Size-dependent optical nonlinearities in GaN quantum dots

Philippe Riblet, Satoru Tanaka, Peter Ramvall, Shintaro Nomura, Yoshinobu Aoyagi

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We studied experimentally the influence of the size of GaN quantum dots on the exciton photoluminescence at 10 K under high optical excitation for which the spatial confinement was found to be a critical parameter for optical nonlinearities such as band-gap renormalization (BGR) and state-filling effects. As the dot size decreases, the BGR characteristic of bulk like dots becomes dominated by the state-filling nonlinearity. In addition, three-dimensional confinement is demonstrated by a comparison with a quantum well.

Original languageEnglish
Pages (from-to)377-381
Number of pages5
JournalSolid State Communications
Issue number6
Publication statusPublished - Jan 15 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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