Free-carrier effect on index change in 1.3 μm quantum-dot lasers

  • S. P. Hegarty
  • , B. Corbett
  • , J. G. McInerney
  • , G. Huyet

Research output: Contribution to journalArticlepeer-review

Abstract

Below threshold measurements of the carrier induced refractive index change in 1.3 μm quantum-dot lasers at resonance and also below bandgap were carried out. It is demonstrated that free-carrier absorption contributes approximately half the total index change, and that its relative contribution is a function of device length. This result gives a lower bound to phase-amplitude coupling in quantum-dot lasers.

Original languageEnglish
Pages (from-to)416-418
Number of pages3
JournalElectronics Letters
Volume41
Issue number7
DOIs
Publication statusPublished - 31 Mar 2005

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