Time resolved measurements on low-density single quantum dots at 1300nm

Details Time resolved measurements on low-density single quantum dots at 1300nm Time resolved measurements on low-density single quantum dots at 1300nm

2006-04-28

arxiv.org/abs/cond-mat/0604661v2

Physics

Condensed Matter

Other Condensed Matter

Proceeding - 4th International Conference on Quantum Dots - will be published in Physica Status Solidi (c)

Scientific paper

We present time integrated and time resolved measurements on single In/As quantum dots (QD) emitting at 1300nm, at 10K, embedded in a planar microcavity. We clearly identify a standard spectroscopic signature from single QDs and compare the exciton line width and biexciton (BX) binding energy for several QDs. We present this data for QDs spatially selected by etched mesas and metallic apertures. Time resolved photoluminescence (PL) from single electron-hole recombination in the ground state of the QD is investigated as a function of excitation power and temperature. The measurements reveal the presence of a background emission that delays the PL of excitons in the ground state.

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