- Open Access
Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide
Phys. Rev. ST Accel. Beams 12, 010701 – Published 29 January, 2009
DOI: https://doi.org/10.1103/PhysRevSTAB.12.010701
Abstract
A phenomenon of “spectral gaps” is observed in far-infrared free-electron lasers using partial waveguiding: the laser power falls down to zero at some particular wavelengths, whatever the beam adjustments are. We show that this effect is related to a periodic increase of the cavity losses, with a period depending on the dimensions of the waveguide. A code including diffraction effects exhibits good agreement with the measurements.
Article Text
References (8)
- M. E. Couprie and J. M. Ortega, Analusis 28, 725 (2000).
- J. M. Ortega, F. Glotin, and R. Prazeres, Infrared Phys. Technol. 49, 133 (2006); R. Prazeres, F. Glotin, and J. M. Ortega, Nucl. Instrum. Methods Phys. Res., Sect. A 528, 83 (2004), http://clio.lcp.u-psud.fr/clio_eng/clio_eng.htm.
- Li Yi Lin and A. F. G. van der Meer, Rev. Sci. Instrum. 68, 4342 (1997), http://www.rijnhuizen.nl/research/guthz/felix_felice/.
- P. Michel et al., in Proceedings of FEL 2006—BESSY, Berlin, Germany, pp. 488–491, http://cern.ch/AccelConf/f06/PAPERS/TUCAU02.PDF.
- R. Prazeres and V. Serriere, Nucl. Instrum. Methods Phys. Res., Sect. A 475, 524 (2001); R. Prazeres, Eur. Phys. J. Appl. Phys. 16, 209 (2001).
- R. Prazeres, F. Glotin, and J. M. Ortega, Eur. Phys. J. Appl. Phys. 29, 223 (2005).
- G. Dattoli, J. Appl. Phys. 84, 2393 (1998); G. Dattoli and P. L. Ottaviani, Opt. Commun. 204, 283 (2002); G. Dattoli, T. Letardi, J. M. J. Madey, and A. Renieri, Nucl. Instrum. Methods Phys. Res., Sect. A 237, 326 (1985).
- J. W. J. Verschuur, G. J. Ernst, B. M. van Oerle, and D. Bisero, Opt. Commun. 133, 229 (1997).
