Optical properties of red emitting self-assembled InP/(Al0.20Ga0.80)0.51In0.49P quantum dot based micropillars.
Using focused ion beam etching techniques, micropillar cavities were fabricated from a high reflective AlAs/AlGaAs distributed Bragg reflector planar cavity containing self-assembled InP quantum dots in (Al(0.20)Ga(0.80))(0.51)In(0.49)P barrier layers. The mode spectra of pillars with different diameters were investigated using micro-photoluminescence, showing excellent agreement with theory. Quality factors of the pillar cavities up to 3650 were observed. Furthermore, for a microcavity pillar with 1.26 mum diameter, single-photon emission is demonstrated by performing photon correlation measurements under pulsed excitation.
Schulz
Wolfgang-Michael
WM
Institut für Halbleiteroptik und Funktionelle Grenzflächen, Universität Stuttgart, Allmandring 3, D-70569 Stuttgart, Germany.
Thomay
Tim
T
Eichfelder
Marcus
M
Bommer
Moritz
M
Wiesner
Michael
M
Rossbach
Robert
R
Jetter
Michael
M
Bratschitsch
Rudolf
R
Leitenstorfer
Alfred
A
Michler
Peter
P