We report the characterization of a high power, high repetition rate, mode-
locked laser system to be used in continuous wave and pulsed electron accel
erators for the generation of polarized electron beams. The system comprise
s of an external cavity diode laser and a harmonically mode-locked Ti:Sapph
ire oscillator and it can provide up to 3.4 W average power, with a corresp
onding pulse energy exceeding 1 nJ at 2856 MHz repetition rate. The system
is tunable between 770-785 and 815-835 nm with two sets of diodes for the e
xternal cavity diode laser. (C) 1999 Elsevier Science B.V. All rights reser
ved.