Assertion: beam | /r/Synonym | collimated beams
Facets:
Source sentences:
text: Beams with very small divergence, i.e., with approximately constant beam radius over significant propagation distances, are called collimated beams.
text: For beams with non-ideal beam quality, the Rayleigh length is effectively reduced by the so-called M2 factor, so that the beam waist radius needs to be larger for a beam to be collimated.
text: Beams with very small divergence, i.e., with approximately constant beam radius over significant propagation distances, are called collimated beams; they can be generated from strongly divergence beams with beam collimators.