laser beam

noun
a beam of radiation produced from a laser, used in surgery, communications, weapons systems, printing, recording and various industrial processes.

Origin:
1960–65

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To laser beam
Example sentences
So you can either shoot a laser beam out the back of a spacecraft or bounce one
  off a big solar sail to drive something.
The microscope uses a laser beam to map the surface of the plates.
In the case of lidar, the waves are in the form of an infra-red laser beam.
The team sends a laser beam through a vacuum that sits in the centre of a
  powerful magnet.
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