Lightsabres

Thinking about a tech level for lightsabres, what would one be in
Traveller terms ?

Maybe some sort of plasma/fusion reaction very  tightly  contained  (More
TL17+  magic) ? That would explain it's habit of slicing through anything
it touched, and if the Starwars 'Blasters' use  some  sort  of  projected
magnetic /gravitic  field to fire bolts of plasma, then the field holding
the lightsabre together could possibly deflect them.

Any Starwars fans out there got an 'official' explanation ?  Anyone  want
to  guess  at  a  tech  level  for  such a thing ? Any Vargr who wouldn't
morgage their starship to get their hands on such a new toy ?

			Simon Anderson