Coherently coupled vertical-cavity surface-emitting laser arrays offer unique advantages for nonmechanical beam steering applications. We have applied dynamic coupled mode theory to show that the observed temporal phase shift between vertical-cavity surface-emitting array elements is caused by the detuning of their resonant wavelengths. Hence, a complete theoretical connection between the diffe...

A new computer program, FLASH (Flow-Log Analysis of Single Holes), is presented for the analysis of borehole vertical flow logs. The code is based on an analytical solution for steady-state multilayer radial flow to a borehole. The code includes options for (1) discrete fractures and (2) multilayer aquifers. Given vertical flow profiles collected under both ambient and stressed (pumping or inje...

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A variety of methods are examined in this study order to improve oil recovery from low-permeability heterogeneous reservoirs oil-saturated shale deposits. Calculations based on the fluid flow model revealed that water and gas injection was effective, horizontal directional wells, including those employing hydraulic fracturing evaluated study. Moreover, wells with vertical completions found be o...

We report and analyze the supermode switching with current injection found for coherently-coupled dual-element vertical cavity surface emitting laser arrays. The output power, spectral characteristics, far-field mode profile are measured a range of bias operating conditions. coupling-induced enhanced power from an in-phase or out-of-phase is confirmed when approximately equal currents injected ...

Dear Editor, This letter concerns about the security problem of underwater cyber-physical system (UCPS) for depth-keeping task in vertical plane. A dynamic parametric model UCPS with ocean currents and hydrostatic is considered. With intelligence controller, objective function a zero-sum game between attacker controller introduced. The destroys by injecting designed false data into system. Comp...