Efficient Multiphysics and Multiscale FDTD Methods for Terahertz Plasmonic Devices

Authors

  • Shubhendu Bhardwaj Electrical and Computer Engineering Florida International University 10555 W. Flagler Street, Miami, FL, USA

Keywords:

FDTD, graphene, HEMT, hydrodynamic, plasmonic modeling, terahertz

Abstract

Modeling terahertz plasmonic devices is a multiphysics and multiscale problem. Due to high mesh density in the electron transport regions, the simulation times are long. In this work, we develop hybrid coupled finite difference time domain (FDTD) methods for fast design of terahertz plasmonic devices. The methods employ implicit solution (using Alternate Direction Implicit), coupled with hydrodynamic modeling for plasmonic applications. The theory, simulation and timeimprovement related results will be presented at the conference.

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References

M. Dyakonov and M. Shur, “Detection, mixing, and frequency multiplication of terahertz radiation by two-dimensional electronic fluid,” IEEE Transactions on Electron Devices, vol. 43, no. 3, pp. 380–387, Mar. 1996.

S. Bhardwaj, N. K. Nahar, S. Rajan, and J. L. Volakis, “Numerical analysis of terahertz emissions from an ungated hemt using full-wave hydrodynamic model,” IEEE Transactions on Electron Devices, vol. 63, no. 3, pp. 990–996, 2016.

T. Namiki, “A new FDTD algorithm based on alternating-direction implicit method,” IEEE Transactions on Microwave Theory and Techniques, vol. 47, no. 10, pp. 2003–2007, 1999.

S. Wang, F. L. Teixeira, and J. Chen, “An iterative ADI-FDTD with reduced splitting error,” IEEE Microwave and Wireless Components Letters, vol. 15, no. 2, pp. 92–94, 2005.

S. G. Garcia, Tae-Woo Lee and S. C. Hagness, "On the accuracy of the ADI-FDTD method," in IEEE Antennas and Wireless Propagation Letters, vol. 1, pp. 31-34, 2002.

Allen Taflov and S. C. Hagness. “Computational Electrodynamics: the finite-difference time-domain method,” Artech House, 2005.

S. Bhardwaj, F. L. Teixeira, and J. L. Volakis, "Fast modeling of terahertz plasma-wave devices using unconditionally stable FDTD methods," in IEEE Journal on Multiscale and Multiphysics Computational Techniques, vol. 3, pp. 29-36, 2018.

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Published

2019-02-01

How to Cite

[1]
Shubhendu Bhardwaj, “Efficient Multiphysics and Multiscale FDTD Methods for Terahertz Plasmonic Devices”, ACES Journal, vol. 34, no. 02, pp. 218–219, Feb. 2019.

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