The feasibility of mid-infrared (MIR) lasing in erbium-doped gallium lanthanum sulfide (GLS) micro-disks was examined. Lasing condition at 4.5 µm signal using 800 nm pump source was simulated using rate equations, mode propagation and transfer matrix formulation. Cavity quality (Q) factors of 1.48 × 10(4) and 1.53 × 10(6) were assumed at the pump and signal wavelengths, respectively, based on s...

Application-level nondeterminism can lead to inconsistent state that defeats the purpose of replication as a fault-tolerance strategy. We present Midas, a new approach for living with nondeterminism in distributed, replicated, middleware applications. Midas exploits (i) the static program analysis of the application’s source code prior to replica deployment and (ii) the online compensation of r...

We describe new configurations of electromagnetic (EM) material parameters, the electric permittivity epsilon and magnetic permeability micro, which allow one to construct devices that function as invisible tunnels. These allow EM wave propagation between the regions at the two ends of a tunnel, but the tunnels themselves and the regions they enclose are not detectable to lateral EM observation...

The technology involves a new type of compact device based on magneto-optics in a fiber micro modulator. This type of modulator allows the user to inter manipulate and control the propagation of the incoming light. The operation mechanism uses external magnetic field to manipulate Fe micro particle in order to cause modulation of an optical signal that propagates along an optical waveguide. Thi...

Two-phase micro-pipeline asynchronous modules show faster performance than common four-phase control systems, but the conventional systems with multi-port modules normally suffer from long signal paths on stacked C-elements. NOR-based control schemes provide an alternative solution to problems such as propagation delay. This paper compares modified versions of these two popular pipelined system...

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Optical feedback interferometry (OFI) applied to microscale flow sensing is studied theoretically and experimentally. A new model is investigated that predicts the OFI signal. This model is based on the Lang-Kobayashi equations and highlights the importance of the laser beam propagation and the laser-particle scattering performances. For the first time, the angle distribution of the scattered l...

We present and experimentally validate a computational model for the light propagation in thin-film solar cells that integrates non-paraxial scalar diffraction theory with non-sequential ray-tracing. The model allows computing the spectral layer absorbances of solar cells with micro- and nano-textured interfaces directly from measured surface topographies. We can thus quantify decisive quantiti...

Methodological recommendations for lighting modes growing rootstocks and varieties of domestic plum at the stages micro propagation, in vitro rooting ex adaptation determine usage lamps with different light spectra, allowing to obtain more higher results clonal including: height regenerated plants number leaves, propagation ratio; development root system; growth physiological state stage adapta...

Experiments demonstrating controlled optical propagation through a dynamic, highly scattering medium are described. The phase of a coherent beam is controlled both spatially and temporally using a reflective, 1020-segment MEMS spatial light modulator. OCIS codes: (290.4210) Multiple scattering; (010.1080) Active or adaptive optics; (110.0113) Imaging through turbid media; 230.6120 Spatial light...