths of the SASE amplification at the twodoi:10.1117/12.2524104 fatcat:olib33uelzanxipcpqxga777si