Suppression of random lasing modes in polycrystalline ZnO thin-film by using distributed Bragg reflector

Siu H. Tsang, Siu Fung Yu, Shu Ping Lau, Hui Y. Yang, Xiao Feng Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


Formation of vertical-cavity random laser by using a poly crystalline ZnO thin-film optically coupled to 11.5 pairs of Al203-ZnO multilayer distributed Bragg reflector (DBR) is proposed. Lasing characteristics of the laser observed from the surface of the polycrystalline ZnO thin film are studied without and with the presence of DBR. It is found that the corresponding spectral linewidth can be limited to about 4 nm at high excitation intensity under the influence of DBR.
Original languageEnglish
Pages (from-to)549-551
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
Publication statusPublished - 15 Apr 2009
Externally publishedYes


  • Distributed Bragg reflectors (DBRs)
  • Random laser
  • Zinc oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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