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dc.contributor.authorChen, Liang
dc.contributor.authorBagci, Hakan
dc.date.accessioned2021-04-14T06:38:59Z
dc.date.available2021-04-14T06:38:59Z
dc.date.issued2021
dc.identifier.citationChen, L., & Bagci, H. (2021). Analysis of Screening Effects on Terahertz Photoconductive Devices using a Fully-Coupled Multiphysics Approach. Journal of Lightwave Technology, 1–1. doi:10.1109/jlt.2021.3072890
dc.identifier.issn1558-2213
dc.identifier.doi10.1109/JLT.2021.3072890
dc.identifier.urihttp://hdl.handle.net/10754/668740
dc.description.abstractThe terahertz current generated by a photoconductive device (PCD) saturates as the power of the input optical pump is increased. This behavior is induced by various screening effects that stem from the interactions between electromagnetic (EM) fields and semiconductor carriers. In this work, these screening effects are numerically analyzed for the first time using a fully-coupled multiphysics approach. Unlike the previously developed simulation frameworks, this approach rigorously models the nonlinear coupling between the EM fields and the carriers and therefore is capable of accounting for the screening effects. It is demonstrated that the results obtained using this multiphysics approach and actual experiments are in excellent agreement. The optical- and radiation-field screening effects are identified in the simulation results and the optical-field screening is found to play a more dominant role in the saturation of the PCD output under high optical pump power levels.
dc.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology Office of Sponsored Research under Award 2016-CRG5-2953 and Award 2019-CRG8-4056. The authors would like to thank the KAUST Supercomputing Laboratory (KSL) for providing the required computational resources.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/9403899/
dc.relation.urlhttps://ieeexplore.ieee.org/document/9403899/
dc.relation.urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9403899
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 License.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectMultiphysics simulation
dc.subjectoptoelectronic device
dc.subjectphotoconductive antenna
dc.subjectsaturation
dc.subjectscreening effect
dc.subjectterahertz photoconductive device
dc.subjectunit-cell model
dc.titleAnalysis of Screening Effects on Terahertz Photoconductive Devices using a Fully-Coupled Multiphysics Approach
dc.typeArticle
dc.contributor.departmentComputational Electromagnetics Laboratory
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalJournal of Lightwave Technology
dc.eprint.versionPublisher's Version/PDF
dc.identifier.arxivid2105.00820
kaust.personChen, Liang
kaust.personBagci, Hakan
kaust.grant.number2016-CRG5-2953
kaust.grant.number2019-CRG8-4056
refterms.dateFOA2021-04-14T06:39:45Z
kaust.acknowledged.supportUnitCRG
kaust.acknowledged.supportUnitKAUST Supercomputing Laboratory (KSL)
kaust.acknowledged.supportUnitOffice of Sponsored Research


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