Metamaterial Resonant Absorbers for Terahertz Sensing

Abstract

The aim of this work is to develop a metamaterial absorber that can be incorporated into a terahertz (THz) imaging system with a 4.7 THz quantum cascade laser (QCL) illumination source. Finite element (FE) simulations were utilized to design metamaterials, and a Fourier transform infrared spectrometer (FTIR) was employed to characterize the absorption spectrum of each metamaterial configuration. Process parameters for future work with the microfabrication devices have been established for the Naval Postgraduate School clean room. Analysis of experimental data provided insight in determining the refractive index of the metamaterial dielectric, SiOx, from 38 THz and confirmed the Lorentzian shape for the absorption spectrum as theoretically proposed by another group. Future work will incorporate the metamaterial absorber design of this research into a more efficient, cost effective, bi-material THz sensor that can be employed in a variety of naval applications.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2015
Accession Number
AD1009293

Entities

People

  • Eric A. Stinson

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Diffraction
  • Electromagnetic Spectra
  • Experimental Data
  • Fabrication
  • Materials
  • Materials Science
  • Measurement
  • Metamaterial Absorbers
  • Optical Properties
  • Quantum Cascade Lasers
  • Resonant Frequency
  • Simulations
  • Spectra
  • Terahertz Radiation
  • Tunable Metamaterials

Fields of Study

  • Materials science

Readers

  • Nanofabrication and Microfabrication.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Microelectronics
  • Microelectronics - Microelectromechanical Systems
  • Quantum Computing