Synthesis of Spherical ZnO Microcrystals by Laser Ablation in Air

Daisuke Nakamura, Toshinobu Tanaka, Tatsuya Ikebuchi, Takeshi Ueyama, Mitsuhiro Higashihata, Tatsuo Okada

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We have succeeded in synthesizing the zinc oxide (ZnO) microspheres by laser ablation of a ZnO sintered target in air, and have demonstrated ultraviolet whispering-gallery-mode lasting from the sphere under ultraviolet pulsed laser excitation. In this study, we investigated the dependence of the laser fluence and the spot size on the growth of the ZnO microspheres. Large sizes of more than 30 μm microspheres were synthesized with increasing the laser fluence up to 440 J/cm2. Although undesired nanoparticles and fragments were also generated at high fluence and large ablation spot size, selective collection of the microspheres can be expected because of different emitting distributions of the microspheres and other fragments.

Original languageEnglish
Pages (from-to)58-63
Number of pages6
JournalElectronics and Communications in Japan
Issue number10
Publication statusPublished - Oct 1 2016

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Physics and Astronomy(all)
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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