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What is Unit 3-Laser Notes about?
The document provides an overview of photonics and lasers, defining key concepts such as laser, electromagnetic waves, and their differences. It explains the principles of spontaneous absorption, spontaneous emission, and stimulated emission, which are fundamental to laser operation, along with the conditions necessary for laser action. Additionally, it discusses the construction and working of He-Ne and semiconductor lasers, their applications, and the principles of optical fibers including total internal
- Author
- basavvarajsgidnavar
- Language
- EN