Analysis of surface emitting distributed-feedback quantum cascade laser based on a surface-plasmon waveguide

Guo Wanhong*, Lu Quanyong, Liu Junqi, Zhang Wei, Jiang Yuchao, Li Lu, Wang Lijun, Liu Fengqi, Wang Zhanguo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

An analysis of a surface emitting distributed-feedback quantum cascade laser (DFB QCL) based on a surface-plasmon waveguide is presented. The second-order grating realized by the sole patterning of the top metal provides strong feedback. The analysis is based on a coupled-mode theory derived from exact Floquet-Bloch solutions of the infinite periodic structure. The surface outcoupling efficiency and threshold gain for the optimized device design are 43% and 12 cm-1, respectively, which represent great improvements on the conventional dielectric waveguide based DFB QCL with typical values of 17.5% and 20 cm-1.

Original languageEnglish (US)
Pages (from-to)1140141-1140145
Number of pages5
JournalJournal of Semiconductors
Volume31
Issue number11
DOIs
StatePublished - Nov 1 2010

Keywords

  • Distributed feedback lasers
  • Quantum cascade laser
  • Surface emission
  • Surface plasmon waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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