Two-photon absorption and lasing due to biexciton in CuCl quantum dots

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

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


We have demonstrated laser emission in CuCl quantum dots embedded in NaCl matrix by direct creation of biexcitons through two-photon absorption process. Mode distance and emitting direction of laser emission show that cavity is composed of cleaved surfaces of the matrix. In addition, we confirmed that the lasing originated from the biexciton state by taking account of the polarization selection rule of the lowest biexciton state. It is suggested that two-photon excitation of the biexcitons is very useful for high-efficient lasing in quantum dots.

Original languageEnglish
Pages (from-to)113-116
Number of pages4
JournalJournal of Luminescence
Issue number1
Publication statusPublished - 2005 Apr


  • Lasing from biexcitons
  • Quantum dots laser
  • Two-photon absorption

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


Dive into the research topics of 'Two-photon absorption and lasing due to biexciton in CuCl quantum dots'. Together they form a unique fingerprint.

Cite this