Copy and paste the r_ahsokasabs.pk3 from this zip file to your "base" folder,
the default path is "C:/Program Files/Lucas Arts/Star Wars Jedi Knight Jedi Academy/Game data/Base"
Ahsoka's katana-resembling lightsaber hilts from Star Wars Rebels.
For MP, choose them from the sab menu.
For SP, enable cheats with "helpusobi 1" through the console, then enter:
... or if you prefer dual-wielding them like she did,
saber ahsoka1 ahsoka2
... to play with the respective hilt(s).
None that I know of.
THIS FILE IS NOT MADE, DISTRIBUTED, OR SUPPORTED BY ACTIVISION, RAVEN SOFTWARE, OR LUCASARTS ENTERTAINMENT COMPANY LLC. ELEMENTS™ & © LUCASARTS ENTERTAINMENT COMPANY, LLC AND/OR ITS LICENSORS.