Lasing from ZnO nanorods on ITO-coated substrates

M. N. Nordin, D. Priante, M. K. Shakfa, W. Maryam

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

1 Scopus citations


Lasing was observed from ZnO nanorods prepared by a simple method of chemical bath deposition (CBD) on ITOcoated glass substrates. The X-ray diffraction pattern showed a dominant peak for (002) plane typical for good crystalline quality of ZnO grown in the z-direction with a wurtzite structure. Continuous-wave photoluminescence (PL) spectra revealed a peak centered at 380 nm corresponding to the band gap of ZnO. Under pulsed optical pumping, lasing was observed above the nominal PL peak, initially for one mode at 384 nm. Two additional modes at 386 nm and 390 nm was observed when the pumping power is further increased. Threshold was achieved at 0.7 μJ which was 10 times smaller than that reported for powder-based random lasers. In addition, gain pinning was also observed for the dominant mode and the additional two modes appeared upon onset of this gain pining behavior.

Original languageEnglish (US)
Title of host publicationSemiconductor Lasers and Laser Dynamics VIII
EditorsRainer Michalzik, Krassimir Panajotov, Marc Sciamanna
ISBN (Electronic)9781510618909
StatePublished - 2018
EventSemiconductor Lasers and Laser Dynamics VIII 2018 - Strasbourg, France
Duration: Apr 23 2018Apr 26 2018

Publication series

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


ConferenceSemiconductor Lasers and Laser Dynamics VIII 2018


  • Random lasing
  • ZnO vertical nanorods
  • chemical bath deposition
  • laser mode switching

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Applied Mathematics
  • Electrical and Electronic Engineering
  • Computer Science Applications


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