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UMBC High Performance Computing Facility
Please note that this page is under construction. We are documenting the 240-node cluster maya that will be available after Summer 2014. Currently, the 84-node cluster tara still operates independently, until it becomes part of maya at the end of Summer 2014. Please see the 2013 Resources Pages under the Resources tab for tara information.
Modeling High-Current Photodetectors
Curtis Menyuk, Department of Computer Science and Electrical Engineering
Yue Hu, Department of Computer Science and Electrical Engineering

The nonlinear response of high-current photodetectors plays an important role in limiting the performance of RF-photonic devices. Yet, the physical reasons for this nonlinear response remain poorly understood, and the only comprehensive simulations of this effect were carried out almost a decade ago when the computational tools and computers were far less powerful than they are now. In particular, almost all prior work used a simple one-dimensional model of the photodetector, which ignored the radial dependence of the light beam. We are intending to carry out work in which we solve the drift-diffusion equations, taking into account radial effects for a high-current p-i-n photodetector using finite-difference methods. We will be carrying out this work in collaboration with experimental researchers at the Naval Research Laboratory.