Investigation of the ultraviolet lasing characteristics of zinc hexagonal microtubes

Siu Fung Yu, X. W. Sun, C. Yuen, Shu Ping Lau

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Prismatic zinc oxide (ZnO) hexagonal microtubes have been fabricated on silicon substrate by vapor transport. It is shown that the ZnO hexagonal microtubes have demonstrated ultraviolet (∼393 nm) lasing emission under 355 nm optical excitation. Furthermore, the lasing as well as modal characteristics of the microtube lasers are investigated theoretically. It can be explained that the high threshold pump intensity of the microtube lasers is due to high radiation loss near the prismatic facets. In addition, our calculation has shown that the output beam from the microtube lasers has a shape similar to the doughnut ring, which can find application as laser tweezers to trap low refractive index small particles.
Original languageEnglish
Title of host publicationProceedings of the IEEE/LEOS 3rd International Conference on Numerical Simulation of Semiconductor Optoelectronic Devices, NUSOD 2003
PublisherIEEE
Pages57-58
Number of pages2
Volume2003-October
ISBN (Electronic)0780379926, 9780780379923
DOIs
Publication statusPublished - 1 Jan 2003
Externally publishedYes
Event3rd IEEE/LEOS International Conference on Numerical Simulation of Semiconductor Optoelectronic Devices, NUSOD 2003 - Tokyo, Japan
Duration: 14 Oct 200316 Oct 2003

Conference

Conference3rd IEEE/LEOS International Conference on Numerical Simulation of Semiconductor Optoelectronic Devices, NUSOD 2003
Country/TerritoryJapan
CityTokyo
Period14/10/0316/10/03

Keywords

  • Laser excitation
  • Laser theory
  • Optical pumping
  • Optical refraction
  • Optical variables control
  • Pump lasers
  • Ring lasers
  • Silicon
  • Stimulated emission
  • Zinc oxide

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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