Optical intersubband transitions (ISTs) for both in-plane polarization (TE) and normalto-plane polarization (TM) in p-type Si1-xGex/Si multiple quantum wells (MQWs) are investigated using 14-band k⋅p model combined with the envelope-function Fourier expansion method. The results show that the amplitudes of different intersubband transitions for TE and TM polarizations, and the overall absorptio...

The GaAs surface passivation effects of epitaxially grown ultra-thin GaP layers and surface As–P exchange have been investigated. Optical properties of passivated and unpassivated InGaAs/GaAs near-surface quantum wells (QWs) grown by metal organic vapor phase epitaxy (MOVPE) are studied by low-temperature continuous-wave and time-resolved photoluminescence (PL). By optimizing the growth conditi...

The linear and nonlinear behaviors of susceptibility via tunable Fano-type interference, based on intersubband transitions in asymmetric double quantum wells (QWs) driven coherently by a probe laser field, are analyzed. It is shown that Kerr nonlinearity can be controlled competently by tuning the energy splitting of the two excited states (the coupling strength of the tunneling), i.e. Fano-typ...

The effects of a decay magnetic field and hydrogen-like impurities on the ground-state binding energy (GSBE) (GSE) weak-coupling bound polarons in asymmetrical Gaussian potential (AGP) III–V compound quantum wells (QWs) were studied based unitary transformation methods linear combination operators. By numerical calculation, we found that affected by AGP, field, Coulomb impurities, type crystal,...

E-learning is now playing a very important role in learning processes and the major concern in all education institutions and universities. Open source e-learning platforms are one of the latest e-learning management systems used to deliver e-learning courses in most of the universities and higher educational institutions in the entire world, also in Jordan. There is a need to compare and evalu...

A new algorithm for planning a collision-free path based on an algebraic curve as well as the concept of path space is developed. Robot path planning has so far been concerned with generating a single collision-free path connecting two specified points in a given robot workspace with appropriate constraints. In this paper, a novel concept of path space (PS) is introduced. A PS is a set of point...

To enable ultrahigh capacity laser communications in future networks, CONSRT is developing all-optical buffers, high-speed lasers, broadband optical amplifiers and memory devices to replace the speed-limiting optical-electrical-optical (OEO) switching system currently used in optic fiber communication. To date, realization of an all-optical communication network has been stymied by the lack of ...