Growth of high quality InGaAsN heterostructures and their laser application

A. Yu Egorov, D. Bernklau, B. Borchert, S. Illek, D. Livshits, A. Rucki, M. Schuster, A. Kaschner, A. Hoffmann, Gh Dumitras, M. C. Amann, H. Riechert

Research output: Contribution to journalConference articlepeer-review

74 Scopus citations

Abstract

Focus of this work is the optimization of growth to achieve high quality laser material for emission at 1.3 μm and beyond. GaAs/GaAsN/InGaAsN heterostructures were grown by solid source molecular beam epitaxy. To achieve optimum crystal quality of InGaAsN heterostructures, growth was followed by a high temperature treatment at about 700°C. The high optical quality of our annealed material is attested by large exciton recombination lifetimes (more than 2 ns). Consequently, a decrease of single quantum well transparency current density down to 100 A/cm2 is found and SWQ lasers with threshold current densities as low as 350 A/cm2 have been made. This represents clearly the lowest laser thresholds reported so far for emission around 1.3 μm from the InGaAsN material system.

Original languageEnglish
Pages (from-to)545-552
Number of pages8
JournalJournal of Crystal Growth
Volume227-228
DOIs
StatePublished - Jul 2001
Event11th International Conference on Molecular Beam Epitaxy - Bijing, China
Duration: 11 Sep 200015 Sep 2000

Keywords

  • B1. Nitrides
  • B2. Semiconducting gallium arsenide
  • B3. Laser diodes

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