Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide

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 pe...

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Main Authors:	R. Prazeres, F. Glotin, J.-M. Ortega
Format:	Article
Language:	English
Published:	American Physical Society 2009-01-01
Series:	Physical Review Special Topics. Accelerators and Beams
Online Access:	http://doi.org/10.1103/PhysRevSTAB.12.010701

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spelling	doaj-864fb8ec046f4c0097b1534aecc22baf2020-11-25T00:53:19ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022009-01-0112101070110.1103/PhysRevSTAB.12.010701Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguideR. PrazeresF. GlotinJ.-M. OrtegaA 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.http://doi.org/10.1103/PhysRevSTAB.12.010701
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	R. Prazeres F. Glotin J.-M. Ortega
spellingShingle	R. Prazeres F. Glotin J.-M. Ortega Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide Physical Review Special Topics. Accelerators and Beams
author_facet	R. Prazeres F. Glotin J.-M. Ortega
author_sort	R. Prazeres
title	Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide
title_short	Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide
title_full	Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide
title_fullStr	Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide
title_full_unstemmed	Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide
title_sort	analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide
publisher	American Physical Society
series	Physical Review Special Topics. Accelerators and Beams
issn	1098-4402
publishDate	2009-01-01
description	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.
url	http://doi.org/10.1103/PhysRevSTAB.12.010701
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Analysis of periodic spectral gaps observed in the tuning range of free-electron lasers with a partial waveguide

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