Small-signal analysis of 1.3-mum microcavity light-emitting diodes

The modulation speed of 1.3-mum microcavity light-emitting diodes (MCLEDs) has been measured using a small-signal modulation analysis. A speed of 260 MHz using a 25-mum diameter sample at current density of 10 kA/cm(2) has been achieved. The carrier confinement has been calculated for several carrie...

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Bibliographic Details
Published in:IEEE photonics technology letters 1999-11, Vol.11 (11), p.1342-1344
Main Authors: Landais, P, Roycroft, B, Shaw, A, Depreter, B, Moerman, I, Hegarty, J
Format: Article
Language:English
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Summary:The modulation speed of 1.3-mum microcavity light-emitting diodes (MCLEDs) has been measured using a small-signal modulation analysis. A speed of 260 MHz using a 25-mum diameter sample at current density of 10 kA/cm(2) has been achieved. The carrier confinement has been calculated for several carrier densities in order to investigate the origin of the speed limitation. By comparing the performance of the 1.3-mum MCLEDs with that of the 990-nm devices we conclude that the limiting factor on the speed seems to be a lack of carrier confinement in the quantum wells and not a cavity effect
ISSN:1041-1135
DOI:10.1109/68.803039