FEL2012 - List of Authors (Chang, W.)

Paper	Title	Page
TUPD17	Seeding of SPARC-FEL with a Tunable Fibre-based Source	269
	N.Y. Joly University of Erlangen-Nuremberg, Erlangen-Nuremberg, Germany S. Bielawski PhLAM/CERCLA, Villeneuve d'Ascq Cedex, France W. Chang, P. Hölzer, K. Mak, P.St.J. Russell, F. Tani, J.C. Travers Max Planck Institute for the Science of Light, Erlangen, Germany F. Ciocci, L. Giannessi, A. Petralia, M. Quattromini ENEA C.R. Frascati, Frascati (Roma), Italy M.-E. Couprie, M. Labat, T. Tanikawa SOLEIL, Gif-sur-Yvette, France G. De Ninno, B. Mahieu Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy G. Gatti INFN/LNF, Frascati (Roma), Italy V. Petrillo Istituto Nazionale di Fisica Nucleare, Milano, Italy J.V. Rau ISM-CNR, Rome, Italy
	Instead of seeding a free electron laser in the UV-VUV with a frequency doubled or tripled laser or high order harmonics, here we investigate and present the first results on seeding SPARC-FEL with a fiber-based tunable ultraviolet source. The seed generation system consists of a kagomé hollow-core photonic crystal fiber filled with noble gas. Diffraction-limited DUV pulses of >50 nJ and fs-duration which are continuously tunable from below 200 nm to above 300 nm are generated. The process is based on soliton-effect self-compression of the pump pulse down to a few optical cycles, accompanied by the emission of a resonant dispersive wave in the DUV spectral region. The quality of the compression highly depends on the pump pulse duration, and ideally, pulses <60 fs should be used. Our experimental set-up and associated GENESIS simulations enable us to study the utility of the seed tunability, and the influence of the seed quality, on the performance of the SPARC-FEL in the 200-300 nm range.

Paper

Title

Page

Seeding of SPARC-FEL with a Tunable Fibre-based Source

269

N.Y. Joly
University of Erlangen-Nuremberg, Erlangen-Nuremberg, Germany
S. Bielawski
PhLAM/CERCLA, Villeneuve d'Ascq Cedex, France
W. Chang, P. Hölzer, K. Mak, P.St.J. Russell, F. Tani, J.C. Travers
Max Planck Institute for the Science of Light, Erlangen, Germany
F. Ciocci, L. Giannessi, A. Petralia, M. Quattromini
ENEA C.R. Frascati, Frascati (Roma), Italy
M.-E. Couprie, M. Labat, T. Tanikawa
SOLEIL, Gif-sur-Yvette, France
G. De Ninno, B. Mahieu
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
G. Gatti
INFN/LNF, Frascati (Roma), Italy
V. Petrillo
Istituto Nazionale di Fisica Nucleare, Milano, Italy
J.V. Rau
ISM-CNR, Rome, Italy

Instead of seeding a free electron laser in the UV-VUV with a frequency doubled or tripled laser or high order harmonics, here we investigate and present the first results on seeding SPARC-FEL with a fiber-based tunable ultraviolet source. The seed generation system consists of a kagomé hollow-core photonic crystal fiber filled with noble gas. Diffraction-limited DUV pulses of >50 nJ and fs-duration which are continuously tunable from below 200 nm to above 300 nm are generated. The process is based on soliton-effect self-compression of the pump pulse down to a few optical cycles, accompanied by the emission of a resonant dispersive wave in the DUV spectral region. The quality of the compression highly depends on the pump pulse duration, and ideally, pulses <60 fs should be used. Our experimental set-up and associated GENESIS simulations enable us to study the utility of the seed tunability, and the influence of the seed quality, on the performance of the SPARC-FEL in the 200-300 nm range.