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The fabrication of 3.9-4.2μm mid-infrared surface emitting PbSe quantum dot lasers is reported. The self-assembled PbSe quantum dots are produced molecular beam epitaxy of PbSe on 5.4% lattice-mismatched PbEuTe barrier layers. The whole laser structure, grown on (111) oriented BaF 2 substrates, consists of two high reflectivity epitaxial EuTe/PbEuTe Bragg mirrors and a self-organized PbSe/Pb...
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