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 language | English |
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Journal | Materials Research Society Symposium Proceedings |
Volume | 1661 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Externally published | Yes |
Event | 2013 MRS Fall Meeting - Boston, MA, United States Duration: 1 Dec 2013 → 6 Dec 2013 |
Keywords
- devices
- laser
- nitride
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering