Multiphysics modeling of THz photoconductive antennas

Author

Burford, Nathan M. ; El-Shenawee, Magda

Author_Institution

Microelectron.-Photonics Program, Univ. of Arkansas, Fayetteville, AR, USA

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

A new method for modeling terahertz photoconductive antennas (THz-PCAs) is presented. The finite element method solver COMSOL® is utilized to combine Maxwell´s, Poisson´s and the Drift-Diffusion equations into a single 2D/3D multiphysics model. This model can then be used to computationally investigate and design THz-PCAs with more complex geometries compared with current numerical methods. Preliminary results show good agreement between the proposed model and the standard analytical methods for calculating photocurrent generation in THz-PCAs, as well as supporting previously reported experimental observations.

Keywords

Maxwell equations; Poisson equation; finite element analysis; photoconducting devices; photoconductivity; submillimetre wave antennas; terahertz wave devices; 2D multiphysics model; 3D multiphysics model; COMSOL; Maxwell equation; Poisson equation; THz-PCA; drift-diffusion equation; finite element method; numerical method; photocurrent generation calculation; standard analytical method; terahertz photoconductive antenna multiphysics modeling; Antennas; Electrodes; Equations; Mathematical model; Optical pulses; Photoconductivity; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956180

Filename

6956180