Large intermixing in the InGaP/InAlGaP laser structure using stress engineering at elevated temperature

Mohammed A. Majid, Ahmad A. Al-Jabr, Rami T. El Afandy, Hassan M. Oubei, Dalaver H. Anjum, Mohamed Shehata, Tien K. Ng, Boon S. Ooi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


In this paper, a thermally induced dielectric strain on quantum well intermixing (QWI) technique is employed on tensilestrained InGaP/InAlGaP laser structure, to promote inter-diffusion, in conjunction with cycle annealing at elevated temperature. A bandgap blueshift as large as large as ∼250meV was observed for samples capped with a single and bilayer of the dielectric film (1μm-SiO2 and 0.1μm-Si3N4) and annealed at a high temperature (700-1000oC) for cycles of annealing steps. Samples subjected to this novel QWI technique for short duration and multiple cycle annealing steps shown a high degree of intermixing while maintaining strong photoluminescence (PL) intensity, narrow full wave at half maximum (FWHM) and good surface morphology. Laser devices fabricated using this technique, lased at a wavelength of 608nm with two facet power of ∼46mW, indicating the high quality of the material. Our results show that thermal stress can be controlled by the engineering dielectric strain opening new perspectives for QWI of photonics devices.

Original languageBritish English
Title of host publicationNovel In-Plane Semiconductor Lasers XVIII
EditorsPeter M. Smowton, Alexey A. Belyanin
ISBN (Electronic)9781510625204
StatePublished - 2019
EventNovel In-Plane Semiconductor Lasers XVIII 2019 - San Francisco, United States
Duration: 4 Feb 20197 Feb 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceNovel In-Plane Semiconductor Lasers XVIII 2019
Country/TerritoryUnited States
CitySan Francisco


  • Cycle annealing
  • Dielectric stress
  • InGaP/InAlGaP
  • Quantum well intermixing
  • Visible lasers


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