Electronic quantum confinement in cylindrical potential well

Selective manipulation of InAs quantum dot electronic states using a lateral potential confinement layer

To further the objective of controlled manipulation of the electronic states in epitaxial island quantum dots ~QDs!, we introduce the notion of a lateral potential confinement layer ~LPCL! whose judicious placement during island capping allows selective impact on ground and excited electron and hole states. The energy states of InAs/In0.15Ga0.85As QDs are manipulated using 10-monolayer-thick In...

Packing and Assembling Spheres in Cylindrical Confinement

low-confinement SOAs using quantum well intermixing and MOCVD regrowth

Photonic receivers integrating unitravelling carrier (UTC) photodiodes with high saturation power=high gain semiconductor optical amplifiers (SOAs) are presented. The SOAs demonstrated up to 28 dB of gain with saturation output powers of up to 18.6 dBm, while the UTC photodiodes were capable of 40 Gbit=s operation under high photocurrent operation. The chip-coupled receiver sensitivity was bett...

A periodic index separate confinement heterostructure quantum well laser

Articles you may be interested in Periodic index separate confinement heterostructure InGaAs/AlGaAs quantum well lasers grown by temperature modulation molecular beam epitaxy Appl. Temperature modulation molecularbeam epitaxy and its application to the growth of periodic index separate confinement heterostructure InGaAs quantumwell lasers Periodic index separate confinement heterostructure InGa...

Quantum confinement and electronic properties of tapered silicon nanowires.

Using ab initio calculations, structural tapering of silicon nanowires is shown to have a profound effect on their electronic properties. In particular, the electronic structure of small-diameter tapered silicon nanowires is found to have a strong axial dependence, with unoccupied eigenstates being substantially more sensitive to diameter. Moreover, the states corresponding to the highest occup...