Optical gain and lasing in a semiconductor embedded in a three-dimensional photonic crystal

Yu A. Vlasov, K. Luterova, I. Pelant, B. Hönerlage, V. N. Astratov

Research output: Contribution to journalArticlepeer-review

Abstract

Three-dimensional photonic crystals used in this study were synthetic opals, composed of submicron silica spheres, close-packed in a face-centered cubic structure with a period of 200 nm, which exhibit photonic stop-bands around 600 nm. We report on a substantial optical gain in CdS nanocrystals embedded inside the interstitials between the silica spheres. It is found that the optical gain is enhanced at the edges of the photonic gap due to multiple coherent Bragg scattering of light in the periodic photonic crystal. The latter provides an efficient feedback mechanism for lasing action.

Original languageEnglish (US)
Pages (from-to)650-653
Number of pages4
JournalJournal of Crystal Growth
Volume184-185
DOIs
StatePublished - 1998
Externally publishedYes

Keywords

  • II-VI semiconductors
  • Lasing
  • Optical gain
  • Photonic band gap materials
  • Quantum dots

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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