Effect of detuning on the angular emission pattern of high-efficiency microcavity light-emitting diodes
作者:
C. Dill,
R. P. Stanley,
U. Oesterle,
D. Ochoa,
M. Ilegems,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 26
页码: 3812-3814
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.122902
出版商: AIP
数据来源: AIP
摘要:
Results on molecular beam epitaxy-grown microcavity light-emitting diodes with InGaAs/GaAs quantum wells and a hybrid top mirror are presented. An external quantum efficiency of 14.8&percent; is achieved for a 400 &mgr;m diam light-emitting diode. The strong influence of the spectral overlap between the spontaneous emission spectrum and the cavity resonance mode on the radiation pattern is shown. The angular emission profile is compared with model predictions for different detunings, and a very good agreement is obtained when the asymmetric spectral broadening of the intrinsic spontaneous emission is taken into account. ©1998 American Institute of Physics.
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