An atom with two energy levels corresponding to the transition (λo= 1 μm, tsp = 3, ms, δν = 107 hz, lorentzian lineshape) is placed in a resonator of volume v= 100 cm3 and refractive index n = 1. two excite modes (one at center frequency νo and the other at νo+ δν) are excited with 1,000 photons each. (a)determine the probability density pst for stimulation emission. the peak transition cross section is given by σ(ν0)=λ02/2π.(b)estimate the optical intensity (in mw/cm2) of this resonator.