Gigahertz modulation of tunneling-based GaAs light emitters


We demonstrate GaAs surface-emitting light-emitting diodes (LED's) containing a resonant tunneling structure that combine ultrahigh modulation bandwidths in excess of 2 GHz with high-external efficiency. In contrast to previously demonstrated resonant tunneling LED's that were used for quantum-well (QW) emission at cryogenic temperatures, these devices… (More)

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