Cuminal, Y.1, Christol, P.2, Rodriguez, J.B2, Joullié, A.2
1 Laboratoire des Sciences des Matériaux et d’Automatique (LASMEA), Université Clermont II, UMR CNRS 6602, Aubiére, France
2 Centre d’Electronique et de Micro-optoélectronique de Montpellier (CEM2), Université de Montpellier-II, UMR CNRS 5507, Montpellier, France
Infrared photonic detectors operating in the mid infrared region find applications in pollution monitoring, high-speed infrared imaging systems and free space telecommunications. There is a need for new uncooled high performance detector systems and antimonide-based (Sb-based) semiconductor quantum structures could be an alternative of the well-established technologies. The main objective of ...
Modeling of III-Nitride Quantum Wells with Arbitrary Crystallographic Orientation for Nitride-Based Photonics
M. Kisin, R. Brown, and H. El-Ghoroury
Ostendo Technologies, Inc., Carlsbad, CA, USA
A program for self-consistent modeling of electron-hole energy spectrum and space-charge distribution in III-nitride based quantum well (QW) structures has been developed. The model takes into consideration full 6-band description of the valence band states, nonparabolicity of the electron spectrum, quantum confinement of electrons and holes, strain induced modifications of the band structure, ...
In this presentation we outline our recent work on Magnetic Liquids, and the great number of application areas these are used. Ferrofluids are nanometer sized magnetic particles, covered by a surfactant, suspended in a carrier medium compatible with the surfactant material. Ferrofluids are applicable to a great and ever increasing number of application areas, such as: • Liquid Seals and ...
P. Mikulski, K. Mcilhany, and R. Malek-Madani
United States Naval Academy
Here we present and discuss numerical solutions to the paraxial wave equation using COMSOL (2D, PDE, General Form, time-dependent analysis). Ultimately, the goal is to extend this treatment of free-space beam propagation to the case of propagation through a medium that is non-uniform and subject to non-linear effects where the beam itself is modifying the properties of the medium in which it is ...
K. Tarnowski, W. Salejda
Institute of Physics, Wroclaw University of Technology, Wroclaw, Poland
Currently there is much interest in electromagnetic metamaterials [1-9]. In our work we have focused on design of tunable metamaterial which can be made within available technology. In proposed design we use metallic split-ring resonators and thin-wires (Figure 1). Moreover we have decided to introduce nematic liquid crystal layer in design to obtain tunability (Figure 2). One can control ...
I. Mozjerin, T. Gibson, and N.M. Litchinitser
Department of Electrical Engineering, The State University of New York at Buffalo, Buffalo, New York, USA
Metamaterials are a new class of artificial materials, which possess various unusual properties. One of these properties is a negative index of refraction produced by setting both the dielectric permittivity ε and the magnetic permeability μ of the material less than zero. Unique electromagnetic phenomena occurring at the interface between negative-index materials and conventional ...
C. Del Vecchio, G. Agapito, G. Tomassi, and E. De Santis
National Institute for Astrophysics, Arcetri Astrophysical Observatory, Firenze, Italy
University of Cassino, Cassino, Italy
The next-generation of Extremely Large Telescopes adaptive optics systems require high-order, long-stroke, quite large deformable mirrors. Higher forces and greater actuator densities than the ones provided by the current technology are needed, still maintaining the severe accuracy and bandwidth requests. Based on a very simple magnetic circuit, providing a compact device, the VRALA actuator ...
In recent years, optical manipulation using optical radiation pressure has been widely studied. In this study, the radiation pressure exerted on various kinds of microscopic objects with different laser beams was evaluated by COMSOL Multiphysics software. By changing beam shapes, microscopic objects can be trapped and rotated. This paper is in Japanese.
P. Gagnon, H. Manouzi, M. El Amraoui, Y. Messaddeq
Laval University, Quebec City, QC, Canada
An important step in designing a microstructured optical fiber is the computation and management of its dispersion curve. It is well-known that computing chromatic dispersion can be done analytically for certain geometries (e.g. step-index fibers), but no such analytical methods is known in the realm of microstructured optical fibers. Figure 1, Figure 2, and Figure 3 illustrate cross-sections of ...
Fibre-Optic Microsensor Based on Surface Plasmon Resonance in a Microfluidic Cell : An Experimental and Numerical Multiphysics Approach
G. Louarn, T. Makiabadi, V. Le Nader, and M. Kanso
Institut des Matériaux Jean-Rouxel (IMN), CNRS- Université de Nantes, France
In the last decade, the surface plasmon resonance (SPR) has become a very sensitive technique for real-time detection in many application areas. Considering the fiber optic concept and the important needs for analyzing biomolecular reactions through automated and miniaturized components, fiber optic sensors based on the SPR technique are becoming an important choice in the field of sensing. In ...