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Feurer, T.

Paper Title Page
TUPD31 Ytterbium Fiber Laser for Electro-Optical Pulse Length Measurements at the SwissFEL 366
 
  • F. Müller, S. Hunziker, V. Schlott, B. Steffen, D.M. Treyer
    PSI, Villigen
  • T. Feurer, F. Müller
    IAP Univ. Bern, Bern
 
 

Pulsed Yb fiber lasers emit at 1030 nm which provides a better phase matching in standard EO crystals (GaP, ZnTe) than Ti:Sa lasers (800nm). We present a mode locked ytterbium fiber laser which is phase locked to the RF. A subsequent fiber amplifier is used to boost the power and to broaden the spectrum due to nonlinear effects. The produced pulses have a spectral width of up to 100 nm and are therefore suitable for EO bunch length measurements, especially for spectral decoding. The laser delivers a chirped pulse of some ps, the fourier limited pulse duration of ~30 fs can be almost reached by an additional shaper setup with a spatial light modulator in the Fourier plane.