Observation of coherent and self-amplified spontaneous emission in the mid-infrared at the CLIO free-electron laser

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.54419· OSTI ID:21175546

Ortega, J M; Prazeres, R; Glotin, F ^[1]; Jaroszynski, D A ^[2]

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1. LURE, bat. 209d, Universite de Paris-Sud, 91405 Orsay cedex (France)
2. University of Strathclyde, Dept. of Physics, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG (United Kingdom)

We have produced and analysed the 'Coherent Spontaneous Emission' (CSE) and the 'Self-Amplified Spontaneous Emission' (SASE) emitted by a relativistic electron beam passing through an undulator, for the first time in the mid-infrared. In this spectral range, the two phenomena are both very noisy and can be distinguished only by detailed spectral measurements. The spectral behaviour of the SASE line is different from CSE and exhibits an unexpected growth at the start-up of the process.

• OSTI ID: 21175546
• Journal Information: AIP Conference Proceedings, Vol. 413, Issue 1; Conference: Workshop on single pass, high gain FELs starting from noise, aiming at coherent x-rays, Garda Lake (Italy), 2-7 Jun 1997; Other Information: DOI: 10.1063/1.54419; (c) 1997 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
COHERENT RADIATION
ELECTRON BEAMS
FREE ELECTRON LASERS
INTERMEDIATE INFRARED RADIATION
PHOTON EMISSION
RELATIVISTIC RANGE
WIGGLER MAGNETS