Reflection for subwavelength annular mode in metals

Simple item page
dc.contributor.authorLi, Dan
dc.contributor.supervisorGordon, Reuven
dc.date.accessioned2011-10-06T20:15:00Z
dc.date.available2011-10-06T20:15:00Z
dc.date.copyright2011en_US
dc.date.issued2011-10-06
dc.degree.departmentDepartment of Electrical and Computer Engineering
dc.degree.levelMaster of Applied Science M.A.Sc.en_US
dc.description.abstractThe coaxial aperture structure has been under intensive study in recent years, particularly since it exhibits electromagnetic transmission resonances that are stronger than its circular aperture counterpart. In our work, we study the resonance properties of a coaxial aperture in a perfect electric conductor (PEC) and in a real metal. For PEC, The dielectric constant is in finite and for real metal the dielectric constant is fi nite. We develop theory for reflection phase and amplitude in coaxial aperture at the end of a metal plate. While most of the past works of coaxial aperture focused on the propagation of light within the aperture structure and ignore the reflection at end-face,we fi nd that the reflection properties at the end-face are critical to determine both the wavelength and quality of Fabry-Perot resonant transmission of coaxial structure. Finite-di fference time-domain calculations agree well with our theory. We fi rst consider the PEC case, and later to develop the theory to account for real metal case. In real metal, the phase and amplitude of reflection are quantitatively diff erent from PEC because of plasmonic e ffects. Such di fference arises from the new physics associated with surface plasmons. This work is of interest to ongoing studies of coaxial structures in metal fi lms, which could impact many fields including filter e ffect,optical sensing, optical trapping, near- field spectroscopy and metamaterials.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.bibliographicCitationD. Li and R. Gordon, "Electromagnetic transmission resonances for a single annular aperture in a metal plate," Phys. Rev. A, vol. 82, p. 041801, 2010.en_US
dc.identifier.bibliographicCitationB. Heshmat, D. Li, T. E. Darcie, and R. Gordon, "Tuning plasmonic resonances of an annular aperture in metal plate," Opt. E, vol. 19 (7), pp. 5912{5923, 2011.en_US
dc.identifier.bibliographicCitationD. Li, Y. Pang, and R. Gordon, "Design and fabrication of resonant coaxial nanoapertures in a gold film," IEEE NANO, 2011.en_US
dc.identifier.urihttp://hdl.handle.net/1828/3590
dc.languageEnglisheng
dc.language.isoenen_US
dc.rights.tempAvailable to the World Wide Weben_US
dc.subjectReflectionen_US
dc.subjectAnnular Modeen_US
dc.subjectcoaxial apertureen_US
dc.subjectMetalen_US
dc.subjectPECen_US
dc.titleReflection for subwavelength annular mode in metalsen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Li_Dan_MASc_2011.pdf
Size:
2.83 MB
Format:
Adobe Portable Document Format
Description:
Thesis of LiDan for MASC in 2011
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.74 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Electronic Theses and Dissertations (ETD)
 
University of Victoria Libraries

We acknowledge and respect the Lək̓ʷəŋən (Songhees and Esquimalt) Peoples on whose territory the university stands, and the Lək̓ʷəŋən and W̱SÁNEĆ Peoples whose historical relationships with the land continue to this day.