TY - JOUR

T1 - UV/VUV free electron laser oscillators and applications in materials science

AU - Marsi, Marino

AU - Locatelli, A.

AU - Trovò, Mauro

AU - Walker, Richard P.

AU - Couprie, M. E.

AU - Garzella, David

AU - Nahon, L.

AU - Nutarelli, D.

AU - Renault, E.

AU - Gatto, Alexandre

AU - Kaiser, Norbert

AU - Giannessi, L.

AU - Günster, Stefan

AU - Ristau, Detlev

AU - Poole, M. W.

AU - Taleb-Ibrahimi, A.

N1 - Funding information: The construction of the European FEL project at Elettra has been partially supported by the EC under RTD contract No. ERBFMGE-CT98-0102 during the period May 1998 { April 2001. A. Gatto and the user experiments at SuperACO are supported by EC TMR Network contract No. ERBFMRX-CT980245

PY - 2002/2

Y1 - 2002/2

N2 - After having reached the status of user facilities in the infrared, Free Electron Laser (FEL) oscillators are becoming interesting light sources for scientific research also in the UV/VUV wavelength region. Thanks to continuous advances in accelerator and mirror technology, it has been possible to reach with tunability energies which are hardly accessible with conventional lasers (the European FEL project at Elettra recently lased below 190 nm), with the realistic perspective of reaching even shorter wavelengths in the near future. Thanks to their unique properties, such as tunability, full coherence, high intensity, spectral and temporal stability, they offer new opportunities for many kinds of spectroscopy: in particular, storage ring FELs are ideal sources for pump-probe experiments in conjunction with synchrotron radiation, as demonstrated by a series of studies of the nonequilibrium space charge distribution at photoexcited Si surfaces and interfaces performed at SuperACO. Besides, especially when operated at shorter wavelengths, FEL oscillators are very attractive also for one-photon experiments requiring high power and full tunability. We describe here the properties of the sources, and provide an overview of the experiments that have been performed and that are planned to exploit the new opportunities they offer.

AB - After having reached the status of user facilities in the infrared, Free Electron Laser (FEL) oscillators are becoming interesting light sources for scientific research also in the UV/VUV wavelength region. Thanks to continuous advances in accelerator and mirror technology, it has been possible to reach with tunability energies which are hardly accessible with conventional lasers (the European FEL project at Elettra recently lased below 190 nm), with the realistic perspective of reaching even shorter wavelengths in the near future. Thanks to their unique properties, such as tunability, full coherence, high intensity, spectral and temporal stability, they offer new opportunities for many kinds of spectroscopy: in particular, storage ring FELs are ideal sources for pump-probe experiments in conjunction with synchrotron radiation, as demonstrated by a series of studies of the nonequilibrium space charge distribution at photoexcited Si surfaces and interfaces performed at SuperACO. Besides, especially when operated at shorter wavelengths, FEL oscillators are very attractive also for one-photon experiments requiring high power and full tunability. We describe here the properties of the sources, and provide an overview of the experiments that have been performed and that are planned to exploit the new opportunities they offer.

UR - http://www.scopus.com/inward/record.url?scp=0036463034&partnerID=8YFLogxK

U2 - 10.1142/S0218625X02001768

DO - 10.1142/S0218625X02001768

M3 - Article

AN - SCOPUS:0036463034

VL - 9

SP - 599

EP - 607

JO - Surface Review and Letters

JF - Surface Review and Letters

SN - 0218-625X

IS - 1

ER -