A negative permeability material at red light
... artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range of wavelengths. In addition, a magnetic resonant behavior should be observed in NIMs at this range. The magnetic resonance in any optical NIM is always required to make the real part of the effective refra ...
... artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range of wavelengths. In addition, a magnetic resonant behavior should be observed in NIMs at this range. The magnetic resonance in any optical NIM is always required to make the real part of the effective refra ...
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... randomly perturbed; more precisely, the phase, intensity and direction of the laser wave undergo turbulent fluctuations due to random refractive index fluctuations of the medium, which are mainly caused by temperature fluctuations. We assume that the pressure variations in the hot jet spread at very hi ...
... randomly perturbed; more precisely, the phase, intensity and direction of the laser wave undergo turbulent fluctuations due to random refractive index fluctuations of the medium, which are mainly caused by temperature fluctuations. We assume that the pressure variations in the hot jet spread at very hi ...
Methods and Applications of Optical Holography
... to make positive impression to viewer and can be exploited for advertising purpose. The second reason is that they are easy recognizable by inexperienced user – that allows almost every user to identify them without any equipment – so called “first line inspection”. The third reason is that manufact ...
... to make positive impression to viewer and can be exploited for advertising purpose. The second reason is that they are easy recognizable by inexperienced user – that allows almost every user to identify them without any equipment – so called “first line inspection”. The third reason is that manufact ...
Optical Cavity for the Strontium Lattice Atomic Clock
... TAKAKO HIROKAWA JUN YE UNIVERSITY OF COLORADO, BOULDER ...
... TAKAKO HIROKAWA JUN YE UNIVERSITY OF COLORADO, BOULDER ...
Post-print of: J. Mater. Chem. , 2010, 20, 6408
... order to enhance the resolution of a potential sensing device making use of this effect, but for porous 1DPCs with a limited number of layers, as it is our case, increase of resolution will always be at the expense of the intensity of the diffraction peak. Conclusions We have demonstrated a syntheti ...
... order to enhance the resolution of a potential sensing device making use of this effect, but for porous 1DPCs with a limited number of layers, as it is our case, increase of resolution will always be at the expense of the intensity of the diffraction peak. Conclusions We have demonstrated a syntheti ...
The Four-Quadrant Phase-Mask Coronagraph. I. Principle
... ABSTRACT. We describe a new type of coronagraph, based on the principle of a phase mask as proposed by Roddier and Roddier a few years ago but using an original mask design found by one of us (D. R.), a four-quadrant binary phase mask (0, n) covering the full Ðeld of view at the focal plane. The mut ...
... ABSTRACT. We describe a new type of coronagraph, based on the principle of a phase mask as proposed by Roddier and Roddier a few years ago but using an original mask design found by one of us (D. R.), a four-quadrant binary phase mask (0, n) covering the full Ðeld of view at the focal plane. The mut ...
Electromagnetic forces for an arbitrary optical trapping of a spherical
... missing mechanical measurements in the world of microorganisms and cells that could be correlated to biochemical information. The importance of understanding the optical forces in dielectric beads under different incident beam conditions comes from the fact that they are the natural transducer for f ...
... missing mechanical measurements in the world of microorganisms and cells that could be correlated to biochemical information. The importance of understanding the optical forces in dielectric beads under different incident beam conditions comes from the fact that they are the natural transducer for f ...
After referees Review article final_FINAL3
... commercially available instruments, and utilises a single element detector which records an infrared spectrum from an individual location on the sample. Best suited to interrogating small localised regions of interest, spectra with high signal to noise ratios can routinely be acquired. Spatial resol ...
... commercially available instruments, and utilises a single element detector which records an infrared spectrum from an individual location on the sample. Best suited to interrogating small localised regions of interest, spectra with high signal to noise ratios can routinely be acquired. Spatial resol ...
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... In this Letter, we show that quantitative phase imaging of thin slices can be used to spatially map the tissue in terms of its scattering properties. Specifically, we establish mathematical relations between the phase map ϕðx; yÞ associated with a tissue slice of thickness L ≪ ls (see Fig. 1) and sc ...
... In this Letter, we show that quantitative phase imaging of thin slices can be used to spatially map the tissue in terms of its scattering properties. Specifically, we establish mathematical relations between the phase map ϕðx; yÞ associated with a tissue slice of thickness L ≪ ls (see Fig. 1) and sc ...
prezantacia aj
... one billionth of a meter (0.000000001 meter) in length. Wavelengths that are not visible to the human eye are used to transmit data over optical fiber. These wavelengths are slightly longer than red light and are called infrared light. Infrared light is used in TV remote controls. The wavelength of ...
... one billionth of a meter (0.000000001 meter) in length. Wavelengths that are not visible to the human eye are used to transmit data over optical fiber. These wavelengths are slightly longer than red light and are called infrared light. Infrared light is used in TV remote controls. The wavelength of ...
NSS-MIC 2009 Conference Record Template
... were aiming at timing resolution in the 100ps range. Next section of this paper will discuss how PhCs can be used to modify the balance of the number of photons distributed in the different propagation modes and what gain in timing resolution can be expected with a proper design. Section III present ...
... were aiming at timing resolution in the 100ps range. Next section of this paper will discuss how PhCs can be used to modify the balance of the number of photons distributed in the different propagation modes and what gain in timing resolution can be expected with a proper design. Section III present ...
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... 1. Huygens’ principle 2. Fermat’s principle 3. Interference of all possible paths of light wave from source to observer — it results in destructive interference everywhere except extrema of phase (where interference is constructive)—which become actual paths. 4. Application of the general bounda ...
... 1. Huygens’ principle 2. Fermat’s principle 3. Interference of all possible paths of light wave from source to observer — it results in destructive interference everywhere except extrema of phase (where interference is constructive)—which become actual paths. 4. Application of the general bounda ...
24.1 Physics 6C Geometrical Optics
... can’t draw the ray through the focal point. Instead we pretend the ray came from the focal point and passed through the object on its way to the mirror, then bounced off flat. The outgoing rays do not intersect! So we have to trace them backwards to find their intersection point behind the mirror. T ...
... can’t draw the ray through the focal point. Instead we pretend the ray came from the focal point and passed through the object on its way to the mirror, then bounced off flat. The outgoing rays do not intersect! So we have to trace them backwards to find their intersection point behind the mirror. T ...
485-146 - Wseas.us
... Fig. 3a shows the spectral transfer function of a simple homogeneous holographic Bragg grating in a LiNbO3 photorefractive waveguide. The light intensity transmitted through the waveguide versus wavelength was measured using the sweeping mode of operation of a tunable semiconductor laser (PRO 800). ...
... Fig. 3a shows the spectral transfer function of a simple homogeneous holographic Bragg grating in a LiNbO3 photorefractive waveguide. The light intensity transmitted through the waveguide versus wavelength was measured using the sweeping mode of operation of a tunable semiconductor laser (PRO 800). ...
WAVE OPTICS Jaan Kalda 1 Basics. Double slit diffraction.
... So, at our infinitely-remote-screen, we have two waves picture without any interference stripes. a1 (l1 )eikl1 and a2 (l2 )eikl2 adding up. The relative difference So, as long as we are not studying phenomena at ultra-short between l1 and l2 is small; hence, the dependence of the wave time-scale (at ...
... So, at our infinitely-remote-screen, we have two waves picture without any interference stripes. a1 (l1 )eikl1 and a2 (l2 )eikl2 adding up. The relative difference So, as long as we are not studying phenomena at ultra-short between l1 and l2 is small; hence, the dependence of the wave time-scale (at ...
Measurement of the dispersion of air and of refractive index
... obtain a weakly focused beam with a relatively long Rayleigh range, which yielded a second harmonic intensity from the second source (S2 in Fig. 1) approximately constant (see Section 3). The first nonlinear source (S1) was mounted on a fixed stage while the second was placed on a motorized translat ...
... obtain a weakly focused beam with a relatively long Rayleigh range, which yielded a second harmonic intensity from the second source (S2 in Fig. 1) approximately constant (see Section 3). The first nonlinear source (S1) was mounted on a fixed stage while the second was placed on a motorized translat ...
Spatial amplitude and phase modulation using commercial twisted
... or a suitable subset, follows these two requirements. The setup used to decouple the phase and amplitude modulation is shown in Fig. 2. A monochromatic beam of light at a wavelength of 532 nm is incident normal to the SLM surface. The modulated light is reflected from the SLM. We choose an observati ...
... or a suitable subset, follows these two requirements. The setup used to decouple the phase and amplitude modulation is shown in Fig. 2. A monochromatic beam of light at a wavelength of 532 nm is incident normal to the SLM surface. The modulated light is reflected from the SLM. We choose an observati ...
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... the proximity of a plasmonic nanostructure can give us valuable basic information about optical properties of that structure, valuable for diverse applications. The near−field's complicated pattern contains both, the components able to propagate and components confined to the surface and damped outs ...
... the proximity of a plasmonic nanostructure can give us valuable basic information about optical properties of that structure, valuable for diverse applications. The near−field's complicated pattern contains both, the components able to propagate and components confined to the surface and damped outs ...
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... Note that g can be estimated directly from the angular scattering data via its definition (6). However, because of the limited angular range measured, g tends to be overestimated by this method, and thus, the GK fit offers a more reliable alternative. The representative fitting plots for each sample ...
... Note that g can be estimated directly from the angular scattering data via its definition (6). However, because of the limited angular range measured, g tends to be overestimated by this method, and thus, the GK fit offers a more reliable alternative. The representative fitting plots for each sample ...
Observation of optical polarization Möbius strips
... the total electric energy density distribution at the focus (26). We used a nanoprobe-based reconstruction technique to experimentally probe and reconstruct the electric field distributions generated in the focal plane, allowing the optical polarization Möbius strips hidden in this complex field str ...
... the total electric energy density distribution at the focus (26). We used a nanoprobe-based reconstruction technique to experimentally probe and reconstruct the electric field distributions generated in the focal plane, allowing the optical polarization Möbius strips hidden in this complex field str ...
Heidelberg Retina Tomograph - HRT
... In a confocal optical system as shown in figure 2, a small diaphragm is placed in front of the detector at a location which is optically conjugated to the focal plane of the illuminating system. The effect of this confocal pinhole is as follows: such light reflected from the object at the focal plan ...
... In a confocal optical system as shown in figure 2, a small diaphragm is placed in front of the detector at a location which is optically conjugated to the focal plane of the illuminating system. The effect of this confocal pinhole is as follows: such light reflected from the object at the focal plan ...
1 Basic Optics - Wiley-VCH
... to construct the position of images and their magnification formed by optical instruments. In Section 1.4, we will discuss image formation by optical systems using the concept of light rays. However, they cannot be used to estimate, for example, the ultimate resolution of the instruments since this i ...
... to construct the position of images and their magnification formed by optical instruments. In Section 1.4, we will discuss image formation by optical systems using the concept of light rays. However, they cannot be used to estimate, for example, the ultimate resolution of the instruments since this i ...
Optical fibers are not affected by interference
... The majority of telephone calls and internet traffic at some stage in their journey will be transmitted along an optical fiber. Why has the development of fibers been given so much attention by the scientific community when we have alternatives? The main reason is bandwidth – fibers can carry an ext ...
... The majority of telephone calls and internet traffic at some stage in their journey will be transmitted along an optical fiber. Why has the development of fibers been given so much attention by the scientific community when we have alternatives? The main reason is bandwidth – fibers can carry an ext ...
Get PDF - OSA Publishing
... free image, a sufficient condition to have a good final meridional image is that object point (the slit center) and both final and intermediate images lie on the Rowland circle of each element. This is the case for both mirrors and grating being concentric provided that the object point is located o ...
... free image, a sufficient condition to have a good final meridional image is that object point (the slit center) and both final and intermediate images lie on the Rowland circle of each element. This is the case for both mirrors and grating being concentric provided that the object point is located o ...
Stereochemistry at Tetrahedral Centers
... hand. Your mirror image raises his or her left hand. • You can test whether two objects are identical by seeing if they are superimposable. • Chirality is important in molecules. – Because two chiral molecules are mirror images, they will have many identical properties, but because they are not iden ...
... hand. Your mirror image raises his or her left hand. • You can test whether two objects are identical by seeing if they are superimposable. • Chirality is important in molecules. – Because two chiral molecules are mirror images, they will have many identical properties, but because they are not iden ...
Microscopy
Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of microscopy: optical, electron, and scanning probe microscopy.Optical and electron microscopy involve the diffraction, reflection, or refraction of electromagnetic radiation/electron beams interacting with the specimen, and the collection of the scattered radiation or another signal in order to create an image. This process may be carried out by wide-field irradiation of the sample (for example standard light microscopy and transmission electron microscopy) or by scanning of a fine beam over the sample (for example confocal laser scanning microscopy and scanning electron microscopy). Scanning probe microscopy involves the interaction of a scanning probe with the surface of the object of interest. The development of microscopy revolutionized biology and remains an essential technique in the life and physical sciences.