https://doi.org/10.1140/epjd/e2002-00121-4
A new powerful source for coherent VUV radiation: Demonstration of exponential growth and saturation at the TTF free-electron laser
1
Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603 Hamburg, Germany
2
Hamburg University, Inst. f. Experimentalphysik, Notkestrasse 85, 20603 Hamburg, Germany
3
Deutsches Elektronen-Synchrotron DESY, Platanenallee 6, 15738 Zeuthen, Germany
4
INFN-LNF, via E. Fermi 40, 00044 Frascati, Italy
5
INFN-Roma2, via della Ricerca Scientifica 1, 00100 Roma, Italy
6
Fermi National Accelerator Laboratory, MS 306, P.O. Box 500, Batavia, IL 60510 USA
7
Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia
8
Laboratoire de l'Accélérateur Linéaire, IN2P3-CNRS, Université de Paris-Sud, B.P. 34, 91898 Orsay, France
9
Darmstadt University of Technology, Institut für Kernphysik,
Schlossgartenstr. 9, 64289 Darmstadt, Germany
10
Institute for Nuclear Research of RAS, 117312 Moscow, 60th October Anniversary prospect 7A, Russia
11
Yerevan Physics Institute, 2 Alikhanyan Brothers str., 375036 Yerevan, Armenia
12
RWTH Aachen-Physikzentrum, Phys. Inst. IIIa, Sommerfeldstr. 26-28, 52056 Aachen, Germany
13
CEA Saclay, 91191 Gif-sur-Yvette, France
14
Darmstadt University of Technology, F.B. 18, Fachgebiet TEMF, Schlossgartenstr. 8, 64289 Darmstadt, Germany
15
Institute of Physics, Polish Academy of Sciences, al. Lotnikow, 32/46, 02-668 Warsaw, Poland
16
INFN Milano-LASA, via Fratelli Cervi 201, 20090 Segrate (MI), Italy
17
Max-Born-Institute, Max-Born-Str. 2a, 12489 Berlin, Germany
18
Warsaw University of Technology, Institute of Physics, Poland
19
Rhein-Ahr-Campus Remagen, Südallee 2, 53424 Remagen, Germany
Corresponding author: a joerg.rossbach@desy.de
Received:
26
April
2002
Published online:
28
June
2002
We present experimental evidence that the free-electron laser at the TESLA Test Facility has reached the maximum power gain of 107 in the vacuum ultraviolet (VUV) region at wavelengths between 80 and 120 nm. At saturation the FEL emits short pulses with GW peak power and a high degree of transverse coherence. The radiation pulse length can be adjusted between 30 fs and 100 fs. Radiation spectra and fluctuation properties agree with the theory of high gain, single-pass free-electron lasers starting from shot noise.
PACS: 41.60.Cr – Free-electron lasers / 29.17.+w – Electrostatic, collective, and linear accelerators / 29.27.-a – Beams in particle accelerators / 41.75.Lx – Other advanced accelerator concepts / 29.25.Bx – Electron sources
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
