noun
laser beam
Refers to the beam of light produced by a laser device. Used in technical and everyday contexts.
レーザー光線で距離を正確に測る。
Measure the distance accurately with a laser beam.
レーザー refers to the laser device or technology itself, while レーザー光線 specifically means the beam of light emitted by it.
Compound of レーザー (from English 'laser') and 光線 (light ray, beam).