Photonic band-edge micro lasers with quantum dot gain

Masahiro Nomura, Satoshi Iwamoto, Aniwat Tandaechanurat, Yasutomo Ota, Naoto Kumagai, Yasuhiko Arakawa

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


We demonstrate optically pumped continuous-wave photonic band-edge microlasers on a two-dimensional photonic crystal slab. Lasing was observed at a photonic band-edge, where the group velocity was significantly small near the K point of the band structure having a triangular lattice. Lasing was achieved by using a quantum dot gain material, which resulted in a significant decrease in the laser threshold, compared with photonic band-edge lasers using quantum well gain material. Extremely low laser thresholds of ∼80 nW at 6 K was achieved. Lasing was observed in a defect-free photonic crystal as small as ∼7 m square.

Original languageEnglish
Pages (from-to)640-648
Number of pages9
JournalOptics Express
Issue number2
Publication statusPublished - 2009 Jan 19
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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