In Chapter 1 it was stated that the most characteristic properties of laser beams are: (1) Monochromaticity; (2) coherence (spatial and temporal); (3) directionality; (4) brightness. The material presented in earlier chapters now allows us to examine these properties in more detail and compare them with the properties of conventional light sources (thermal sources).
KeywordsLaser Beam Gaussian Beam Spatial Coherence Beam Divergence Temporal Coherence
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