Effect of an AlAs/GaAs mirror on the spontaneous emission of an InGaAs‐GaAs quantum well
作者:
T. J. Rogers,
D. G. Deppe,
B. G. Streetman,
期刊:
Applied Physics Letters
(AIP Available online 1990)
卷期:
Volume 57,
issue 18
页码: 1858-1860
ISSN:0003-6951
年代: 1990
DOI:10.1063/1.104120
出版商: AIP
数据来源: AIP
摘要:
Data are presented demonstrating a strong influence of a closely spaced AlAs/GaAs distributed Bragg reflector on the spontaneous emission characteristics of an InGaAs‐GaAs quantum well. The mirror to quantum well spacings on different crystal samples correspond to optical path lengths of either 1/4, 1/2, or 3/4 of the emission wavelength. The samples are characterized using photoluminescence, electroluminescence, and reflectivity measurements. Spontaneous emission is found to be greatly enhanced for a 1/2 wavelength spacing, while 1/4 and 3/4 spacings suppress the spontaneous emission by a factor of ≳1000.
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