Disorder-Enhanced Imaging with Spatially Controlled Light
... The importance of light for mankind is reflected by the tremendous efforts to take control over its creation and propagation. Profiting from the interplay between light and matter, carefully designed optical elements, such as mirrors and lenses, have been successfully employed in the last centuries ...
... The importance of light for mankind is reflected by the tremendous efforts to take control over its creation and propagation. Profiting from the interplay between light and matter, carefully designed optical elements, such as mirrors and lenses, have been successfully employed in the last centuries ...
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... are at the center of a significant research effort [1]. Graphene in particular, the first two-dimensional atomic crystal, has attracted a significant amount of interest in the past decade due to its many unique physical properties (e.g., strong field effect with ultrahigh electron mobility [2,3], hi ...
... are at the center of a significant research effort [1]. Graphene in particular, the first two-dimensional atomic crystal, has attracted a significant amount of interest in the past decade due to its many unique physical properties (e.g., strong field effect with ultrahigh electron mobility [2,3], hi ...
The influence of growth temperature on CVD grown graphene on SiC
... graphene flakes remain when the solvent evaporates. But the easiest way is to prepare graphene directly onto the surface. Deposition on surface can be done by using a method called CVD (Figure 4 (g)) that is a wellknown process where a substrate is exposed to gaseous compounds, called precursor. The ...
... graphene flakes remain when the solvent evaporates. But the easiest way is to prepare graphene directly onto the surface. Deposition on surface can be done by using a method called CVD (Figure 4 (g)) that is a wellknown process where a substrate is exposed to gaseous compounds, called precursor. The ...
Optical Resonators and Mode Matching
... the surrounding air that it reflects a substantial portion of the incident light. Nowadays, totalinternal reflection within a sphere or other geometrical structure is also often utilized in optical resonators. In the visible and infrared region of the optical spectrum mirrors are formed either of me ...
... the surrounding air that it reflects a substantial portion of the incident light. Nowadays, totalinternal reflection within a sphere or other geometrical structure is also often utilized in optical resonators. In the visible and infrared region of the optical spectrum mirrors are formed either of me ...
META`16 Malaga - Spain - META`17, the 8th International
... Pennsylvania in Philadelphia, with affiliations in the Departments of Electrical and Systems Engineering, Materials Science and Engineering, Physics and Astronomy, and Bioengineering. He received his B.S. degree from the University of Tehran, and his M.S and Ph.D. degrees from Caltech. He has receiv ...
... Pennsylvania in Philadelphia, with affiliations in the Departments of Electrical and Systems Engineering, Materials Science and Engineering, Physics and Astronomy, and Bioengineering. He received his B.S. degree from the University of Tehran, and his M.S and Ph.D. degrees from Caltech. He has receiv ...
Counterpropagating optical beams and solitons
... of two CP optical beams was shown to lead to the formation of a novel type of vector (or bimodal) solitons [22, 23], for both coherent and incoherent interactions. A more detailed analysis [24] revealed that these CP solitons may display a variety of instabilities, accompanied by nontrivial temporal ...
... of two CP optical beams was shown to lead to the formation of a novel type of vector (or bimodal) solitons [22, 23], for both coherent and incoherent interactions. A more detailed analysis [24] revealed that these CP solitons may display a variety of instabilities, accompanied by nontrivial temporal ...
optical properties of biaxial minerals
... Two types of mineral sections are useful for determination of optic sign of biaxial minerals. Sections cut r to Bxa: Again conoscopic viewing is necessary, ie., with convergent polarized light, high power objective and analyser and Bertrand Lens are inposition, to obtain the optic figure (FIG. 7.13 ...
... Two types of mineral sections are useful for determination of optic sign of biaxial minerals. Sections cut r to Bxa: Again conoscopic viewing is necessary, ie., with convergent polarized light, high power objective and analyser and Bertrand Lens are inposition, to obtain the optic figure (FIG. 7.13 ...
YZM NI
... of the polymer layer. As stated above, this distinctive swelling occurs as a result of a transition between a semicrystalline state to a gel state of the polymer. Under increasing humidity, a critical activity of water is required to induce melting of the crystalline domains in the semicrystalline P ...
... of the polymer layer. As stated above, this distinctive swelling occurs as a result of a transition between a semicrystalline state to a gel state of the polymer. Under increasing humidity, a critical activity of water is required to induce melting of the crystalline domains in the semicrystalline P ...
Switching terahertz waves with gate-controlled active graphene metamaterials LETTERS *
... charge carrier density by simple electric gating. This charge carrier handling capability in graphene is an order of magnitude larger (1013 –1014 cm−2 ; refs 21,22) than that of conventional 2DEG systems16,20 . Furthermore, the small effective mass of charge carriers in graphene makes it possible to ...
... charge carrier density by simple electric gating. This charge carrier handling capability in graphene is an order of magnitude larger (1013 –1014 cm−2 ; refs 21,22) than that of conventional 2DEG systems16,20 . Furthermore, the small effective mass of charge carriers in graphene makes it possible to ...
Three-Dimensional Simulation of Vertical-Cavity Surface
... m to 20 km range) due to better yield, less expensive testing, drive electronics and packaging. In the short-haul links comprising mainly multi-mode fibers, light emitting diodes (LEDs), 780 nm CD lasers and multi-mode VCSELs are the candidates as light sources. LEDs are most common, but suffer from l ...
... m to 20 km range) due to better yield, less expensive testing, drive electronics and packaging. In the short-haul links comprising mainly multi-mode fibers, light emitting diodes (LEDs), 780 nm CD lasers and multi-mode VCSELs are the candidates as light sources. LEDs are most common, but suffer from l ...
Radiative Transfer Theory - UCL Department of Geography
... polarised detector). As this is defined for an infinitessimal soild angle, it is more usual to use the Bidirectional Reflectance Factor (BRF) c r , i (with implicit wavelength etc. depoendence). This can be defined as the ratio of radiance leaving the surface around direction r I r ...
... polarised detector). As this is defined for an infinitessimal soild angle, it is more usual to use the Bidirectional Reflectance Factor (BRF) c r , i (with implicit wavelength etc. depoendence). This can be defined as the ratio of radiance leaving the surface around direction r I r ...
Composite optical vortices - RIT Center for Imaging Science
... one beam is superimposed with another, the phase of the composite field differs from that of the component beams. Being a topological phase structure, an optical vortex is readily affected when it is combined with other fields. The new or ‘‘composite vortex’’ may be repositioned in space or annihila ...
... one beam is superimposed with another, the phase of the composite field differs from that of the component beams. Being a topological phase structure, an optical vortex is readily affected when it is combined with other fields. The new or ‘‘composite vortex’’ may be repositioned in space or annihila ...
Topological pumping over a photonic Fibonacci quasicrystal Please share
... structure. Finally, β is increased back to 25 between z = 70 mm and z = 75 mm, ending with a Fibonacci chain. (b) Experimental results of topological pumping. The measured intensity distributions as a function of the position are presented at different stages of the adiabatic evolution, i.e., differ ...
... structure. Finally, β is increased back to 25 between z = 70 mm and z = 75 mm, ending with a Fibonacci chain. (b) Experimental results of topological pumping. The measured intensity distributions as a function of the position are presented at different stages of the adiabatic evolution, i.e., differ ...
Optical Fuzzy Logic for Low-Power Satellite
... optical logic implementations tried to mimic electronic logic with optics. This failed because photons don’t behave the same way as electrons. The main components used in the new optical logic architecture were the Mach-Zehnder interferometer (MZI) (figure 7) in bulk optics and the waveguide in its ...
... optical logic implementations tried to mimic electronic logic with optics. This failed because photons don’t behave the same way as electrons. The main components used in the new optical logic architecture were the Mach-Zehnder interferometer (MZI) (figure 7) in bulk optics and the waveguide in its ...
Silicon photonics
Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI).Silicon photonic devices can be made using existing semiconductor fabrication techniques, and because silicon is already used as the substrate for most integrated circuits, it is possible to create hybrid devices in which the optical and electronic components are integrated onto a single microchip. Consequently, silicon photonics is being actively researched by many electronics manufacturers including IBM and Intel, as well as by academic research groups such as that of Prof. Michal Lipson, who see it is a means for keeping on track with Moore's Law, by using optical interconnects to provide faster data transfer both between and within microchips.The propagation of light through silicon devices is governed by a range of nonlinear optical phenomena including the Kerr effect, the Raman effect, two photon absorption and interactions between photons and free charge carriers. The presence of nonlinearity is of fundamental importance, as it enables light to interact with light, thus permitting applications such as wavelength conversion and all-optical signal routing, in addition to the passive transmission of light.Silicon waveguides are also of great academic interest, due to their ability to support exotic nonlinear optical phenomena such as soliton propagation.