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November 2025

2025/2026
The document gives a clear overview of how lasers work, covering absorption, spontaneous and stimulated emission, population inversion, and the role of the resonant cavity. It explains the key features of laser light—coherence, monochromaticity, directionality, and high intensity—and includes brief examples of common lasers. It’s a crisp, exam-focused summary of the core ideas in laser physics.
manthanborse
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