Click here for Wookieepedia's article on the Canon version of this subject.  This article covers the Legends version of this subject. 

OnALegendsArticleGoToCanon

The emitter matrix, also referred to as a high energy flux aperture[1] was a crucial component of the lightsaber. A saber's blade was emitted out the handle through the emitter matrix which kept a tight magnetic grip on the beam and allowed it to reliably extend to a predetermined length. A lightsaber would explode shortly after ignition if the emitter matrix was inverted - a tactic used once by Petro, a Jedi initiate, to subdue a group of pirates.

Appearances

Sources

Notes and references