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Permanent link (DOI): https://doi.org/10.7939/R3WK62

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An investigation of magnetically active terahertz devices Open Access

Descriptions

Other title
Subject/Keyword
magnetoresistance
terahertz time-domain spectroscopy
terahertz
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Straatsma, Cameron J. E.
Supervisor and department
Elezzabi, Abdulhakem Y. (Electrical and Computer Engineering
Examining committee member and department
Chow, Kim H. (Physics)
Tsui, Ying Y. (Electrical and Computer Engineering)
Department
Department of Electrical and Computer Engineering
Specialization

Date accepted
2011-08-15T18:15:39Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
This thesis work focuses on the investigation of utilizing magnetoresistance phenomena in ferromagnetic metals to control the propagation of terahertz electromagnetic radiation confined to subwavelength structures. The purpose of this investigation is to study these phenomena as a potential candidate for use in active plasmonic devices at terahertz frequencies. To accomplish this task, a terahertz time-domain spectroscopy system incorporating a high field strength electromagnet is designed, built and characterized. Next, the effects of particle size on the near-field coupling of localized surface plasmon modes in a random terahertz plasmonic metamaterial are presented. Following this, evidence is given for the use of the giant magnetoresistance effect in modulating the transparency of a random terahertz plasmonic metamaterial. The final study utilizes the new terahertz time-domain spectroscopy system to investigate the effects of magnetoresistance on the electromagnetic response of periodic terahertz plasmonic metamaterials.
Language
English
DOI
doi:10.7939/R3WK62
Rights
License granted by Cameron Straatsma (cjs7@ualberta.ca) on 2011-08-09T17:00:15Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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