The Science of Lasers
Energy added to electrons causes them to emit light as they return to their ground state, resulting in incoherent light. The concept of stimulated emission, proposed by Einstein, led to the development of lasers in the 1950s, showcasing how specific photons can influence others to create coherent light. Despite early patent battles, the first functional laser was built using a ruby crystal, marking a significant advancement in optical technology.In this clip
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