Research Article Influence of Thickness on the Holographic Parameters of H-PDLC Materials
... recording. The diffraction behavior looks very similar. At best we can say that the gratings with low values of thickness exhibit slightly better energetic sensitivity. It is important to note that we defined this parameter as the exposure required to achieve the maximum value of DE, or in other wor ...
... recording. The diffraction behavior looks very similar. At best we can say that the gratings with low values of thickness exhibit slightly better energetic sensitivity. It is important to note that we defined this parameter as the exposure required to achieve the maximum value of DE, or in other wor ...
A Basic Introduction to BRDF-Based Lighting
... Additionally, when light interacts with a surface, different wavelengths (colors) of light may be absorbed, reflected, and transmitted to varying degrees depending upon the physical properties of the material itself. This means that a BRDF is also a function of wavelength. Finally, light interacts d ...
... Additionally, when light interacts with a surface, different wavelengths (colors) of light may be absorbed, reflected, and transmitted to varying degrees depending upon the physical properties of the material itself. This means that a BRDF is also a function of wavelength. Finally, light interacts d ...
Chapter 12 Plane Waves at Boundaries and in Dispersive Media
... the reflection coefficient and is designated by (gamma), ...
... the reflection coefficient and is designated by (gamma), ...
Adaptive Optics and the cone mosaic
... create an artificial guide star by shining a laser into the atmosphere. Because the laser beam is deflected by astronomical seeing on the way up, the returning laser light does not move around in the sky as astronomical sources do. In order to keep astronomical images steady, a natural star nearby i ...
... create an artificial guide star by shining a laser into the atmosphere. Because the laser beam is deflected by astronomical seeing on the way up, the returning laser light does not move around in the sky as astronomical sources do. In order to keep astronomical images steady, a natural star nearby i ...
Slide 1
... • EUV radiation is strongly absorbed in virtually all materials, even gases, so EUV imaging must be carried out in a near vacuum. • There is no refractive lenses usable - EUVL imaging systems are entirely reflective. • But EUV reflectivity of individual materials at near-normal incidence is very low ...
... • EUV radiation is strongly absorbed in virtually all materials, even gases, so EUV imaging must be carried out in a near vacuum. • There is no refractive lenses usable - EUVL imaging systems are entirely reflective. • But EUV reflectivity of individual materials at near-normal incidence is very low ...
Second harmonic generation via total internal reflection quasi
... dispersion of the nonlinear medium. Another way to achieve quasi-phase-matching is by utilising the relative Fresnel phase shift (∆Φ F) between the FW and SH, induced upon total internal reflection (TIR) of the two waves at the medium-air interface to compensate for the dispersion phase mismatch (∆k ...
... dispersion of the nonlinear medium. Another way to achieve quasi-phase-matching is by utilising the relative Fresnel phase shift (∆Φ F) between the FW and SH, induced upon total internal reflection (TIR) of the two waves at the medium-air interface to compensate for the dispersion phase mismatch (∆k ...
A negative permeability material at red light
... A thin film of a nanostructured metamaterial with physical thickness δ can be characterized through its spectra to have an effective refractive index n = n ′ + ιn ′′ and an effective impedance η = η ′ + ιη ′′ . To obtain these parameters, the complex values of the transmitted and reflected fields s ...
... A thin film of a nanostructured metamaterial with physical thickness δ can be characterized through its spectra to have an effective refractive index n = n ′ + ιn ′′ and an effective impedance η = η ′ + ιη ′′ . To obtain these parameters, the complex values of the transmitted and reflected fields s ...
MICROSCOPY
... the resin has been polymerized (hardened) the sample is thin sectioned (ultra thin sections) and stained - it is then ready for viewing. ...
... the resin has been polymerized (hardened) the sample is thin sectioned (ultra thin sections) and stained - it is then ready for viewing. ...
Improved modeling of grid structures on optics: transmission, sheet
... Windows and domes often require an electrically conductive coating to shield the underlying sensors from electromagnetic interference (EMI). While a very thin layer of metal can be deposited on the substrate to provide excellent conductivity, the optical transparency would be dramatically reduced. A ...
... Windows and domes often require an electrically conductive coating to shield the underlying sensors from electromagnetic interference (EMI). While a very thin layer of metal can be deposited on the substrate to provide excellent conductivity, the optical transparency would be dramatically reduced. A ...
Conference title, upper and lower case, bolded, 18 point type
... Windows and domes often require an electrically conductive coating to shield the underlying sensors from electromagnetic interference (EMI). While a very thin layer of metal can be deposited on the substrate to provide excellent conductivity, the optical transparency would be dramatically reduced. A ...
... Windows and domes often require an electrically conductive coating to shield the underlying sensors from electromagnetic interference (EMI). While a very thin layer of metal can be deposited on the substrate to provide excellent conductivity, the optical transparency would be dramatically reduced. A ...
Experimental study of transmission enhancement of evanescent waves through silver
... of transmission enhancement of evanescent waves has not been reported yet to our knowledge. Most researchers directly take the computed transmission enhancement factor as an input to estimate other physical effects, or indirectly extract the information for the dip in attenuated total reflection. As ...
... of transmission enhancement of evanescent waves has not been reported yet to our knowledge. Most researchers directly take the computed transmission enhancement factor as an input to estimate other physical effects, or indirectly extract the information for the dip in attenuated total reflection. As ...
Modes Effective Refractive Index Difference Measurement
... of a few-mode optical fiber is much more challenging due to the co-existing of more than one modes than the characterization of a single mode optical fiber. The effective refractive indices of the modes, and effective refractive index differences between the modes are important characteristics for f ...
... of a few-mode optical fiber is much more challenging due to the co-existing of more than one modes than the characterization of a single mode optical fiber. The effective refractive indices of the modes, and effective refractive index differences between the modes are important characteristics for f ...
Circular Dichroism (CD) and Optical Rotatory Dispersion (ORD
... • Plane polarized light consists two circularly polarized components of equal intensity • Two circularly polarized components are like left- and right-handed springs/helices • As observed by looking at the source, right-handed circularly polarized light rotates clockwise • Frequency of rotation is r ...
... • Plane polarized light consists two circularly polarized components of equal intensity • Two circularly polarized components are like left- and right-handed springs/helices • As observed by looking at the source, right-handed circularly polarized light rotates clockwise • Frequency of rotation is r ...
1.1 Objectives
... formed by multiple light filaments is able to provide long range guiding of microwave beams without spreading [11]. Recent experiments also show that extraordinary properties of light filament induced plasma channel enable the generation of terahertz electromagnetic waves in the direction of laser b ...
... formed by multiple light filaments is able to provide long range guiding of microwave beams without spreading [11]. Recent experiments also show that extraordinary properties of light filament induced plasma channel enable the generation of terahertz electromagnetic waves in the direction of laser b ...
Numerical simulation of diffraction grating alignment and phase noise
... Can apply this process to all derivatives ...
... Can apply this process to all derivatives ...
Novel sol-gel material for fabrication of a long period waveguide
... In summary, we have successfully demonstrated the fabrication of a LPWG filter based on a new kind of UV-tunable sol-gel material using soft-lithography technique, and it had a high temperature sensitivity and wide linear tunable temperature range so that it can be used as a precise thermometer. In ...
... In summary, we have successfully demonstrated the fabrication of a LPWG filter based on a new kind of UV-tunable sol-gel material using soft-lithography technique, and it had a high temperature sensitivity and wide linear tunable temperature range so that it can be used as a precise thermometer. In ...
(FT-IR) Microspectroscopic Measurements of Intact Spheres
... ing the absorption spectrum of the material from recorded data such that the recovered spectra are independent of the sample morphology.4,6–8 One set of approaches today seeks to model the material as an idealized object, such as a sphere, and largely neglects the optical configuration of the micros ...
... ing the absorption spectrum of the material from recorded data such that the recovered spectra are independent of the sample morphology.4,6–8 One set of approaches today seeks to model the material as an idealized object, such as a sphere, and largely neglects the optical configuration of the micros ...
Introduction - Strathprints
... until the work by Schoji et al32 who reviewed the absolute values of the nonlinear coefficients for a large range of materials. The reason for this neglect is that for films or crystal slabs, whose thicknesses are much less than that of the propagating wavelength, or have a refractive index of aroun ...
... until the work by Schoji et al32 who reviewed the absolute values of the nonlinear coefficients for a large range of materials. The reason for this neglect is that for films or crystal slabs, whose thicknesses are much less than that of the propagating wavelength, or have a refractive index of aroun ...
Geometric limits to geometric optical imaging with infinite, planar
... that share a common focal plane) [5] or generalized telescopes made from confocal pairs of inclined elliptical lenses [6]. In addition to changing the direction of transmitted light rays, the telescopic components offset transmitted light rays, but in such a way that miniaturizing the components al ...
... that share a common focal plane) [5] or generalized telescopes made from confocal pairs of inclined elliptical lenses [6]. In addition to changing the direction of transmitted light rays, the telescopic components offset transmitted light rays, but in such a way that miniaturizing the components al ...
Wide-field extended-resolution fluorescence
... While SW-SPRF retains the advantages of SPCE including decreased fluorescence lifetime and thus reduced photobleaching for biological imaging, it does not suffer from low spatial resolution. The PSF of SW-SPRF is four times narrower than typical SPCE. The use of silver instead of gold, together with ...
... While SW-SPRF retains the advantages of SPCE including decreased fluorescence lifetime and thus reduced photobleaching for biological imaging, it does not suffer from low spatial resolution. The PSF of SW-SPRF is four times narrower than typical SPCE. The use of silver instead of gold, together with ...
Waves
... On The Side The wave is an essential unifying concept of modern physics. Matter and energy both share wave properties Take for example what is known as the electron wave partial duality theorem. Which says that an electron can exist as a wave or as a particle. In quantum physics all matter theatric ...
... On The Side The wave is an essential unifying concept of modern physics. Matter and energy both share wave properties Take for example what is known as the electron wave partial duality theorem. Which says that an electron can exist as a wave or as a particle. In quantum physics all matter theatric ...
Anti-reflective coating
An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection. In typical imaging systems, this improves the efficiency since less light is lost. In complex systems such as a telescope, the reduction in reflections also improves the contrast of the image by elimination of stray light. This is especially important in planetary astronomy. In other applications, the primary benefit is the elimination of the reflection itself, such as a coating on eyeglass lenses that makes the eyes of the wearer more visible to others, or a coating to reduce the glint from a covert viewer's binoculars or telescopic sight.Many coatings consist of transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in the beams reflected from the interfaces, and constructive interference in the corresponding transmitted beams. This makes the structure's performance change with wavelength and incident angle, so that color effects often appear at oblique angles. A wavelength range must be specified when designing or ordering such coatings, but good performance can often be achieved for a relatively wide range of frequencies: usually a choice of IR, visible, or UV is offered.