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VLSI Design
Volume 8 (1998), Issue 1-4, Pages 407-412

Modeling of Radiation Fields in a Sub-Picosecond Photo-Conducting System

1Departrent of Electrical and Computer Engineering, Oregon State University, Corvallis, Oregon 97331, USA
2Department of Electrical Engineering, Arizona State University, Tempe, Arizona 85287, USA

Copyright © 1998 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


FDTD and Monte Carlo methods are combined to simulate the terahertz radiation from a coplanar photoconducting structure. The simulation tool under consideration allows calculation of potentials, particle distributions, current densities, and the near field electromagnetic fields anywhere in the computational domain. To model the far field radiation, it is not efficient nor, in many cases, physically possible at present to use the FDTD technique directly because of the excessive computational burden. Techniques are discussed for modeling both the near field and the far field radiation. Computational results showing the far field radiation are in qualitative agreement with published experimental results.