Hologram creator (5)
I believe the answer is:
laser
'hologram creator' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for laser that I've seen before include "Device producing a narrow, intense beam of light" , "Powerful light source" , "Coherent light beam" , "Device that generates an intense beam of light" , "Scientific apparatus" .)