Micro-cavity lasing of optically excited CdS thin films at room temperature

D. M. Bagnall*, B. Ullrich, H. Sakai, Y. Segawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Cadmium sulfide thin films, grown by pulsed laser deposition (PLD) on glass substrates, show green photoluminescence and lasing characteristics under optical excitation at room temperature. X-ray diffraction shows the polycrystalline films are of wurtzite structure and have (002) preferred orientation. Laser thresholds are around 1.8 MW cm-2 and the peak emission is at 501 nm. Fabry-Perot laser modes are spaced at 16 nm indicating cavity lengths of 2.9 μm. Results indicate that laser microcavities are consistently self-formed within the hexagonal lattice.

Original languageEnglish
Pages (from-to)1015-1018
Number of pages4
JournalJournal of Crystal Growth
Volume214-215
DOIs
Publication statusPublished - 2 Jun 2000
Externally publishedYes

Keywords

  • semiconductor
  • II–VI
  • laser
  • CdS
  • PLD
  • microcavity
  • hexagonal

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