The Focusing and Talbot Effect of Periodic Arrays of Metallic

... an investigation using an output medium with a higher refractive index, which is rarely discussed in publications. The focusing capability of the periodic arrays of metallic nanoapertures in a high-index medium shows potentials for immersion lithography [26] and some optofluidic applications [27, 28 ...

... an investigation using an output medium with a higher refractive index, which is rarely discussed in publications. The focusing capability of the periodic arrays of metallic nanoapertures in a high-index medium shows potentials for immersion lithography [26] and some optofluidic applications [27, 28 ...

3 PROGRAMMABLE APODIZERS AND FRESNEL LENSES pupils

... characteristics of the PSF (apodization, hyperresolution) and the behavior along the axis (increase of the depth of focus, multifoci) [She88,Yzu90]. Analytical expressions for the distributions of amplitude and intensity on the point spread function (PSF) are obtained only for some residual aberrati ...

... characteristics of the PSF (apodization, hyperresolution) and the behavior along the axis (increase of the depth of focus, multifoci) [She88,Yzu90]. Analytical expressions for the distributions of amplitude and intensity on the point spread function (PSF) are obtained only for some residual aberrati ...

96-ws9-reg-temp - School of Physics

... The equation for simple harmonic motion is given by x = Asin(t). The speed is given by v = A cos(t). At the lowest point the speed is a maximum (t = 0), hence v = A = 2.8 s-1 0.15 m = 0.42 m.s-1. b. The acceleration is a = dv/dt = -2A sin(t). At the end of its path the acceleration is a maxi ...

... The equation for simple harmonic motion is given by x = Asin(t). The speed is given by v = A cos(t). At the lowest point the speed is a maximum (t = 0), hence v = A = 2.8 s-1 0.15 m = 0.42 m.s-1. b. The acceleration is a = dv/dt = -2A sin(t). At the end of its path the acceleration is a maxi ...

Waves and Optics - School of Physics

... The equation for simple harmonic motion is given by x = Asin(ωt). The speed is given by v = ωA cos(ωt). At the lowest point the speed is a maximum (t = 0), hence v = ωA = 2.8 s-1 × 0.15 m = 0.42 m.s-1. b. The acceleration is a = dv/dt = -ω2A sin(ωt). At the end of its path the acceleration is a maxi ...

... The equation for simple harmonic motion is given by x = Asin(ωt). The speed is given by v = ωA cos(ωt). At the lowest point the speed is a maximum (t = 0), hence v = ωA = 2.8 s-1 × 0.15 m = 0.42 m.s-1. b. The acceleration is a = dv/dt = -ω2A sin(ωt). At the end of its path the acceleration is a maxi ...

Fabrication of Surface Plasmon Resonators by Nanoskiving Single

... light at the nanoscale, but these waveguides suffer from high loss (the propagation length of light in these structures is around 2.5 µm).3,4 In chemically synthesized silver nanowires, this propagation length increases to 10 µm because of their smooth surfaces.1 The low loss of these silver nanowir ...

... light at the nanoscale, but these waveguides suffer from high loss (the propagation length of light in these structures is around 2.5 µm).3,4 In chemically synthesized silver nanowires, this propagation length increases to 10 µm because of their smooth surfaces.1 The low loss of these silver nanowir ...

New initiatives - Major Instrumentation

... – MCAO-fed near-IR imager (science: stellar populations) ...

... – MCAO-fed near-IR imager (science: stellar populations) ...

Distributed Temperature Sensing Using Stimulated

... particularly with development of fiber-grating-fabrication techniques [1], [2]. Based on a coherent scattering mechanism, the fiber gratings can be used as in-fiber reflector or filter for fiber-optic communications and sensors. It is well known that fiber Bragg gratings (FBGs) introduce a contradir ...

... particularly with development of fiber-grating-fabrication techniques [1], [2]. Based on a coherent scattering mechanism, the fiber gratings can be used as in-fiber reflector or filter for fiber-optic communications and sensors. It is well known that fiber Bragg gratings (FBGs) introduce a contradir ...

Determination of the dihedral angle errors of a corner cube from its

... reference plane wave that gives the fringe patterns mentioned in the introduction. An incident ray must undergo a sequence of three reflections in passing through the prism, and each of the six possible reflection sequences is associated with one of the aperture segments. If the three prism faces ar ...

... reference plane wave that gives the fringe patterns mentioned in the introduction. An incident ray must undergo a sequence of three reflections in passing through the prism, and each of the six possible reflection sequences is associated with one of the aperture segments. If the three prism faces ar ...

Design, near-field characterization, and modeling of 45° surface

... still to be checked against the experimental data in order to assess their usefulness as modeling and predicting tools to optimize the elements design. In this work, we have carried out the study of SPP mirrors, specifically SPP-Bragg mirrors, designed to reflect a surface plasmon polariton travelin ...

... still to be checked against the experimental data in order to assess their usefulness as modeling and predicting tools to optimize the elements design. In this work, we have carried out the study of SPP mirrors, specifically SPP-Bragg mirrors, designed to reflect a surface plasmon polariton travelin ...

Resonant-Cavity Light-Emitting Diodes: a review

... planar cavity will in the first place affect the extraction efficiency. The internal intensity distribution is not longer isotropic due to interference effects (or density of states effects). The basics of dipole emission in planar cavities will be shortly reviewed using a classical approach valid i ...

... planar cavity will in the first place affect the extraction efficiency. The internal intensity distribution is not longer isotropic due to interference effects (or density of states effects). The basics of dipole emission in planar cavities will be shortly reviewed using a classical approach valid i ...

Geometrical-optics code for computing the optical

... same calculation for ⫽ 2.0 m shows that N ⫽ 2 is enough for all incidence angles. Glantschnig and Chen33 compared angular scattering diagrams for ⫽ 0.49 m on the basis of the geometrical-optics approximation for N ⫽ 2 with results from exact Mie calculations. They found that for ⌰i ⱕ 60°, the ...

... same calculation for ⫽ 2.0 m shows that N ⫽ 2 is enough for all incidence angles. Glantschnig and Chen33 compared angular scattering diagrams for ⫽ 0.49 m on the basis of the geometrical-optics approximation for N ⫽ 2 with results from exact Mie calculations. They found that for ⌰i ⱕ 60°, the ...

Generation of diffractive optical elements onto a photopolymer using a

... frequency diffractive optical elements (DOEs) from binary amplitude masks [5] onto the photopolymer, with good results. The same technique was used to analyze the suitability of a wide range of holographic recording materials at low spatial frequencies so as to register DOEs and optical correlation ...

... frequency diffractive optical elements (DOEs) from binary amplitude masks [5] onto the photopolymer, with good results. The same technique was used to analyze the suitability of a wide range of holographic recording materials at low spatial frequencies so as to register DOEs and optical correlation ...

Plasmonic Nearfield Scanning Probe with High Transmission

... focus SPPs on a planar metal surface,33-36 special applications on nonplanar samples request new plasmonic focusing devices design with three-dimensional geometries, such as conic or pyramidal SPP lenses. In this paper, we present a design of conic plasmonic lens integrated on the tapered tip of a N ...

... focus SPPs on a planar metal surface,33-36 special applications on nonplanar samples request new plasmonic focusing devices design with three-dimensional geometries, such as conic or pyramidal SPP lenses. In this paper, we present a design of conic plasmonic lens integrated on the tapered tip of a N ...

Methods and Applications of Optical Holography

... recorded separately in sequential order one after another covering most of the hologram surface. When hologram is viewed in white-light the color of each pixel in the image is predetermined by the interference angle between reference and object beams used in recording process therefore image of the ...

... recorded separately in sequential order one after another covering most of the hologram surface. When hologram is viewed in white-light the color of each pixel in the image is predetermined by the interference angle between reference and object beams used in recording process therefore image of the ...

In text you refer to OAP mirrors as 2nd etc, In fig, they are labeled

... bending it into an arc-like pattern. Adjustment of this tilt itself proved one of the more effective means of determining the correct tilt angle for the OAP mirrors due to the observable aberrations introduced by even small initial errors. Simulations predict a spot size of 65 microns at the focal ...

... bending it into an arc-like pattern. Adjustment of this tilt itself proved one of the more effective means of determining the correct tilt angle for the OAP mirrors due to the observable aberrations introduced by even small initial errors. Simulations predict a spot size of 65 microns at the focal ...

Jonesresub

... glimpse of the subtleties and depth of optical phenomena, and exposure to sophisticated equipment. In the understanding of elliptical polarization, there are a number of proposals of experiments to measure it via a rotating polarizer.7–12 Such a simple experiment reveals, for example, a non-intuitiv ...

... glimpse of the subtleties and depth of optical phenomena, and exposure to sophisticated equipment. In the understanding of elliptical polarization, there are a number of proposals of experiments to measure it via a rotating polarizer.7–12 Such a simple experiment reveals, for example, a non-intuitiv ...

Strain-Temperature Discrimination Using Multimode Interference in

... The larger the condition number of the matrix, the larger the upper bound for the relative error. Consequently, for matrices with high condition number, a small relative error in [] can lead to a large relative error in the solution []. In order to have a well-conditioned system, cross-sensitivity ...

... The larger the condition number of the matrix, the larger the upper bound for the relative error. Consequently, for matrices with high condition number, a small relative error in [] can lead to a large relative error in the solution []. In order to have a well-conditioned system, cross-sensitivity ...

Doppler-Free Saturated Absorption Spectroscopy of Rubidium Using a Tunable Diode Laser

... A double photodiode amplifier circuit (JILA ND025AX) was built, set for manual gain adjusting, and tested. The optical equipment needed for saturated absorption spectroscopy was arranged as shown in Figure 2. The optical isolator was aligned to maximize transmission, and the half-wave plate was adj ...

... A double photodiode amplifier circuit (JILA ND025AX) was built, set for manual gain adjusting, and tested. The optical equipment needed for saturated absorption spectroscopy was arranged as shown in Figure 2. The optical isolator was aligned to maximize transmission, and the half-wave plate was adj ...

Physics 136-3: General Physics Lab Laboratory Manual

... methodologies that you learn about in your lectures are not taught because they were first envisioned by famous people, but because they have been observed always to describe the world. For these claims to withstand the test of time (and repeated testing in future scientific work), we must have some ...

... methodologies that you learn about in your lectures are not taught because they were first envisioned by famous people, but because they have been observed always to describe the world. For these claims to withstand the test of time (and repeated testing in future scientific work), we must have some ...

The Theory of Diffraction Tomography

... refractive index distribution. The real part of the refractive index accounts for refraction of light and the imaginary part causes attenuation. Features in the refractive index distribution that are comparable in size to the wavelength of the light cause diffraction, i.e. the wavelike properties of ...

... refractive index distribution. The real part of the refractive index accounts for refraction of light and the imaginary part causes attenuation. Features in the refractive index distribution that are comparable in size to the wavelength of the light cause diffraction, i.e. the wavelike properties of ...

feature articles

... acid (H3BTB) and possess the same SBU type and overall network topology. MOF-520, prepared in the presence of formic acid, contains an inorganic SBU with four aluminiumcoordinated formate ligands without impact on framework connectivity (Fig. 1e). In contrast, these sites are occupied by four additi ...

... acid (H3BTB) and possess the same SBU type and overall network topology. MOF-520, prepared in the presence of formic acid, contains an inorganic SBU with four aluminiumcoordinated formate ligands without impact on framework connectivity (Fig. 1e). In contrast, these sites are occupied by four additi ...

Technical Digest Post-Deadline Papers

... A multi-layer Blu-ray Disc (BD) to increase the recording capacity per disc is considered not to have basic technical difficulties for the optical system because the conventional optical pickup for the single/dual layer disc can be used without needing any changes to its basic optical structure to b ...

... A multi-layer Blu-ray Disc (BD) to increase the recording capacity per disc is considered not to have basic technical difficulties for the optical system because the conventional optical pickup for the single/dual layer disc can be used without needing any changes to its basic optical structure to b ...

Kelley model of photographic process

... Two point objects are “just resolvable just resolvable” (limited by diffraction only) if they are separated by: Two–dimensional systems (rotationally symmetric PSF) ...

... Two point objects are “just resolvable just resolvable” (limited by diffraction only) if they are separated by: Two–dimensional systems (rotationally symmetric PSF) ...

Measuring amplitude and phase in optical fields with

... In order to get sub-wavelength resolution in optical fields, it is crucial to probe high spatial frequencies contained in evanescent waves. To access the evanescent waves, a probe has to be brought close to the surface. “Close” or “near” means smaller than a wavelength (in contrast to “far”) because ...

... In order to get sub-wavelength resolution in optical fields, it is crucial to probe high spatial frequencies contained in evanescent waves. To access the evanescent waves, a probe has to be brought close to the surface. “Close” or “near” means smaller than a wavelength (in contrast to “far”) because ...

In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. The emerging coloration is a form of structural coloration. The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element. Because of this, gratings are commonly used in monochromators and spectrometers.For practical applications, gratings generally have ridges or rulings on their surface rather than dark lines. Such gratings can be either transmissive or reflective. Gratings which modulate the phase rather than the amplitude of the incident light are also produced, frequently using holography.The principles of diffraction gratings were discovered by James Gregory, about a year after Newton's prism experiments, initially with items such as bird feathers. The first man-made diffraction grating was made around 1785 by Philadelphia inventor David Rittenhouse, who strung hairs between two finely threaded screws. This was similar to notable German physicist Joseph von Fraunhofer's wire diffraction grating in 1821.Diffraction can create ""rainbow"" colors when illuminated by a wide spectrum (e.g., continuous) light source. The sparkling effects from the closely spaced narrow tracks on optical storage disks such as CD's or DVDs are an example, while the similar rainbow effects caused by thin layers of oil (or gasoline, etc.) on water are not caused by a grating, but rather by interference effects in reflections from the closely spaced transmissive layers (see Examples, below). A grating has parallel lines, while a CD has a spiral of finely-spaced data tracks. Diffraction colors also appear when one looks at a bright point source through a translucent fine-pitch umbrella-fabric covering. Decorative patterned plastic films based on reflective grating patches are very inexpensive, and are commonplace.