Ultraviolet lasing characteristics of ZnS microbelt lasers

H. Zhu, S. C. Su, Siu Fung Yu, W. F. Zhang, C. C. Ling, H. Y. Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Investigation on the room-temperature ultraviolet lasing characteristics of a single ZnS microbelt laser is presented. Lasing emission with peak wavelength at round 335 nm is observed from the hexagonal-wurtzite phase of ZnS microbelt under optical excitation. This is due to the Fabry-Perot resonance along the length of the microbelt. By studying the low-temperature and time-resolved photoluminescence, it is verified that the corresponding lasing characteristics are attributed to the excitonic optical gain process. Furthermore, the rectangular cross-sectional nanostructure of ZnS microbelt suppresses TM polarization for excitation power lower than ∼1.4 times the threshold. Hence, ZnS microbelts can be a promising building block to realize ultraviolet semiconductor lasers with control of laser polarization.
Original languageEnglish
Article number6449279
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume19
Issue number4
DOIs
Publication statusPublished - 22 May 2013

Keywords

  • Microcavities
  • semiconductor lasers
  • ZnS

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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