Optically Pumped Far-Infrared Lasers Based on Photonic Band Gap Crystals

Abstract

The primary focus of this effort was to demonstrate an ultrasmall optically pumped far infrared (OPFIR) laser based on a photonic band gap (PBG) crystal cavity. Conventional cylindrical copper waveguide ultrasmall OPFIR lasers were constructed and their performance properties were measured as a function of pump power, gas pressure, and cavity length. Pure and doped two dimensional PBG crystals were constructed, and their transmissivity was measured as a function of wavelength, incidence angle, crystal size, and doping configuration. A high resolution THz spectrometer based on a low temperature-grown GaAs photomixer and a mode-locked Ti:Sapphire laser was constructed and molecular spectra were measured. The amplitude and phase noise properties of the Ar(+) laser-pumped Ti:Sapphire were measured as a function of harmonic number using this photomixer. Finally, the photoluminescence of type-II GaAs/AlAs single quantum wells was measured as a function of well width, pump power, and temperature.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1998
Accession Number
ADA358035

Entities

People

  • Henry O. Everitt

Organizations

  • Duke University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Band Gaps
  • Energy Bands
  • Far Infrared Lasers
  • High Resolution
  • Infrared Lasers
  • Intensity
  • Laser Resonators
  • Lasers
  • Low Temperature
  • Micro-Machines
  • Military Research
  • Photoluminescence
  • Photonic Crystals
  • Quantum Wells
  • Radiation
  • Terahertz Radiation
  • Two Dimensional

Fields of Study

  • Materials science
  • Physics

Readers

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

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Quantum Computing