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Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation

Lumpkin, A. H.; Dejus, R.; Lewellen, J. W.; Berglund, Magnus LU ; Biedron, S.; Borland, M.; Chae, Y. C.; Erdmann, M.; Huang, Z. and Kim, K. J., et al. (2002) In Physical Review Letters 88(23). p.4-4
Abstract
We report the first measurements of z -dependent coherent optical transition radiation (COTR) due to electron-beam microbunching at high gains (>10(4) ) including saturation of a self-amplified spontaneous emission free-electron laser (FEL). In these experiments the fundamental wavelength was near 530 nm, and the COTR spectra exhibit the transition from simple spectra to complex spectra (5% spectral width) after saturation. The COTR intensity growth and angular distribution data are reported as well as the evidence for transverse spectral dependencies and an "effective" core of the beam being involved in microbunching.
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publication status
published
subject
keywords
FEL, GAIN, WIGGLER, DIAGNOSTICS, BEAM, AMPLIFIED SPONTANEOUS-EMISSION
in
Physical Review Letters
volume
88
issue
23
pages
4 - 4
publisher
American Physical Society
external identifiers
  • wos:000175860500030
  • scopus:0037054244
ISSN
1079-7114
DOI
10.1103/PhysRevLett.88.234801
language
English
LU publication?
yes
id
d8bafd56-8fcc-4355-a63a-7c6c16998b85 (old id 1417312)
date added to LUP
2009-06-12 11:38:27
date last changed
2017-01-01 05:11:08
@article{d8bafd56-8fcc-4355-a63a-7c6c16998b85,
  abstract     = {We report the first measurements of z -dependent coherent optical transition radiation (COTR) due to electron-beam microbunching at high gains (>10(4) ) including saturation of a self-amplified spontaneous emission free-electron laser (FEL). In these experiments the fundamental wavelength was near 530 nm, and the COTR spectra exhibit the transition from simple spectra to complex spectra (5% spectral width) after saturation. The COTR intensity growth and angular distribution data are reported as well as the evidence for transverse spectral dependencies and an "effective" core of the beam being involved in microbunching.},
  author       = {Lumpkin, A. H. and Dejus, R. and Lewellen, J. W. and Berglund, Magnus and Biedron, S. and Borland, M. and Chae, Y. C. and Erdmann, M. and Huang, Z. and Kim, K. J. and Li, Y. and Milton, S. V. and Moog, E. and Rule, D. W. and Sajaev, V. and Yang, B. X.},
  issn         = {1079-7114},
  keyword      = {FEL,GAIN,WIGGLER,DIAGNOSTICS,BEAM,AMPLIFIED SPONTANEOUS-EMISSION},
  language     = {eng},
  number       = {23},
  pages        = {4--4},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.88.234801},
  volume       = {88},
  year         = {2002},
}