Electro-absorptive properties of interdiffused InGaAsP/InP quantum wells

Electro-absorptive properties of interdiffused InGaAsP/InP quantum wells

Optical gain of interdiffused GaInNAs/GaAs quantum wells

A self-consistent model for the band structure and optical gain spectra in interdiffused GaxIn1−xN0.04As0.96/ GaAs single quantum wells are studied theoretically using Fick’s Law and the Fermi Golden Rule. Due to quantumwell interdiffusion, the peak gain and its peak vary with the annealing time. Our results show that the interdiffusion technique can be used to tune the operation wavelength for...

Analysis of Photoluminescence measurement data from interdiffused Quantum Wells using Adaptive Real coded Quantum inspired Evolutionary Algorithm

Reliable analysis of any experimental data is always difficult due to the presence of noise and other types of errors. This paper analyzes data obtained from photoluminescence measurement, after annealing of interdiffused Quantum Well hetrostructures, using an Adaptive Real coded Quantum inspired Evolutionary Algorithm (ARQiEA). The proposed algorithm directly computes interdiffusion parameters...

Giant electro-optic effect in Ge/SiGe coupled quantum wells

Silicon-based photonics is now considered as the photonic platform for the next generation of on-chip communications. However, the development of compact and low power consumption optical modulators is still challenging. Here we report a giant electro-optic effect in Ge/SiGe coupled quantum wells. This promising effect is based on an anomalous quantum-confined Stark effect due to the separate c...

Magnetic properties of HgTe quantum wells

Using analytical formulas as well as a finite-difference scheme, we investigate themagnetic field dependence of the energy spectra and magnetic edge states of HgTe/CdTe-based quantum wells in the presence of perpendicular magnetic fields and hard walls for the band-structure parameters corresponding to the normal and inverted regimes. Whereas one can not find counterpropagating, spin-polarized ...