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Figure 1 | Nanoscale Research Letters

Figure 1

From: Quantum dot cascade laser

Figure 1

Active region structure, AFM image, and XRD curves. (a) Self-assembled InAs QDs grown by two-step strain compensation mechanics. (b) AFM image of coupled InAs QDs (dashed rectangle in FigureĀ 1a on top of one period InGaAs/GaAs/InAs/InAlAs QDCL active region). (c) Experimental and simulated X-ray diffraction rocking curve for a 30-stage QDCL structure.

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