Synopsis by Lori Moore
... measurement capabilities. At NIF they are using phase-shifting interferometer which provides them with a three dimensional representation of the profile of the surface. From this profile they calculate the PSD. 2. Spatial Frequency Regimes of Interest The degradation in the performance of an optic ...
... measurement capabilities. At NIF they are using phase-shifting interferometer which provides them with a three dimensional representation of the profile of the surface. From this profile they calculate the PSD. 2. Spatial Frequency Regimes of Interest The degradation in the performance of an optic ...
1. Introduction - About the journal
... It is evident from Fig. 5 that with decreasing scintillation index (link distance decreasing below 5 km) the difference between both approximations decreases. Although there are a few optical wavelengths suitable for transmission through the atmosphere, FSO designers usually use near-IR spectral win ...
... It is evident from Fig. 5 that with decreasing scintillation index (link distance decreasing below 5 km) the difference between both approximations decreases. Although there are a few optical wavelengths suitable for transmission through the atmosphere, FSO designers usually use near-IR spectral win ...
Note
... The radii of the secondary wavelets are vt , where v is the speed of light in the medium. If the medium is inhomogeneous, then some wavelets expand faster than others, and the wave profile changes. c. Huygens’ construction The new wave front is constructed by drawing circles of radius vt , each ce ...
... The radii of the secondary wavelets are vt , where v is the speed of light in the medium. If the medium is inhomogeneous, then some wavelets expand faster than others, and the wave profile changes. c. Huygens’ construction The new wave front is constructed by drawing circles of radius vt , each ce ...
Bimodal waveguide interferometer device based high sensitive biosensing
... Main types of biofunctionalization processes; physical, covalent, and bioaffinity immobilization. . . . . . . . . . . . . . . . . . . . Refraction of light at the interface between two media of different refractive index, with n2 n1 . . . . . . . . . . . . . . . . . . . . . . Basic waveguides geomet ...
... Main types of biofunctionalization processes; physical, covalent, and bioaffinity immobilization. . . . . . . . . . . . . . . . . . . . Refraction of light at the interface between two media of different refractive index, with n2 n1 . . . . . . . . . . . . . . . . . . . . . . Basic waveguides geomet ...
Graphene Plasmonic Metasurfaces to Steer Infrared Light www.nature.com/scientificreports Zubin Li
... arises from the finite periodicity and non-uniform reflectivity of the metasurface. If we set the incident angle as 15.0°, the reflected angle should be about 29.0°. The simulation result is shown in Fig. 3b, and we can see that the reflected light is again like a plane wave with its phase front til ...
... arises from the finite periodicity and non-uniform reflectivity of the metasurface. If we set the incident angle as 15.0°, the reflected angle should be about 29.0°. The simulation result is shown in Fig. 3b, and we can see that the reflected light is again like a plane wave with its phase front til ...
Achromatic correction of diffractive dispersion in white light SLM
... function t ∝ exp[iΦ(r⊥ , λ0 )], where r⊥ determines the position on an active surface of the SLM and λ0 is the chosen design wavelength. The phase map addressed on the SLM is controlled by the spatial variations of the refractive index n achieved by the applied voltage. The refractive index is adjus ...
... function t ∝ exp[iΦ(r⊥ , λ0 )], where r⊥ determines the position on an active surface of the SLM and λ0 is the chosen design wavelength. The phase map addressed on the SLM is controlled by the spatial variations of the refractive index n achieved by the applied voltage. The refractive index is adjus ...
Analytic design method for optimal imaging: coupling three ray sets
... traverse the path of stationary optical length S= ...
... traverse the path of stationary optical length S= ...
A review of the relationships describing the signal of a Large
... The transmitter and and receiver have finite aperture diameters (Dt and Dt ) which are ’large’ (the meaning of the word large will become clear in the course of this paper). The radiation emitted by the transmitter is scattered by the turbulent medium between the transmitter and the receiver. The re ...
... The transmitter and and receiver have finite aperture diameters (Dt and Dt ) which are ’large’ (the meaning of the word large will become clear in the course of this paper). The radiation emitted by the transmitter is scattered by the turbulent medium between the transmitter and the receiver. The re ...
Influence of polarization direction, incidence angle, and geometry on
... at ε1 = 5. The increased ε1 should reduce the induced charge in the inner surface of the Au shell, which leads to the decreased near field.[24] Finally, we discuss the state when the polarization direction is parallel to the incidence plane. When ζ = π/2, the light with its polarization direction alo ...
... at ε1 = 5. The increased ε1 should reduce the induced charge in the inner surface of the Au shell, which leads to the decreased near field.[24] Finally, we discuss the state when the polarization direction is parallel to the incidence plane. When ζ = π/2, the light with its polarization direction alo ...
Course: Physics 1 Module 3: Optics and Wave Phenomena
... the source in all directions, at a constant speed if the medium is uniform. Due to the medium’s uniformity, the energy in a spherical wave propagates equally in all directions. That is, no one direction is preferred over any other. • It is useful to represent spherical waves with a series of circula ...
... the source in all directions, at a constant speed if the medium is uniform. Due to the medium’s uniformity, the energy in a spherical wave propagates equally in all directions. That is, no one direction is preferred over any other. • It is useful to represent spherical waves with a series of circula ...
Rotating light with light: Generation of helical modes of light by spin
... angular momentum from light to matter or vice versa, but only one species of optical angular momentum could be involved in each transfer. To have an interaction between spin and orbital angular momentum means to have an interaction between polarization and wavefront shape of a light beam. Such an in ...
... angular momentum from light to matter or vice versa, but only one species of optical angular momentum could be involved in each transfer. To have an interaction between spin and orbital angular momentum means to have an interaction between polarization and wavefront shape of a light beam. Such an in ...
Stokes Polarimetry - Hinds Instruments
... polarization state in situations where the linear polarization direction is not initially defined. Thus, two measurements at 45 degrees with respect to each other must be made. This is a requirement of all general purpose polarimeters. With a PEM, there are at least two ways of accomplishing this. T ...
... polarization state in situations where the linear polarization direction is not initially defined. Thus, two measurements at 45 degrees with respect to each other must be made. This is a requirement of all general purpose polarimeters. With a PEM, there are at least two ways of accomplishing this. T ...
Simultaneous trapping of low-index and high
... manner. A conventional optical trap uses a highly focused TEM00 Gaussian beam to attract a high-index particle into the bright focal region of the beam. In contrast, low-index particles are expelled from the beam. Several reports have shown that a doughnut-type (or vortex) beam is more efficient tha ...
... manner. A conventional optical trap uses a highly focused TEM00 Gaussian beam to attract a high-index particle into the bright focal region of the beam. In contrast, low-index particles are expelled from the beam. Several reports have shown that a doughnut-type (or vortex) beam is more efficient tha ...
Normal-Incidence Photoemission Electron Microscopy (NI
... lost. Therefore, such background does not influence the periodicity of the photoelectron yield modulation, which is discussed here. The result of the superposition of the near fields of the SPP and the laser can then be discussed as three principal cases. For the case of positions like the one marke ...
... lost. Therefore, such background does not influence the periodicity of the photoelectron yield modulation, which is discussed here. The result of the superposition of the near fields of the SPP and the laser can then be discussed as three principal cases. For the case of positions like the one marke ...
Atmospheric Optics 1
... (like atmospheric molecules or atoms), the process can be described by Rayleigh-Scattering. The oscillating electric field of the (unpolarized) incoming EM wave moves the electrons and the nucleus of the molecule with respect to each other (depending on the polarizability,α).The molecule becomes a s ...
... (like atmospheric molecules or atoms), the process can be described by Rayleigh-Scattering. The oscillating electric field of the (unpolarized) incoming EM wave moves the electrons and the nucleus of the molecule with respect to each other (depending on the polarizability,α).The molecule becomes a s ...
Observational Astronomy
... Chromatism Difficult making many meter size lenses Heavy Impossible to make segmented lenses ...
... Chromatism Difficult making many meter size lenses Heavy Impossible to make segmented lenses ...
Label-free super-resolution imaging of adenoviruses by submerged
... Demonstration of super-resolution imaging by SMON To demonstrate the super-resolution capability of large-microsphere (100 mm) SMON and to calibrate the imaging system, a Blu-Ray DVD disk with approximately 100-nm line spacing was imaged using an optical microscope (503, NA50.75) with a 100-mm diame ...
... Demonstration of super-resolution imaging by SMON To demonstrate the super-resolution capability of large-microsphere (100 mm) SMON and to calibrate the imaging system, a Blu-Ray DVD disk with approximately 100-nm line spacing was imaged using an optical microscope (503, NA50.75) with a 100-mm diame ...
Optical properties of the human tissue
... This method includes inverse adding-doubling (IAD) method developed by Prahl et al (Prahl S.A., et al. // Appl. Opt., 1993, Vol. 32(4), P. 559-568) and inverse Monte Carlo simulations. The IAD method is widely used in tissue optics for processing the experimental data of spectrophotometry with integ ...
... This method includes inverse adding-doubling (IAD) method developed by Prahl et al (Prahl S.A., et al. // Appl. Opt., 1993, Vol. 32(4), P. 559-568) and inverse Monte Carlo simulations. The IAD method is widely used in tissue optics for processing the experimental data of spectrophotometry with integ ...
Spatial amplitude and phase modulation using commercial twisted
... some limitations. In most LC SLMs the modulation of phase is coupled to a modulation of the polarization. This makes it hard to independently modulate the phase or the amplitude. Several techniques have been proposed to achieve independent spatial phase and amplitude control using an SLM. Examples a ...
... some limitations. In most LC SLMs the modulation of phase is coupled to a modulation of the polarization. This makes it hard to independently modulate the phase or the amplitude. Several techniques have been proposed to achieve independent spatial phase and amplitude control using an SLM. Examples a ...
Light scattering properties for spherical and cylindrical particles: a
... represent the radius of the particle and the wavelength in the surrounding medium, respectively, and by m, the ratio of the refractive indices of the particle and surrounding medium. Absorption by the spherical and cylindrical particles can be considered as well in Mie theory. However, it is not tak ...
... represent the radius of the particle and the wavelength in the surrounding medium, respectively, and by m, the ratio of the refractive indices of the particle and surrounding medium. Absorption by the spherical and cylindrical particles can be considered as well in Mie theory. However, it is not tak ...
Heuristic Green`s function of the time dependent
... solution it can be foreseen to overcome the limits of the DE and to immediately obtain a twofold improvement: (i) the error determined by approximations of the theory would be drastically reduced, therefore modelling by simulations would be more accurate; (ii) measurements carried out in conditions ...
... solution it can be foreseen to overcome the limits of the DE and to immediately obtain a twofold improvement: (i) the error determined by approximations of the theory would be drastically reduced, therefore modelling by simulations would be more accurate; (ii) measurements carried out in conditions ...
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.