Experimental observation of cavity formation in composite metamaterials

Date
2008
Advisor
Instructor
Source Title
Optics Express
Print ISSN
10944087
Electronic ISSN
Publisher
Optical Society of American (OSA)
Volume
16
Issue
15
Pages
11132 - 11140
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

In this paper, we investigated one of the promising applications of left-handed metamaterials: composite metamaterial based cavities. Four different cavity structures operating in the microwave regime were constructed, and we observed cavity modes on the transmission spectrum with different quality factors. The effective permittivity and permeability of the CMM structure and cavity structure were calculated by use of a retrieval procedure. Subsequently, in taking full advantage of the effective medium theory, we modeled CMM based cavities as one dimensional Fabry-Perot resonators with a subwavelength cavity at the center. We calculated the transmission from the Fabry-Perot resonator model using the one-dimensional transfer matrix method, which is in good agreement with the measured result. Finally, we investigated the Fabry-Perot resonance phase condition for a CMM based cavity, in which the condition was satisfied at the cavity frequency. Therefore, our results show that it is possible to treat metamaterial based cavities as one-dimensional Fabry-Perot resonators with a subwavelength cavity. © 2008 Optical Society of America.

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Keywords
Coordinate measuring machines, Electronic equipment, Materials science, One dimensional, Resonators, Transfer matrix method, Cavity formation, Cavity frequencies, Cavity mode (CM), Cavity structures, Composite metamaterial (CMM), Composite metamaterials, Effective medium theory (EMT), Effective permittivity, Experimental observations, Fabry-Perot (FP) resonators, Fabry-Perot resonances, Left-handed metamaterials (LHM), Meas ured results, Metamaterial (MM), Microwave regime, One-dimensional, Optical society of America (OSA), Phase conditions, Quality factor (Q factor), Retrieval (MIR), Subwavelength cavity, Transfer matrix (TM), Transmission spectrums, Fabry-Perot interferometers, article, computer simulation, interferometry, materials, methodology, microwave radiation, radiation scattering, theoretical model, Computer Simulation, Interferometry, Manufactured Materials, Microwaves, Models, Theoretical, Scattering, Radiation
Citation
Published Version (Please cite this version)