The significance of carrier leakage for stable lasing in split-well direct phonon terahertz quantum cascade lasers

Nathalie Lander Gower, Silvia Piperno, Asaf Albo

Research output: Contribution to journalLetterpeer-review

Abstract

We studied the temperature performance of split-well direct phonon terahertz quantum cascade lasers and found that it is limited by a lasing instability that becomes significant as the temperature increases. When the hot electrons of the upper laser level cannot scatter effectively to excited states due to the high radiative barriers of the structures, a lasing instability occurs, which limits the temperature performance.

Original languageEnglish
Article number59
JournalPhotonics
Volume7
Issue number3
DOIs
StatePublished - Sep 2020

Keywords

  • Carrier leakage
  • Lasing instability
  • THz-QCLs

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Radiology Nuclear Medicine and imaging

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