Nanoconcentration of terahertz radiation in plasmonic waveguides

Anastasia Rusina, Maxim Durach, Keith A. Nelson, Mark I. Stockman

Research output: Contribution to book or proceedingConference articlepeer-review

Abstract

Here, we establish the principal limits for the nanoconcentration of the THz radiation in metal/dielectric waveguides and determine their optimum shapes required for this nanoconcentration. We predict that the adiabatic compression of THz radiation from the initial spot size of R0 ∼ λ0 to the final size of R = 100 - 250 nm can be achieved with the THz radiation intensity increased by a factor of ×10 to ×250. This THz energy nanoconcentration will not only improve the spatial resolution and increase the signal/noise ratio for the THz imaging and spectroscopy, but in combination with the recently developed sources of powerful THz pulses will allow the observation of nonlinear THz effects and a carrying out a variety of nonlinear spectroscopies (such as two-dimensional spectroscopy), which are highly informative. This will find a wide spectrum of applications in science, engineering, biomedical research, environmental monitoring.

Original languageEnglish
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and Their Optical Properties VIII
DOIs
StatePublished - 2010
EventPlasmonics: Metallic Nanostructures and Their Optical Properties VIII - San Diego, CA, United States
Duration: Aug 1 2010Aug 5 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7757
ISSN (Print)0277-786X

Conference

ConferencePlasmonics: Metallic Nanostructures and Their Optical Properties VIII
Country/TerritoryUnited States
CitySan Diego, CA
Period08/1/1008/5/10

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Adiabatic localization
  • Coaxial waveguides
  • Metal-insulator-metal waveguides
  • Nanolocalization of electromagnetic energy in far-infrared frequency range
  • Terahertz plasmonics

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