two levels of energy (ΔE = E2 – E1) and then becomes a photon, this is ultimately spontaneous emission. For lasers to be successful, a form called popular inversion must be met. This happens when a number of excited atoms within a system, is greater than atoms in a grounded state. Lasers are basically made up of photons, the basic unit of light. Photons are always moving, and moving at a constant speed of c = 2.998 x 10^8 (the speed of light) A basic laser only needs 3 sections to work, pump source…
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