Enhanced Self-Seeding with Ultrashort Electron Beams
Abstract
In this paper, 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 ultrashort 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 self-amplified spontaneous emission 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.
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1656584
- Grant/Contract Number:
- 2017-SLAC-100382; AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 125; Journal Issue: 4; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS
Citation Formats
Hemsing, Erik, Halavanau, Aliaksei, and Zhang, Zhen. Enhanced Self-Seeding with Ultrashort Electron Beams. United States: N. p., 2020.
Web. doi:10.1103/physrevlett.125.044801.
Hemsing, Erik, Halavanau, Aliaksei, & Zhang, Zhen. Enhanced Self-Seeding with Ultrashort Electron Beams. United States. https://doi.org/10.1103/physrevlett.125.044801
Hemsing, Erik, Halavanau, Aliaksei, and Zhang, Zhen. Wed .
"Enhanced Self-Seeding with Ultrashort Electron Beams". United States. https://doi.org/10.1103/physrevlett.125.044801. https://www.osti.gov/servlets/purl/1656584.
@article{osti_1656584,
title = {Enhanced Self-Seeding with Ultrashort Electron Beams},
author = {Hemsing, Erik and Halavanau, Aliaksei and Zhang, Zhen},
abstractNote = {In this paper, 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 ultrashort 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 self-amplified spontaneous emission 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.},
doi = {10.1103/physrevlett.125.044801},
journal = {Physical Review Letters},
number = 4,
volume = 125,
place = {United States},
year = {Wed Jul 22 00:00:00 EDT 2020},
month = {Wed Jul 22 00:00:00 EDT 2020}
}
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Works referencing / citing this record:
Coherent x rays with tunable time-dependent polarization
journal, December 2020
- Sudar, N.; Coffee, R.; Hemsing, E.
- Physical Review Accelerators and Beams, Vol. 23, Issue 12