Question: threshold population inversion has increased by factor of 5.125. What gain (G) is required for the above laser to lase? (i.e, to obtain oscillation). Solve

threshold population inversion has increased by factor of 5.125. What gain (G) is required for the above laser to lase? (i.e, to obtain oscillation). Solve both for the original "clean" case and the "dirty" case, i.e., 1. 1 = 2 = 0.99, and 2. 1 = 0.99 and 2 = 0.91

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