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This study demonstrates the use of electronically coupled patterned quantum dots (QDs) fabricated using a wet-etching technique as the gain medium of a photonic device. This technique provides the unique ability to control both the spatial and spectral properties of QDs, while maintaining the high optical quality of the material necessary for photonics applications.
The self-assembly method of forming QDs, although well established as a reliable growth technique, does not allow explicit control over the size and position of each QD. The large size variation of these QDs typically results in significant inhomogeneous broadening, diminishing the potential advantages of their use in optoelectronic devices such as low threshold current density, narrow gain bandwidth,...
We have demonstrated the fabrication of uniform arrays of quantum dots by metal organic chemical vapor deposition using electron beam lithography and selective area epitaxy techniques. Photoluminescence data showing emission at 1250 nm is presented.
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