Properties of laser

A laser beam has following important characteristics:

  • Divergence or directionality:  laser is highly directional beam.
  • monochromaticity: laser is monochromatic that is it has single wavelength
  • brightness
  • coherence

Reference: This article is referred from my authored book “optics and lasers” having ISBN 81-272-2948-2. In case of any doubt, post in the comment section.

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