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Figure 1 | Nanoscale Research Letters

Figure 1

From: Top-Hat HELLISH-VCSOA for optical amplification and wavelength conversion for 0.85 to 1.3μm operation

Figure 1

Three-dimensional model for a standard HELLISH device. Schematic diagram to illustrate the quasi-flat band region (dotted lines) on the conduction and valence bands. Arrows depict the drifting and diffusion of the holes (white arrow) and electrons (black arrow). The non-filled arrow shows where the radiative recombination takes place, and the emitted photo energy is hν 1 .

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