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Observation of harmonic lasing in the Angstrom regime at European X-ray Free Electron Laser
- Source :
- Physical Review Accelerators and Beams, Vol 24, Iss 3, p 030701 (2021), Physical review accelerators and beams 24(3), 030701 (2021). doi:10.1103/PhysRevAccelBeams.24.030701
- Publication Year :
- 2021
- Publisher :
- American Physical Society, 2021.
-
Abstract
- Harmonic lasing provides an opportunity to extend the photon energy range of existing and planned x-ray free electron laser (FEL) user facilities. Contrary to nonlinear harmonic generation, harmonic lasing can generate a much more intense, stable, and narrow-band FEL beam. Another interesting application is harmonic lasing self-seeding that allows to improve the longitudinal coherence and spectral power of a self-amplified spontaneous emission FEL. This concept was tested at the soft x-ray FEL user facility FLASH in the range of 4.5–15 nm and at Pohang accelerator laboratory X-ray Free Electron Laser (XFEL) at 1 nm. In this paper we present recent results from the European XFEL where we successfully demonstrated harmonic lasing at 5.9 Angstrom and 2.8 Angstrom. In the latter case we obtained both third and fifth harmonic lasing and, for the first time, operated a harmonic lasing cascade (fifth-third-first harmonics of the undulator). These results pave the way for reaching very high photon energies, up to 100 keV.
- Subjects :
- Physics
Nuclear and High Energy Physics
Photon
Synchrotron Radiation and Free-Electron Lasers
Physics and Astronomy (miscellaneous)
010308 nuclear & particles physics
business.industry
Physics::Optics
Surfaces and Interfaces
Undulator
Photon energy
01 natural sciences
Optics
Harmonics
0103 physical sciences
Harmonic
High harmonic generation
Physics::Accelerator Physics
lcsh:QC770-798
ddc:530
Spontaneous emission
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
010306 general physics
business
Lasing threshold
Subjects
Details
- Language :
- English
- ISSN :
- 24699888
- Volume :
- 24
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Physical Review Accelerators and Beams
- Accession number :
- edsair.doi.dedup.....65435b71c18f3cf8699cb18f65ba25ad