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LASERS Session 1 (Spontaneous Emission, Stimulated Emission, Light Amplification)

*What does LASER stand for? In what respect it differ from an ordinary source of light?
*How LASERs are different compared to X-rays?
*Differentiate between spontaneous emission and stimulated emission of radiation.
*Define absorption. What is its role in a laser system?
*What is population inversion? Explain its significance in the operation of LASER.
*What is pumping in laser? Mention the types of pumping methods.
*Differentiate between stimulated emission and spontaneous emission.
*What is the role of resonant cavity in the operation of laser?
*Define – absorption, spontaneous emission, stimulated emission, metastable state, population inversion

Notes on this topic are available here : https://drive.google.com/file/d/1AHQQ...