This paper presents methods of simulating gain media in the finite difference time-domain (FDTD) algorithm utilizing a generalized polarization formulation. The gain can be static or dynamic. For static gain, Lorentzian and non-Lorentzian models are presented and tested. For the dynamic gain, rate equations for two-level and four-level models are incorporated in the FDTD scheme. The simulation results conform with the expected behavior of wave amplification and dynamic population inversion.
|Original language||English (US)|
|Title of host publication||2013 Saudi International Electronics, Communications and Photonics Conference|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|State||Published - Jul 11 2013|