Rami Arieli: " The Laser Adventure" Chapter 1 Summary

Summary: Laser Radiation Properties

1. Very small divergence of the beam. The beam is almost a parallel beam and move in one direction in space - Directionality.
2. High degree of monochromaticity. The radiation is almost one wavelength, as can be measured by the very narrow spectral width.
3. Coherence.

The combination of these properties gives the laser radiation many advantages, like achieving very high power densities, not available from other sources.

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