In(Ga)As/GaAs quantum dots for optoelectronic devices

K. Sears, S. Mokkapati, M. Buda, H. H. Tan, C. Jagadish

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

2 Citations (Scopus)


This paper discusses the self-assembled growth of In(Ga)As/GaAs quantum dots by metal-organic chemical vapor deposition and their application to diode lasers and integrated opto-electronic devices. After an extensive study of the growth parameters high densities (3-4×1010cm-2) of defect free quantum dots have been achieved and ground state lasing demonstrated for diode lasers with 5 stacked layers of quantum dots in the active region. This presentation will review the important growth parameters and the lasing characteristics of quantum dot lasers. Results for selective area epitaxy of quantum dots using SiO2 patterning will also be presented. Selective area epitaxy has been used to form quantum dots with different wavelength/bandgap in different regions of a GaAs substrate and has led to the integration of a quantum dot laser and waveguide.

Original languageEnglish
Title of host publicationMicro- and Nanotechnology
Subtitle of host publicationMaterials, Processes, Packaging, and Systems III
Publication statusPublished - 1 May 2007
Externally publishedYes
EventMicro- and Nanotechnology: Materials, Processes, Packaging, and Systems III - Adelaide, Australia
Duration: 11 Dec 200613 Dec 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceMicro- and Nanotechnology: Materials, Processes, Packaging, and Systems III


  • In(Ga)As
  • Photonic integrated circuits
  • QD diode lasers
  • Quantum dots
  • Selective area epitaxy

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