Feasibility of spoof surface plasmon waveguide enabled ultrathin room temperature THz GaN quantum cascade laser

Greg Sun, Jacob B. Khurgin, Din Ping Tsai

Research output: Journal article publicationConference articleAcademic researchpeer-review

Abstract

We propose and study the feasibility of a THz GaN/AlGaN quantum cascade laser (QCL) consisting of only five periods with confinement provided by a spoof surface plasmon (SSP) waveguide for room temperature operation. The QCL design takes advantages of the large optical phonon energy and the ultrafast phonon scattering in GaN that allow for engineering favorable laser state lifetimes, and the SSP waveguide provides the optical confinement for the ultrathin QCL. Our analysis has shown that the waveguide loss is sufficiently low for the QCL to reach its threshold at the injection current density around 6 kA/cm 2 at room temperature.

Original languageEnglish
JournalMaterials Research Society Symposium Proceedings
Volume1661
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event2013 MRS Fall Meeting - Boston, MA, United States
Duration: 1 Dec 20136 Dec 2013

Keywords

  • devices
  • laser
  • nitride

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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