Optical characterization of ZnO microsphere produced by laser ablation in air

Daisuke Nakamura, Norihiro Tetsuyama, Tetsuya Shimogaki, Yuta Sato, Yasuaki Mizokami, Mitsuhiro Higashihata, Tatsuo Okada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We have succeeded in growing the ZnO microspheres by a simple laser ablation in the air, and we have obtained UV whispering-gallery-mode (WGM) lasing from the sphere under pulsed laser excitation. In this study, we observed resonances of WGM in visible region under cw laser pumping. In addition, possible refractive index of the ZnO microsphere was estimated from the WGM peaks. Furthermore, we obtained room-temperature electroluminescence from the ZnO microsphere/p-GaN heterojunction under forward bias.

Original languageEnglish
Pages (from-to)162-165
Number of pages4
JournalJournal of Laser Micro Nanoengineering
Volume10
Issue number2
DOIs
Publication statusPublished - 2015

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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