Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/153973
Title: SIMULATION OF WAVE PROPAGATION WITH ACTIVE MATERIALS EMBEDDED IN PHOTONIC CRYSTALS USING FDTD METHOD
Authors: HUANG BIN
Keywords: Finite-Difference Time-Domain
Electromagnetic Dynamics
Photonics
Rate Equations
Four-level Two-electron Model
Optical Pumping
Semiconductor
Crystal Devices
UNIX Programming
MEEP
Issue Date: 2010
Citation: HUANG BIN (2010). SIMULATION OF WAVE PROPAGATION WITH ACTIVE MATERIALS EMBEDDED IN PHOTONIC CRYSTALS USING FDTD METHOD. ScholarBank@NUS Repository.
Abstract: We implement a four-level two-electron Finite-Difference Time-Domain (FDTD) computational model for electrodynamics simulation of complex material media. This model allows us to study the medium carrier density dynamics together with its influence on propagating electromagnetic signal. We show the rate equation for the four-level model and incorporate Pauli Exclusion Principle into the rate equation. The two electrons model allows us to investigate optical pumping and probing in semiconductor devices. This FDTD model is sufficiently complex and, yet, computationally efficient, which allows us to simulate nano-photonic devices with complex electromagnetic structures requiring simultaneous solution of the medium-field dynamics in space and time. Applications include direct-gap semiconductors, ultrafast optical phenomena, and multimode microdisk lasers. This model is modified from an existing UNIX package developed by MIT, namely the MIT Electromagnetic Equation Propagation (MEEP). Examples of Scheme and C++ program to configure the desired waveguide form and electromagnetic dynamics are shown to illustrate the usage of MEEP. Details on the implementation of the four-level two-electron model are explained as well as the test cases that illustrates the end results.
URI: https://scholarbank.nus.edu.sg/handle/10635/153973
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