Fabrication and characterization of spherical micro semiconductor crystals by laser ablation method

Tetsuya Shimogaki, Kota Okazaki, Kota Yamasaki, Koshi Fusazaki, Yasuaki Mizokami, Norihiro Tetsuyama, Mitsuhiro Higashihata, Hiroshi Ikenoue, Daisuke Nakamura, Tatsuo Okada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We have been establishing the technique of fabricating spherical semiconductor microcrystals with suitable diameters for whispering gallery mode (WGM) lasing. Concretely, semiconductor microspheres were synthesized by ablating various semiconductor-sintered targets with focused pulsed laser at high fluences. In this report, dependences of fabricated zinc oxide (ZnO) microstructures on laser wavelengths were investigated. Lasing characteristics and photoluminescence of ZnO microspheres were determined, and photoluminescence of Sb-doped ZnO microspheres were determined. Additionally, it was also found that Sb-doped ZnO and aluminum nitride microspheres can be similarly synthesized. By developing this method, which does not require complex processing, it is expected that efforts in the application of WGM lasing are accelerated in many kinds of semiconductors.

Original languageEnglish
Pages (from-to)269-273
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume117
Issue number1
DOIs
Publication statusPublished - Jun 1 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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