DocumentCode :
2940711
Title :
Far field radiation pattern from quantum boxes located in micropillars
Author :
Rigneault, Herve ; Broudic, J. ; Gayral, B. ; Gerard, J.M.
Author_Institution :
Inst. Fresnel, Domaine Univ. de St Jerome, Marseille, France
fYear :
2000
fDate :
10-15 Sept. 2000
Abstract :
Summary form only given. Due to a lower mode volume, 3D structures lead to higher radiative lifetime reduction and a measured Purcell factor of 5 has been reported recently for quantum boxes located in micropillar cavities. Since this type of structure is etched from a planar microcavity it is interesting to study the emission directivity for different pillar diameters. We observe a broadening of the angular emission (/spl lambda/=932 nm) when the pillar diameter decreases. Other investigations concerning the angular behaviour for the various discrete modes show that the angular radiation pattern is strongly wavelength dependent and results both from planar microcavity effects and mode diffraction.
Keywords :
radiative lifetimes; semiconductor quantum dots; spontaneous emission; 3D structures; 932 nm; Purcell factor; angular emission broadening; angular radiation pattern; discrete modes; emission directivity; far field radiation pattern; lower mode volume; micropillar cavities; mode diffraction; pillar diameter; planar microcavity; quantum boxes; radiative lifetime reduction; spontaneous emission; wavelength dependent; Delay effects; Interference; Mirrors; Solids;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Quantum Electronics Conference, 2000. Conference Digest. 2000 International
Conference_Location :
Nice, France
Print_ISBN :
0-7803-6318-3
Type :
conf
DOI :
10.1109/IQEC.2000.908088
Filename :
908088
Link To Document :
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