In this video, I continue working with two-level systems to derive Fermi's golden rule. I also use for the first time an extremely common quantum-mechanical 'trick' (read: hack) to simplify equations - taking the inner product. This is used to eliminate the wavefunction from our differential equation and gives us an explicit formula for the wavefunction coefficients c1 and c2.
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This is part of my graduate series on optoelectronics / photonics, and is based primarily on Coldren's book on Lasers as well as graduate-level coursework I have taken in the EECS department at UC Berkeley.
Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.
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