Plasmonics and metamaterials at terahertz frequencies

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Date
2014Author
Version
Acceso abierto / Sarbide irekia
Type
Tesis doctoral / Doktoretza tesia
Impact
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nodoi-noplumx
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Abstract
The research presented in this manuscript falls under the framework of metamaterials
and plasmonics. It is mainly focused on applications at terahertz (THz) frequencies, a
spectral band located between microwaves and infrared.
Metamaterials are advanced materials able to synthesize electromagnetic properties
hardly found in natural materials by means of engineering their meta-atoms. Metallic
...
[++]
The research presented in this manuscript falls under the framework of metamaterials
and plasmonics. It is mainly focused on applications at terahertz (THz) frequencies, a
spectral band located between microwaves and infrared.
Metamaterials are advanced materials able to synthesize electromagnetic properties
hardly found in natural materials by means of engineering their meta-atoms. Metallic
inclusions are commonly used in metamaterials design. At low frequency bands such
as microwaves and millimeter-waves, metals behave fundamentally differently than at
infrared and optics. Plasmonics sets the theory of the interaction processes between
electromagnetic radiation and conduction electrons of metals at such high frequencies.
The objective of this thesis is to devise, design, analyze and, whenever possible,
experimentally realize and measure new metamaterials and plasmonics devices for
free-space quasi-optical applications. Particularly, field concentrators in the form of
advanced lenses and nanoantennas as well as advanced polarizing devices are targeted.
The contributions presented here start from the specific theory of the field and the results are supported by numerical simulations, analytical calculations and/or
measurements of real prototypes. [--]
Subject
Plasmonics,
Metamaterials,
Terahertz frequencies
Departament
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila