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

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

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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
Subjects:
Bandwidth
Carrier confinement
Carrier density
Confinement
Constraining
Distributed Bragg reflectors
Fabrication
Holes
Indium phosphide
Light emitting diodes
Mathematical analysis
Microcavities
Modulation
Physics
Recycling
Substrates
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Summary:The modulation speed of 1.3-μm microcavity light-emitting diodes (MCLEDs) has been measured using a small-signal modulation analysis. A speed of 260 MHz using a 25-μm 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-μm 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
1941-0174
DOI:10.1109/68.803039