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3D Laser Imaging Reconstruction of Scenes Using New Photometric Gaussian Beam Range Equation

Journal of Physical Science and Application 2015年第4期5卷 309-317页

作者： Mounir Boujenab noureddine eddeqaqi cherkaoui Laboratory of Atomic Mechanics Photonics and Energy Department of Physics Faculty of Science University Moulay lsmailMeknes 50000 Morocco

In this article the problem of three-dimensional （3-D） reconstruction of scenes from terrestrial laser rangefinder data is processed, we present the simulations results of radiometric range function of the laser range finder imaging system for better optimization of maximum range detection with a given SNR （Signal-to-noise ratio）. The study proposes a new reformulation of the radiometric Gaussian beam range equation on the basis of the photodetector active area. The adjustment of the optical and geometrical characteristics of the laser range finder so defined can be used to minimize the signal span to avoid the saturation of the detector cell and improve the ranging measurements （accuracy and range） for a 3D imaging application.

关键词： Laser ranging and imaging signal to noise ratio Gaussian beam photometric range equation.

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Investigation of a New Waveguide Structure Based on Negative Index Material for Optoelectronic Applications

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Optics and Photonics Journal 2017年第7期7卷 123-132页

作者： Nour El Houda Hissi Bouchra Mokhtari Saida Bahsine noureddine cherkaoui eddeqaqi Mohammed Musa Shabat Physics Department Moulay Ismail University Meknes Morocco Physics Department Islamic University of Gaza Gaza Palestine

In this work, a waveguide structure consisting of a new artificial negative index material (NIM) surrounded by a nonlinear cover and a ferrite (YIG) substrate has been designed and investigated. We apply the boundary conditions and impose the condition of negative effective permeability of the ferrite slab to derive the dispersion relation related to the proposed structure. The NIM permittivity and permeability are not constant and depend on the operating frequency. The dispersion properties of the nonlinear electromagnetic surface waves (NEM) are analyzed and the associated propagation index is calculated. Results show that the dispersion could be tuned and controlled by selecting the NIM film thickness and the film-cover interface nonlinearity. The proposed structure is supporting unusual types of NEM surface waves having a non-reciprocal behavior widely used in designing optoelectronic devices.

关键词： Negative Index Material Nonlinearity Ferrite Substrate Waveguide Dispersion Relation Non-Reciprocal Behavior

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