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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 23 — Nov. 18, 2013
  • pp: 28054–28061

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

Greg Sun, Jacob B. Khurgin, and Din Ping Tsai  »View Author Affiliations

Optics Express, Vol. 21, Issue 23, pp. 28054-28061 (2013)

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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/cm2 at room temperature.

© 2013 Optical Society of America

OCIS Codes
(230.7370) Optical devices : Waveguides
(250.5403) Optoelectronics : Plasmonics
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Lasers and Laser Optics

Original Manuscript: September 30, 2013
Revised Manuscript: October 24, 2013
Manuscript Accepted: October 29, 2013
Published: November 7, 2013

Greg Sun, Jacob B. Khurgin, and Din Ping Tsai, "Spoof plasmon waveguide enabled ultrathin room temperature THz GaN quantum cascade laser: a feasibility study," Opt. Express 21, 28054-28061 (2013)

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