Title :
Role of Re-absorption Effect to Quality Factor in Quantum-Dot Photonic-Crystal Nanocavities
Author :
Ara, Taw ; Kamada, H. ; Zhang, Y.H. ; Tanabe, T. ; Cade, N.I. ; Gotoh, H. ; Ding, D. ; Johnson, R. ; Kuramochi, E. ; Notomi, M. ; Nakano, H.
Author_Institution :
NTT Corp., Atsugi
Abstract :
We have systematically evaluated quality (Q) factor in quantum-dot (QD) photonic-crystal nanocavities. The measured Q factor was very sensitive to the detuning energy of the cavity mode to QD inhomogeneous broadening due to the re-absorption effect of the uncoupled QDs within the nanocavity. We achieved a high Q factor of over 10,000 and an ultra-low threshold lasing by the detuning of the cavity mode and the suppression of this effect.
Keywords :
Q-factor; microcavities; photonic crystals; quantum dots; quality factor; quantum-dot photonic-crystal nanocavity; reabsorption effect; Conference proceedings; Excitons; Gallium arsenide; Indium phosphide; Laboratories; Optical scattering; Power engineering and energy; Q factor; Quantum dots; Solid state circuits;
Conference_Titel :
Indium Phosphide & Related Materials, 2007. IPRM '07. IEEE 19th International Conference on
Conference_Location :
Matsue
Print_ISBN :
1-4244-0875-X
Electronic_ISBN :
1092-8669
DOI :
10.1109/ICIPRM.2007.381234
