Devil I know
I’ve been looking at Chapters 6 and 11 of Prof. Happer’s Optically Pumped Atoms (for sections about excited state depolarization by collisions with buffer gas), but I fear I don’t really understand them—exactly how the mathematics correspond to physics, and exactly how the spin-exchange with fictitious atom produces the pressure broadening (without also causing depolarization of ground state).
Well, so it looks like I’ll be sticking with the devil I know: writing terms into my optical Bloch equations to model pressure broadening and excited state depolarization piece by piece … in physically (and least to me) intuitive terms.
Maybe one day I’ll understand Prof. Happer’s approach.
