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A nano-surfacing process (NSP) is proposed to directly fabricate three-dimensional (3D) concavo–convex-shaped microstructures such as micro-lens arrays using two-photon polymerization (TPP), a promising technique for fabricating arbitrary 3D highly functional micro-devices. In TPP, commonly utilized methods for fabricating complex 3D microstructures to date are based on a layer-by-layer accumulating...
Spontaneous and piezoelectric polarization effects on the linewidth enhancement factor αe of (0001)-oriented wurtzite (WZ) GaN/AlGaN quantum-well (QW) lasers are investigated using a many-body self-consistent (MB-SC) model. The results are compared with those of a many-body flat-band (MB-FB) model and a free-carrier flat-band (FC-FB) model ignoring spontaneous and piezoelectric polarization. The MB-FB...
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