Intense beam (5)
I believe the answer is:
laser
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">intense beam</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for laser that I've seen before include "E.g. surgical light-beam" , "Device that generates an intense ray of light" , "Device that produces an intense beam of light" , "light-intensifier" , "Source of light; type of printer" .)