Open AccessRoom temperature continuous-wave lasing in photonic crystal nanocavity
Author(s) -
Masahiro Nomura,
Satoshi Iwamoto,
Katsuyuki Watanabe,
Naoto Kumagai,
Yoshihiro Nakata,
Shintaro Ishida,
Yasuhiko Arakawa
Publication year - 2006
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.14.006308
Subject(s) - lasing threshold , photonic crystal , materials science , spontaneous emission , quantum dot , optoelectronics , optics , laser , continuous wave , q factor , photonics , semiconductor laser theory , physics , resonator , semiconductor , wavelength
We demonstrate room temperature continuous-wave laser operation at 1.3 mum in a photonic crystal nanocavity with InAs/GaAs self-assembled quantum dots by optical pumping. By analyzing a coupled rate equation and the experimental light-light characteristic plot, we evaluate the spontaneous emission coupling factor of the laser to be ~ 0.22. Three-dimensional carrier confinement and a low transparent carrier density due to volume effect in a quantum dot system play important roles in the cw laser operation at room temperature as well as a high quality factor photonic crystal nanocavity.