Stable biexcitonic lasing of CuCl quantum dots under two-photon resonant excitation

G. Oohata, Y. Kagotani, K. Miyajima, M. Ashida, S. Saito, K. Edamatsu, T. Itoh

Research output: Contribution to journalConference articlepeer-review

16 Citations (Scopus)


We have observed ultraviolet lasing of CuCl quantum dots embedded in a NaCl single crystalline matrix. Stable ultraviolet lasing of biexciton (two e-h pairs) luminescence has been achieved below 70 K under the two-photon direct excitation of biexcitons of CuCl quantum dots. Laser action occurs with parallely cleaved surfaces of the NaCl crystalline matrix acting as an optical cavity, which shows a very high efficiency of lasing.

Original languageEnglish
Pages (from-to)347-350
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1-4
Publication statusPublished - 2005 Feb
EventInternational Conference on Quantum Dots - Banff, Alberta, Canada
Duration: 2004 May 102004 May 13


  • CuCl
  • Quantum dot laser
  • Two-photon absorption

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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