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What is Unit-3 Laser and Coherence Lecture Notes about?

The document discusses the principles and characteristics of lasers, including the process of light amplification through stimulated emission of radiation, as predicted by Einstein. It covers key concepts such as coherence, directionality, and monochromaticity of laser light, as well as the mechanisms of stimulated absorption and emission. Additionally, it outlines the components of a laser system, including the active medium and pumping source necessary for achieving population inversion and amplification.

Author

suhani.kumari.20002006

Language

EN