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

3 Citations (Scopus)


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
Issue number4
Publication statusPublished - 22 May 2013


  • Microcavities
  • semiconductor lasers
  • ZnS

ASJC Scopus subject areas

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


Dive into the research topics of 'Ultraviolet lasing characteristics of ZnS microbelt lasers'. Together they form a unique fingerprint.

Cite this