Seeding of sparc-FEL with a tunable fibre-based source

N.Y. Joly, G. De Ninno, B. Mahieu, F. Ciocci, L. Giannessi, A. Petralia, M. Quattromini, G. Gatti, J.V. Rau, V. Petrillo, W. Chang, P. Hölzer, K. Mak, P. Russell, F. Tani, J.C. Travers, S. Bielawski, M.-E. Couprie, M. Labat, T. Tanikawa

Research output: Contribution to conferencePaper


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 the SPARC-FEL with a fibre-based tunable ultraviolet source. The seed generation system consists of a kagome hollow-core photonic crystal fibre (HC-PCF) 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 strongly 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. Copyright © 2012 by the respective authors.
Original languageEnglish
Publication statusPublished - 2012
Externally publishedYes
Event34th International Free Electron Laser Conference, FEL 2012 - , Japan
Duration: 1 Jan 2012 → …


Conference34th International Free Electron Laser Conference, FEL 2012
Period1/1/12 → …


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Joly, N. Y., De Ninno, G., Mahieu, B., Ciocci, F., Giannessi, L., Petralia, A., ... Tanikawa, T. (2012). Seeding of sparc-FEL with a tunable fibre-based source. Paper presented at 34th International Free Electron Laser Conference, FEL 2012, Japan.