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Several physical quantities of interest are of quantum nature, often measurable as distinct particles. Light is one such example, photons being its particles. In conventional detectors, light is converted onto electrical charges and hence onto a current or ...
Experimental demonstration of optical speedup at transparency (OSAT) has been performed on a 1 mm long semiconductor optical amplifiers (SOA). OSAT is a recently proposed scheme that decreases the recovery time of an SOA while maintaining the available gai ...
Time-resolved measurements of the resonant Rayleigh scattering from quantum well excitons are shown to provide information on the energy-level statistics of the localized exciton states. The signal transients are reproduced by a microscopic quantum model o ...
Photoluminescence lifetimes of the n = 2 level in a large quantum well show a clear nonmonotonic dependence on the density of optically generated carriers. Varying the power density over five orders of magnitude we prove directly the high efficiency of car ...
The theory of resonant Rayleigh scattering of light by excitons in a disordered quantum structure is presented. Disorder is modeled by a random Gauss distributed potential with finite correlation length in space. The time dependent scattered si,anal under ...
Strained In0.35Ga0.65As/GaAs quantum wells of various thicknesses (6-16 monolayers) obtained by molecular beam epitaxy at 400 degrees C were studied by optical pumping techniques at 4 K. Improved quantum well optical properties, due to significant increase ...
This work shows that the critical thickness for the two-dimensional-three-dimensional growth mode transition during the growth of Ga0.65In0.35As on GaAs(001) can be significantly increased by increasing the growth rate. This experimental finding is corrobo ...
The notion of encapsulations is introduced as the basic construct used to support optimistic make (a software tool). The authors describe the implementation of optimistic make in the V-System on a collection of SUN workstations. Statistics measured from th ...
Optimistic make is a version of make that executes the commands necessary to bring targets up-to-date prior to the time the user types a make request. Side effects of these optimistic computations (such as file or screen updates) are concealed until the ma ...
Recently Zachau, Kash, and Masselink [Phys. Rev. B 44, 4048 (1991)] determined hole-subband dispersions in quantum wells experimentally with the use of hot-electron-acceptor luminescence. We present here results of multiple-band calculations, which are in ...
