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EXPERIMENTAL CHARACTERIZATION OF SEEDED FEL AMPLIFIER AT THE NSLS SDL.

Conference ·
OSTI ID:861063
Experimental characterization of a near-IR FEL amplifier at the NSLS SDL is presented in this report. SASE was observed from 0.8-1 {micro}m with 5 orders of magnitude gain. We have experimentally demonstrated saturation of a laser seeded FEL amplifier and control of the FEL output by the seed laser. Nonlinear harmonics have also been explored. The FEL pulse length for the first three harmonics was experimentally characterized and the increase of the FEL pulse length with harmonic number was observed for the first time. Computer simulation confirmed that the observed wide spectrum of the laser seeded FEL is due to the positive chirp of the seed laser.
Research Organization:
BROOKHAVEN NATIONAL LABORATORY
Sponsoring Organization:
DOE/SC
DOE Contract Number:
AC02-98CH10886
OSTI ID:
861063
Report Number(s):
BNL--75168-2005-CP; KC0204011
Country of Publication:
United States
Language:
English

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