Estimate the ratio of the rate of stimulated to spontaneous emission at three wavelengths: (a) 10 cm,
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Estimate the ratio of the rate of stimulated to spontaneous emission at three wavelengths:
(a) 10 cm, in the microwave
(b) 10−2 cm, in the far-IR
(c) 10−5 cm, in the near-infrared. Assume a blackbody source at 298 K.
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