Room temperature continuous-wave lasing in photonic crystal nanocavity.
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.
Nomura
Masahiro
M
Iwamoto
Satoshi
S
Watanabe
Katsuyuki
K
Kumagai
Naoto
N
Nakata
Yoshiaki
Y
Ishida
Satomi
S
Arakawa
Yasuhiko
Y