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

G. Sun, J.B. Khurgin, Din-ping Tsai

Research output: Journal article publicationJournal articleAcademic researchpeer-review


© 2014 Materials Research Society.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/cm2 at room temperature.
Original languageEnglish
Article number184
JournalHague Journal on the Rule of Law
Issue number2
Publication statusPublished - 1 Jan 2014
Externally publishedYes


  • devices
  • laser
  • nitride

ASJC Scopus subject areas

  • Law

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