期刊
APPLIED PHYSICS LETTERS
卷 109, 期 20, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4967833
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资金
- German Research Council (DFG) [CRC 787, GRK 1558]
Submonolayer quantum dots promise to combine the beneficial features of zero-and two-dimensional carrier confinement. To explore their potential with respect to all-optical signal processing, we investigate the amplitude-phase coupling (a-parameter) in semiconductor optical amplifiers based on InAs/GaAs submonolayer quantum dots in ultrafast pump-probe experiments. Lateral coupling provides an efficient carrier reservoir and gives rise to a large a-parameter. Combined with a high modal gain and an ultrafast gain recovery, this makes the submonolayer quantum dots an attractive gain medium for nonlinear optical signal processing. Published by AIP Publishing.
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