Share Email Print
cover

Proceedings Paper

Production of temporally flat top UV laser pulses for SPARC photo-injector
Author(s): M. Petrarca; P. Musumeci; M. C. Mattioli; C. Vicario; G. Gatti; A. Ghigo; S. Cialdi; I. Boscolo
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In the SPARC photoinjector, the amplified Ti:Sa laser system is conceived to produce an UV flat top pulse profile required to reduce the beam emittance by minimizing the non-linear space charge effects in the photoelectrons pulse. Beam dynamic simulations indicate that the optimal pulse distribution must be flat top in space and time with 10 ps FWHM duration, 1 ps of rise and fall time and a limited ripple on the plateau. In a previous work it was demonstrated the possibility to use a programmable dispersive acousto-optics (AO) filter to achieve pulse profile close to the optimal one. In this paper we report the characterization of the effects of harmonics conversion on the pulse temporal profile. A technique to overcome the harmonics conversion distortions on the laser pulses at the fundamental wavelength in order to obtain the target pulse profile is explained too. Measurements and simulations in the temporal and spectral domain at the fundamental laser wavelength and at the second and third harmonics are presented in order to validate our work. It is also described a time diagnostic device for the UV pulses.

Paper Details

Date Published: 23 May 2007
PDF: 5 pages
Proc. SPIE 6634, International Conference on Charged and Neutral Particles Channeling Phenomena II, 66341I (23 May 2007); doi: 10.1117/12.742108
Show Author Affiliations
M. Petrarca, Univ. degli Studi di La Sapienza (Italy)
P. Musumeci, Univ. degli Studi di La Sapienza (Italy)
M. C. Mattioli, Univ. degli Studi di La Sapienza (Italy)
C. Vicario, Lab Nazionali di Frascati, INFN (Italy)
G. Gatti, Lab Nazionali di Frascati, INFN (Italy)
A. Ghigo, Lab Nazionali di Frascati, INFN (Italy)
S. Cialdi, Istituto Nazionale di Fisica Nucleare (Italy)
I. Boscolo, Istituto Nazionale di Fisica Nucleare (Italy)


Published in SPIE Proceedings Vol. 6634:
International Conference on Charged and Neutral Particles Channeling Phenomena II

© SPIE. Terms of Use
Back to Top