Photon Rate Equation Explained

  / edmundsj  
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In this video, we complete our expression for the photon rate equation by adding in the gain of the medium (just the negative absorption) to our rate equation. We find a complete differential equation in terms of the gain, group velocity, photon lifetime, and spontaneous emission parameters.

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.

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