Strong amplitude-phase coupling in submonolayer quantum dots

被引：13

作者：

Herzog, Bastian ^{[1
]}

Lingnau, Benjamin ^{[2
]}

Kolarczik, Mirco ^{[1
]}

Kaptan, Yuecel ^{[1
]}

Bimberg, Dieter ^{[3
]}

Maassdorf, Andre ^{[4
]}

Pohl, Udo W. ^{[3
]}

Rosales, Ricardo ^{[3
]}

Schulze, Jan-Hindrik ^{[3
]}

Strittmatter, Andre ^{[3
]}

Weyers, Markus ^{[4
]}

Woggon, Ulrike ^{[1
]}

Luedge, Kathy ^{[2
]}

Owschimikow, Nina ^{[1
]}

机构：

[1] TU Berlin, Inst Opt & Atomare Phys, Str 17 Juni 135, D-10623 Berlin, Germany

[2] TU Berlin, Inst Theoret Phys, Hardenbergstr 36, D-10623 Berlin, Germany

[3] TU Berlin, Inst Festkorperphys, Hardenbergstr 36, D-10623 Berlin, Germany

[4] Leibniz Inst Hochstfrequenztech, Ferdinand Braun Inst, Gustav Kirchhoff Str 4, D-12489 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 20期

关键词：

LINEWIDTH ENHANCEMENT FACTOR; ULTRAFAST GAIN DYNAMICS; SEMICONDUCTOR-LASERS; OPTICAL AMPLIFIERS; REFRACTIVE-INDEX; FACTOR-ALPHA; WELL LASERS; INJECTION;

D O I：

10.1063/1.4967833

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：5

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