A Dual-mesh Framework for Multiphysics Simulation of Photoconductive Terahertz Devices
Type
Conference PaperAuthors
Chen, Liang
Bagci, Hakan

KAUST Department
Computational Electromagnetics LaboratoryComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Date
2020-10-21Online Publication Date
2020-10-21Print Publication Date
2020-08Permanent link to this record
http://hdl.handle.net/10754/665839
Metadata
Show full item recordAbstract
The operation of a photoconductive terahertz (THz) device relies on optoelectronic interactions and THz radiation. Although these two processes are coupled, in simulations, they are often modeled separately due to the large difference between the frequencies of optical and THz electromagnetic waves. To model both processes in a single simulation, we propose a dual-mesh discontinuous Galerkin (DG) scheme. Optoelectronic interactions and THz radiation are accounted for by solving, respectively, a coupled system of Maxwell and drift-diffusion equations discretized on a fine mesh and only the Maxwell equations discretized on a coarse mesh. This approach uses an efficient high-order interpolation scheme to “connect” electric field and current discretized on these two meshes. The proposed scheme is validated against experimental results.Citation
Chen, L., & Bagci, H. (2020). A Dual-mesh Framework for Multiphysics Simulation of Photoconductive Terahertz Devices. 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science. doi:10.23919/ursigass49373.2020.9232184Conference/Event name
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio ScienceISBN
978-1-7281-5690-3Additional Links
https://ieeexplore.ieee.org/document/9232184/https://ieeexplore.ieee.org/document/9232184/
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9232184
ae974a485f413a2113503eed53cd6c53
10.23919/URSIGASS49373.2020.9232184