Research Article Influence of Thickness on the Holographic Parameters of H-PDLC Materials
... controlled by bead spacers between the two pieces of ITO glass. In this paper we report a study of the influence of thickness on the holographic properties of this type of materials. To fit the physical and optical thickness of the samples we used the rigorous coupled wave analysis assuming an expon ...
... controlled by bead spacers between the two pieces of ITO glass. In this paper we report a study of the influence of thickness on the holographic properties of this type of materials. To fit the physical and optical thickness of the samples we used the rigorous coupled wave analysis assuming an expon ...
Rogue waves in a wave tank - Nat. Hazards Earth Syst. Sci.
... The basic wave group is formed by three waves whose characteristics are shown in Table 1. We must take into consideration that our experiment, related to our study here, belongs to the deep water range. As the main objective of our job was the generation of rogue waves, we will not dwell on other as ...
... The basic wave group is formed by three waves whose characteristics are shown in Table 1. We must take into consideration that our experiment, related to our study here, belongs to the deep water range. As the main objective of our job was the generation of rogue waves, we will not dwell on other as ...
Flatland optics - Weizmann Institute of Science
... the wedge direction of the prism. We conclude that a passive 3D component such as a prism can change the wavelength ⌳ of Flatland. Thus instant second-order harmonic generation as well as subharmonic generation can be performed effectively without employing nonlinear optics. These statements refer t ...
... the wedge direction of the prism. We conclude that a passive 3D component such as a prism can change the wavelength ⌳ of Flatland. Thus instant second-order harmonic generation as well as subharmonic generation can be performed effectively without employing nonlinear optics. These statements refer t ...
Light Measurement Handbook
... these lamps vary significantly with input voltage. Flat response detectors measure only output power in watts, taking into consideration light at every wavelength. Another approach is to use a narrow band filter to measure only within a small wavelength band. This is acceptable if the lamp has been ...
... these lamps vary significantly with input voltage. Flat response detectors measure only output power in watts, taking into consideration light at every wavelength. Another approach is to use a narrow band filter to measure only within a small wavelength band. This is acceptable if the lamp has been ...
Department of Physics, Technical University Ostrava 17. listopadu
... the refractive index dispersion n(λ), the interference order m and thus the difference of path lengths between the interfering beams in the air 2L and the overall effective thickness t ef − t can be determined. The interference order m of such a value has to be chosen so that the OPD ∆ M (λ) between ...
... the refractive index dispersion n(λ), the interference order m and thus the difference of path lengths between the interfering beams in the air 2L and the overall effective thickness t ef − t can be determined. The interference order m of such a value has to be chosen so that the OPD ∆ M (λ) between ...
characterization of nondiffracting bessel beams in the propagation
... beam. This beam has circular symmetry and a transverse distribution with the form of a Bessel function of first kind and zero order, J0(krr), where r is the distance from z axis and kr is the length of the component, orthogonal to the propagation axis, of any wave vector belonging to one of the inte ...
... beam. This beam has circular symmetry and a transverse distribution with the form of a Bessel function of first kind and zero order, J0(krr), where r is the distance from z axis and kr is the length of the component, orthogonal to the propagation axis, of any wave vector belonging to one of the inte ...
laser-based fibre-optic sensor for measurement of surface properties
... The optical disk player has comprehensively replaced use o f the mechanical stylus in the music industry In the field o f surface roughness measurement, numerous optical methods have been used in the place o f the mechanical stylus Surface roughness can be measured through the effect o f light scatt ...
... The optical disk player has comprehensively replaced use o f the mechanical stylus in the music industry In the field o f surface roughness measurement, numerous optical methods have been used in the place o f the mechanical stylus Surface roughness can be measured through the effect o f light scatt ...
Természet Világa 1995-2004
... and the early 1990s) little attention has been paid to the significance of polarized light reflected from shiny surfaces as a cue to orientation for animals sensitive to this source of polarization. Among the few investigations that have been done in this topic, one can mention the microvillar speci ...
... and the early 1990s) little attention has been paid to the significance of polarized light reflected from shiny surfaces as a cue to orientation for animals sensitive to this source of polarization. Among the few investigations that have been done in this topic, one can mention the microvillar speci ...
Reflectivity of Nonlinear Apodized Chirped Fiber Bragg Grating Under Water
... the quasi-periodic index perturbation in amplitude and (or) phase, we may obtain different optical filter characteristics. The formation of permanent gratings by photosensitivity in an optical fiber was first ...
... the quasi-periodic index perturbation in amplitude and (or) phase, we may obtain different optical filter characteristics. The formation of permanent gratings by photosensitivity in an optical fiber was first ...
How can the reflections of light on the surface of
... it is polarized. For unpolarized light, the two components have exactly the same amplitude. An axis in the direction of the polarization axis of the filter and an axis perpendicular to the polarization axis of the filter are then used. When the light passes through the filter, the perpendicular comp ...
... it is polarized. For unpolarized light, the two components have exactly the same amplitude. An axis in the direction of the polarization axis of the filter and an axis perpendicular to the polarization axis of the filter are then used. When the light passes through the filter, the perpendicular comp ...
Geometrical-optics code for computing the optical
... it is imperative to obtain the single-scattering properties of the dielectric particles. In principle, the single-scattering properties can be calculated by using Mie theory for spheres of any size. But the Mie solutions are expansions in terms of the size parameter x ⫽ 2a兾, where a is the radius ...
... it is imperative to obtain the single-scattering properties of the dielectric particles. In principle, the single-scattering properties can be calculated by using Mie theory for spheres of any size. But the Mie solutions are expansions in terms of the size parameter x ⫽ 2a兾, where a is the radius ...
A nanometer notch filter with high rejection and throughput
... A single, m e d ium-sized,Fabry-Perot ( - 7 5 m m diamThe transmission responsefunctions of the Fabryeter) with high quality plates (-,X/200) can be incorpoPerot &talons were measuredusing axial illumination of rated into a recycling optics arrangementwhich presents f/l00 and 2-cm b e a m diameter l ...
... A single, m e d ium-sized,Fabry-Perot ( - 7 5 m m diamThe transmission responsefunctions of the Fabryeter) with high quality plates (-,X/200) can be incorpoPerot &talons were measuredusing axial illumination of rated into a recycling optics arrangementwhich presents f/l00 and 2-cm b e a m diameter l ...
Optical Fiber Communication
... core having reflecting index lower than core. It helps to keep the light within the core throughout the phenomena of total internal reflection. • Buffer Coating – plastic coating that protects the fiber made of silicon rubber. The typical diameter of fiber after coating is 250-300 um. ...
... core having reflecting index lower than core. It helps to keep the light within the core throughout the phenomena of total internal reflection. • Buffer Coating – plastic coating that protects the fiber made of silicon rubber. The typical diameter of fiber after coating is 250-300 um. ...
Polarimetric imaging of crystals - Werner Kaminsky
... measurements of the CD spectra of chromatin. They faced instrumental artifacts10 arising from electronic polarization modulators in commercial instruments that typically generate sinusoidally varying polarization states,11 thereby introducing a small admixture of linearly polarized light into the ci ...
... measurements of the CD spectra of chromatin. They faced instrumental artifacts10 arising from electronic polarization modulators in commercial instruments that typically generate sinusoidally varying polarization states,11 thereby introducing a small admixture of linearly polarized light into the ci ...
Production of photonic nanojets by using pupil
... are normally smaller than FWHMxs at the same cuboid size due to the parallells between the plotted plane—yz and electric field, E. Also, a wide peak of non-masked FWHMy curve is shown after L = 3λ, which is related to a dramatic profile change of focus on yz plane from a single peak mode to three ...
... are normally smaller than FWHMxs at the same cuboid size due to the parallells between the plotted plane—yz and electric field, E. Also, a wide peak of non-masked FWHMy curve is shown after L = 3λ, which is related to a dramatic profile change of focus on yz plane from a single peak mode to three ...
Wave optics theory and 3-D deconvolution
... where the volume to be reconstructed is largely transparent (i.e. with minimal scattering or absorption). Finally, we characterize the lateral resolution limit in light field microscopy, and discuss how optical design choices affect these resolution limits. To aid in exploring these trade-offs, we p ...
... where the volume to be reconstructed is largely transparent (i.e. with minimal scattering or absorption). Finally, we characterize the lateral resolution limit in light field microscopy, and discuss how optical design choices affect these resolution limits. To aid in exploring these trade-offs, we p ...
Resolution scaling in STED microscopy
... dark and bright states, to achieve such resolutions have since been demonstrated [8-13]. At the same time, STED has been applied to a multitude of imaging tasks [14-17] mainly in biology and more recently, STED microscopes have become commercially available. The resolution achieved by such a far-fie ...
... dark and bright states, to achieve such resolutions have since been demonstrated [8-13]. At the same time, STED has been applied to a multitude of imaging tasks [14-17] mainly in biology and more recently, STED microscopes have become commercially available. The resolution achieved by such a far-fie ...
The Influence of Air-hole Filling Fraction of Photonics Crystal Fibers
... studied SBS in ultra core PCF, the results indicate that the Brillouin gain spectrum has multi-peak and Brillouin frequency shift is reduced to near 10 GHz as the diameter of PCF core is 70% of the incident light wavelength. This is due to a variety of acoustic mode couple in the PCF. J. Zhao et al. ...
... studied SBS in ultra core PCF, the results indicate that the Brillouin gain spectrum has multi-peak and Brillouin frequency shift is reduced to near 10 GHz as the diameter of PCF core is 70% of the incident light wavelength. This is due to a variety of acoustic mode couple in the PCF. J. Zhao et al. ...
Modeling of nano-photonics
... independent light guiding around a sharp bend. This is the first structure exhibiting such polarization-insensitive transmission at such length scales. One approach to polarization insensitivity would be to design a photonic crystal with line defects possessing the appropriate cross-sectional symme ...
... independent light guiding around a sharp bend. This is the first structure exhibiting such polarization-insensitive transmission at such length scales. One approach to polarization insensitivity would be to design a photonic crystal with line defects possessing the appropriate cross-sectional symme ...
Superresolution size determination in fluorescence microscopy: A
... tion in the image data file. Distances between such objects down to about 15 nm have been measured with a precision 共95% confidence limit兲 as good as 10 nm using optically ‘‘conventional’’ fluorescence microscopes.19,24 In this article, results from a different far field light microscopical approach ...
... tion in the image data file. Distances between such objects down to about 15 nm have been measured with a precision 共95% confidence limit兲 as good as 10 nm using optically ‘‘conventional’’ fluorescence microscopes.19,24 In this article, results from a different far field light microscopical approach ...
On the influence of wind and waves on underwater
... tween 5 and 9 s and wave heights between 1 and 3 m ocuse the short-wave part of the spectrum only. The spectra apcur most frequently (60 % of all cases). This range is framed ply for a minimum wind speed of 3 m s−1 . Figure 1 shows the white in the right diagram of Fig. 2. utilized elevation spectra ...
... tween 5 and 9 s and wave heights between 1 and 3 m ocuse the short-wave part of the spectrum only. The spectra apcur most frequently (60 % of all cases). This range is framed ply for a minimum wind speed of 3 m s−1 . Figure 1 shows the white in the right diagram of Fig. 2. utilized elevation spectra ...
Noise-equivalent sensitivity of photoacoustics
... in the frequency range of hundreds of kilohertz to a few gigahertz. The generated pressure amplitude is proportional to the modulated light intensity, which implies that the generated acoustic intensity is proportional to the square of the modulated light intensity. So in the sense of energy convers ...
... in the frequency range of hundreds of kilohertz to a few gigahertz. The generated pressure amplitude is proportional to the modulated light intensity, which implies that the generated acoustic intensity is proportional to the square of the modulated light intensity. So in the sense of energy convers ...
ChromatiC dispersion
... At the interface of such a material with air or vacuum (index of ~1), Snell’s law predicts that light incident at an angle θ to the normal will be refracted at an angle arcsin( sin (θ) / n) . Thus, blue light, with a higher refractive index, will be bent more strongly than red light, resulting in th ...
... At the interface of such a material with air or vacuum (index of ~1), Snell’s law predicts that light incident at an angle θ to the normal will be refracted at an angle arcsin( sin (θ) / n) . Thus, blue light, with a higher refractive index, will be bent more strongly than red light, resulting in th ...
Surface plasmon resonance microscopy
Surface Plasmon Resonance Microscopy (SPRM) is a label free analytical tool that combines the surface plasmon resonance of metallic surfaces with imaging of the metallic surface.The heterogeneity of the refractive index of the metallic surface imparts high contrast images, caused by the shift in the resonance angle.SPRM can achieve a thickness sensitivity of few tenths of nanometer and lateral resolution achieves values of micrometer scale.SPRM is used to characterize surfaces, self-assembled monolayers, multilayer films, metal nanoparticles, oligonucleotides arrays, binding and reduction reactions.Surface Plasmon polaritons are surface electromagnetic waves coupled to oscillating free electrons of a metallic surface that propagate along a metal/dielectric interface.Since polaritons are highly sensitive to small changes in the refractive index of the metallic material,it can be used as a biosensing tool that does not require labeling. SPRM measurements can be made in real-time.Wang and collaborators studied the binding kinetics of membrane proteins in single cells.The experimental setup of an SPRM can be seen in the Figure 1, where an adherent cell is grown on a gold film and placed in an inverted microscope, p-polarized light was used to create the surface plasmons on the gold film and a CCD camera was used to create the SPR image.