Electron effective mass and nonparabolicity in Ga0.47In0.53As/InP quantum wells.

Composition dependence of the in-plane effective mass in lattice-mismatched, strained Ga1-xInxAs/InP single quantum wells

The composition dependence of the in-plane conduction band effective mass in strained 15nm-thick lattice-mismatched GatJn,As/InP single quantum wells was determined by conventional cyclotron and optically detected cyclotron resonance techniques. Our results are in agreement with a self-consistent calculation taking into account effects due to nonparabolicity, confinement, strain, and finite two...

Strong Optical Filed Intensity Improvement Introducing InGaAsP Quantum Wells in InP Nanocavity

This paper presents the optical characteristics of a quantum well doped InP nanocavity.The resonance wavelength of the nanocavity and the optical field intensity is calculated before and after presence of the quantum wells. The resulting huge filed intensity of about 1.2×108 respect to the incident field is the effect of quantum wells placed in vicinity of center of nanocavity.

Effective mass and band nonparabolicity in remote doped Si/Si0.8Ge0.2 quantum wells

Relaxation of quasi-two-dimensional electrons in a quantizing magnetic field probed by time-resolved cyclotron resonance

We have measured the picosecond time-resolved cyclotron resonance of photogenerated transient carriers in undoped InSb/Al0.09In0.91Sb quantum wells by two-color pump-probe spectroscopy in a magnetic field. The strong conduction-band nonparabolicity of InSb causes the average cyclotron mass of the electrons, which we monitor directly in time, to decrease as the electrons relax towards the band e...

Nonparabolic band effects in GaAs/AlxGa1−xAs quantum dots and ultrathin quantum wells

We have investigated the optical properties of unstrained GaAs/AlxGa1−xAs quantum dot/well systems with the aim of studying the influence of confinement on the effective exciton mass, as determined from the photoluminescence line shift in high magnetic fields 50 T . The effective exciton mass is found to be more than twice the value for bulk GaAs. We attribute this to an enhanced nonparabolicit...