ROS Theses Repository

View Item 
  •   ROS Home
  • Engineering & Physical Sciences
  • Doctoral Theses (Engineering & Physical Sciences)
  • View Item
  •   ROS Home
  • Engineering & Physical Sciences
  • Doctoral Theses (Engineering & Physical Sciences)
  • View Item
  •   ROS Home
  • Engineering & Physical Sciences
  • Doctoral Theses (Engineering & Physical Sciences)
  • View Item
  • Admin
JavaScript is disabled for your browser. Some features of this site may not work without it.

Enhanced nonlinearities in epsilon-near-zero transparent conductive oxides for applications in nanophotonics

View/Open
CarnemollaEG_0319_eps.pdf (8.695Mb)
Date
2019-03
Author
Carnemolla, Enrico Giuseppe
Metadata
Show full item record
Abstract
Plasmonic brings the promise to overcome both the speed limitation of electronics and the scalability issue of photonics, however it is affected by fundamental issues such as large ohmic losses, lack of tunability and CMOS compatibility. All these problems prevent a widespread of plasmonic technologies. My research focuses on developing a new class of plasmonic devices based on Transparent Conductive Oxides (TCOs). Because of their low losses in the NIR, their fabrication flexibility, and exceptional optical nonlinearities, TCOs could drastically mitigate all the previously listed limitations. Great part of the thesis deals with the characterization of Aluminium Zinc Oxide (AZO) and Gallium Zinc Oxide (GZO) in the linear and nonlinear regime within the ENZ spectral region, by using various alterations of a standard pump and probe set-up. My work shows how large and ultra-fast nonlinearities, triggered by both interband and intraband excitations, are combined to produce independent and algebraically summable nonlinear effects in TCOs and how degenerate optical excitation can lead to an unprecedented enhancement of the nonlinear Kerr effect. In the direction of low power frequency conversion, experiments of semi-degenerate four-wave mixing have also been performed. Finally, ultra-fast tunable nanocavities based on a Gallium Zinc Oxide (GZO) are also reported.
URI
http://hdl.handle.net/10399/4234
Collections
  • Doctoral Theses (Engineering & Physical Sciences)

Browse

All of ROSCommunities & CollectionsBy Issue DateAuthorsTitlesThis CollectionBy Issue DateAuthorsTitles

ROS Administrator

LoginRegister
©Heriot-Watt University, Edinburgh, Scotland, UK EH14 4AS.

Maintained by the Library
Tel: +44 (0)131 451 3577
Library Email: libhelp@hw.ac.uk
ROS Email: open.access@hw.ac.uk

Scottish registered charity number: SC000278

  • About
  • Copyright
  • Accessibility
  • Policies
  • Privacy & Cookies
  • Feedback
AboutCopyright
AccessibilityPolicies
Privacy & Cookies
Feedback
 
©Heriot-Watt University, Edinburgh, Scotland, UK EH14 4AS.

Maintained by the Library
Tel: +44 (0)131 451 3577
Library Email: libhelp@hw.ac.uk
ROS Email: open.access@hw.ac.uk

Scottish registered charity number: SC000278

  • About
  • Copyright
  • Accessibility
  • Policies
  • Privacy & Cookies
  • Feedback
AboutCopyright
AccessibilityPolicies
Privacy & Cookies
Feedback