User blog comment:Gen. Grievous1138/Story of how I entered Middle-Earth/@comment-4750818-20141006161306/@comment-25012056-20141007223942

It is a crystal-refined laser blade. Several crystals and focusing lenses warp the beam to curve around meter from the hilt. The energy is fired out of a heavy-duty power cell into the crystals and lenses, then travels through energy modulators and cycling field energizers and out through the hilt. The blade is rounded, spending the energy out into a blade, which bends and curves back after a meter, sending the energy through power transits back into the main power cell to be cycled around again. The blade is masterfully efficient, using all its energy at once yet never losing any.

Good enough? :-P

Gen. Grievous1138 (talk) 22:39, October 7, 2014 (UTC)