Characteristics of Laser Beam

1. Brightness and Intensity: Laser beam is highly and intense compared to ordinary light.

2. Coherence: The degree of spatial and temporal coherence of laser beam is very high. That is why two different laser beams can produce interference.

3. Directionality and Focus-ability: Laser beam is highly directional. In other words, the divergence of a laser beam even after traveling several thousand kilometers is very small. It also possible to focus a laser beam to an extremely fine spot.

4. Monochromaticity: Laser beam is highly monochromatic of almost single wavelength.