Describe essential condition to produce laser qction
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Explanation:
This phenomenon of building up of number of coherent photons so as to get an intense laser beam is called lasing action. Population inversion and optical pumping: In an order to produce laser beam there should be more number of stimulated emissions when compared to spontaneous emission.
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Conditions for lasing to occur
Medium with population inversion.
Pumping process to maintain the inversion.
Optical feedback (confining photons for long enough to allow them to stimulate further emission).
Explanation:
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