Open AccessPhotonic band-edge micro lasers with quantum dot gain
Author(s) -
Masahiro Nomura,
Satoshi Iwamoto,
Aniwat Tandaechanurat,
Yasutomo Ota,
Naoto Kumagai,
Yasuhiko Arakawa
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.000640
Subject(s) - lasing threshold , photonic crystal , optoelectronics , laser , optics , materials science , quantum dot laser , quantum dot , semiconductor laser theory , photonics , physics
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 approximately 80 nW at 6 K was achieved. Lasing was observed in a defect-free photonic crystal as small as approximately 7 microm square.