Enhanced Self-seeding with Ultra-short Electron Beams

Abstract

We describe a new method to produce intensity stable, highly coherent, narrow-band x-ray pulses in self-seeded free electron (FEL) lasers. The approach uses an ultra-short electron beam to generate a single spike FEL pulse with a wide coherent bandwidth. The self-seeding monochromator then notches out a narrow spectral region of this pulse to be amplified by a long portion of electron beam to full saturation. In contrast to typical self-seeding where monochromatization of noisy SASE pulses leads to either large intensity fluctuations or multiple frequencies, we show that this method produces a stable, coherent FEL output pulse with statistical properties similar to a fully coherent optical laser.

5 pages, 6 figures

References in corpus (4)

• Tunable Isolated Attosecond X-ray Pulses with Gigawatt Peak Power from a Free-Electron Laser
• Seeded x-ray free-electron laser generating radiation with laser statistical properties
• High Efficiency, Multi-Terawatt X-ray free electron lasers
• Phase-stable self-modulation of an electron-beam in a magnetic wiggler

Cited by in corpus (3)

• An Ultra-Compact X-Ray Free-Electron Laser
• Resonance-enhanced multiphoton ionization in the x-ray regime
• Coherent X-rays with Tunable Time-Dependent Polarization