Spoof plasmon waveguide enabled ultrathin room temperature THz GaN quantum cascade laser: A feasibility study

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

23 Citations (Scopus)

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. 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. © 2013 Optical Society of America.
Original languageEnglish
Pages (from-to)28054-28061
Number of pages8
JournalOptics Express
Volume21
Issue number23
DOIs
Publication statusPublished - 18 Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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