Efficient Terahertz Emission from InAs Nanowires

Abstract

We observe intense pulses of far-infrared electromagnetic radiation emitted from arrays of InAs nanowires. The terahertz radiation power efficiency of these structures is 15 times higher than a planar InAs substrate. This is explained by the preferential orientation of coherent plasma motion to the wire surface, which overcomes radiation trapping by total-internal reflection.We present evidence that this radiation originates from a low-energy acoustic surface plasmon mode of the nanowire. This is supported by independent measurements of electronic transport on individual nanowires, ultrafast terahertz spectroscopy, and theoretical analysis. Our combined experiments and analysis further indicate that these plasmon modes are specific to high aspect ratio geometries.

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Document Details

Document Type
Technical Report
Publication Date
Sep 16, 2011
Accession Number
ADA560028

Entities

People

  • A. A. Talin
  • Aaron Katzenmeyer
  • Denis V. Seletskiy
  • François Léonard
  • Jeffrey G. Cederberg
  • Mansoor Sheik-bahae
  • Maria E. Toimil-molares
  • Michael P. Hasselbeck

Organizations

  • University of New Mexico

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Charge Carriers
  • Crystal Lattice Vibrations
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Emission
  • Energy Bands
  • Field Effect Transistors
  • Materials
  • Nanotechnology
  • Nanowires
  • Polaritons
  • Scattering
  • Semiconductors
  • Spectra
  • Spectroscopy
  • Surface Plasmons
  • Terahertz Radiation

Fields of Study

  • Physics

Readers

  • Nanoscale Plasmonic Nanotechnology
  • Optical Physics and Photonics.
  • Solar Physics

Technology Areas

  • Microelectronics