Demonstration of a low threshold current in 1.54 μm InAs/InP(311)B quantum dot laser with reduced quantum dot stacks

  • Estelle Homeyer
  • , Rozenn Piron
  • , Frédéric Grillot
  • , Olivier Dehaese
  • , Karine Tavernier
  • , Erwan Macé
  • , Jacky Even
  • , Alain Le Corre
  • , Slimane Loualiche

Research output: Contribution to journalArticlepeer-review

Abstract

This article reports the improvement of broad area lasers epitaxially grown on InP(311)B substrate. Thanks to optimized growth techniques, a high density of uniformly sized InAs quantum dots (QDs) up to 1011 cm-2 is obtained. The device, which contains only two stacks of QDs, exhibits a ground state laser emission at 1.54 μm at room temperature associated with a threshold current density as low as 1.70 A/cm2. Experimental results also demonstrate a modal gain greater than 8 cm-1 per QD plane.

Original languageEnglish
Pages (from-to)6903-6905
Number of pages3
JournalJapanese Journal of Applied Physics
Volume46
Issue number10 A
DOIs
Publication statusPublished - 9 Oct 2007

Keywords

  • InP substrate
  • Quantum dots
  • Semiconductor laser

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