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Show transcribed image text Calculate the values of the Einstein A and B coefficients for the case of a transition at Lambda = 1. 15 mum with a lifetime of 120 ns (neon gas has a transition like this). How large would the spectral radiant energy density at this wavelength have to be to make the rate of stimulated emission be equal to the rate of spontaneous emission? Suppose the radiant energy is supplied in the form of a parallel beam of light with a cross-sectional area of 1.0 mm2. How much power would this beam have within a spectral interval of 0. 10 nm?