Observation of Localized States in Lieb Photonic
... modulation, as well as the intensity of the profile and the respective input polarization [28]). After this stage, we obtain an amplitude- and phase-modulated light pattern, with a given polarization. In our experiment, light is polarized in the horizontal direction x̂, in order to observe a larger ...
... modulation, as well as the intensity of the profile and the respective input polarization [28]). After this stage, we obtain an amplitude- and phase-modulated light pattern, with a given polarization. In our experiment, light is polarized in the horizontal direction x̂, in order to observe a larger ...
Ellipsometry of light scattering from multilayer coatings
... of microstructural parameters such as interface roughnesses6,7 and bulk inhomogeneities8 –10 within optical multilayers. However, these studies are based mainly on the intensity of the scattered light, whereas phase measurements may provide additional and important information when scattering data a ...
... of microstructural parameters such as interface roughnesses6,7 and bulk inhomogeneities8 –10 within optical multilayers. However, these studies are based mainly on the intensity of the scattered light, whereas phase measurements may provide additional and important information when scattering data a ...
Section 4 Diffraction_handbook of optics
... approximately contained in a cone with its apex at the image of the pinhole. It is necessary to clarify that ‘‘a small enough pinhole’’ means that the optics behind the pinhole is not able to resolve its structure.1 A ‘‘narrowband filter’’ means that its pass band, D… , is much smaller than the mean ...
... approximately contained in a cone with its apex at the image of the pinhole. It is necessary to clarify that ‘‘a small enough pinhole’’ means that the optics behind the pinhole is not able to resolve its structure.1 A ‘‘narrowband filter’’ means that its pass band, D… , is much smaller than the mean ...
9.2. Summary - Stanford Synchrotron Radiation Lightsource
... c) chirped-multilayer compressor optics (these are also efficiency-limited by the beam diameter); d) multilayer-based transmission gratings (with present techniques it is doubtful that the required high-quality and efficient gratings with apertures greater than ~100 m could be built). An additional ...
... c) chirped-multilayer compressor optics (these are also efficiency-limited by the beam diameter); d) multilayer-based transmission gratings (with present techniques it is doubtful that the required high-quality and efficient gratings with apertures greater than ~100 m could be built). An additional ...
Fresnel Diffraction Geometrical optics… …light can`t turn a corner. I
... ZT = 2d2/ • one of the few Fresnel diffraction problems that can be solved analytically • beam pattern alternates between two different fringe patterns http://www.flickr.com/photos/gaeloso/4256791024/ ...
... ZT = 2d2/ • one of the few Fresnel diffraction problems that can be solved analytically • beam pattern alternates between two different fringe patterns http://www.flickr.com/photos/gaeloso/4256791024/ ...
Determination of the dihedral angle errors of a corner cube from its
... In this article by Thomas and Wyant, the authors first draw several parallels to the previous works on characterization of errors in the dihedral angles, and then they extend the discussion to characterization using Twyman-Green interferograms. In their first section on theoretical development the p ...
... In this article by Thomas and Wyant, the authors first draw several parallels to the previous works on characterization of errors in the dihedral angles, and then they extend the discussion to characterization using Twyman-Green interferograms. In their first section on theoretical development the p ...
Dynamical diffraction of atomic matter waves by crystals of light
... derived by summing Huygens elementary spherical waves scattered by lattice planes. The calculation is easy if one ignores multiple scattering. This situation is described by the kinematic diffraction theory @14#. However, we are interested in the regime where multiple scattering occurs and each sing ...
... derived by summing Huygens elementary spherical waves scattered by lattice planes. The calculation is easy if one ignores multiple scattering. This situation is described by the kinematic diffraction theory @14#. However, we are interested in the regime where multiple scattering occurs and each sing ...
Normal-Incidence Photoemission Electron Microscopy (NI
... interference. As this background intensity is integrated in time by the detector, it smears out, and any wave characteristic is 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 n ...
... interference. As this background intensity is integrated in time by the detector, it smears out, and any wave characteristic is 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 n ...
Enhanced pyroelectric crystal D—D nuclear fusion
... exhibits spontaneous polarization which changes when the crystal is heated or cooled. (These crystals are usually cut such that the maximum dipole moment from each unit cell is perpendicular to the flat surfaces, the −z and +z faces.) Spontaneous polarization, Ps , is defined as the dipole moment per ...
... exhibits spontaneous polarization which changes when the crystal is heated or cooled. (These crystals are usually cut such that the maximum dipole moment from each unit cell is perpendicular to the flat surfaces, the −z and +z faces.) Spontaneous polarization, Ps , is defined as the dipole moment per ...
LETTERS
... trapping fields, can be used to manipulate condensates and to study fundamental aspects of their properties. For example, it is possible to measure the coherence time of a BEC. Atoms may be launched along a principal axis, so that the diffracted wave packet will return to the condensate after an int ...
... trapping fields, can be used to manipulate condensates and to study fundamental aspects of their properties. For example, it is possible to measure the coherence time of a BEC. Atoms may be launched along a principal axis, so that the diffracted wave packet will return to the condensate after an int ...
Large acceptance of non-collinear phase
... can simulate anomalous dispersion environment [5, 18] when the phase-matching type is ooe. The x-z plane of the crystal is placed on the rotating stage, the center wavelength we use as the fundamental wave is 1064 nm with 4 ns pulse width and 20 Hz repetition rate. The vertically-polarized (ordinary ...
... can simulate anomalous dispersion environment [5, 18] when the phase-matching type is ooe. The x-z plane of the crystal is placed on the rotating stage, the center wavelength we use as the fundamental wave is 1064 nm with 4 ns pulse width and 20 Hz repetition rate. The vertically-polarized (ordinary ...
Diffracting fractals: new paradigms in linear wave physics
... Fourier domain. If such a spatial system could be realized, then each temporal information bit could be replaced by a gigantic binary string stored within decades of fractal scales. ...
... Fourier domain. If such a spatial system could be realized, then each temporal information bit could be replaced by a gigantic binary string stored within decades of fractal scales. ...
Catalyst characterization: characterization techniques
... pressure) not too far from the reaction ones. Moreover they can be used to study many different characteristics and to choose from them those relevant for the case under investigation. These advantages, joined to the low and medium cost of the instruments required, explain the wide diffusion of thes ...
... pressure) not too far from the reaction ones. Moreover they can be used to study many different characteristics and to choose from them those relevant for the case under investigation. These advantages, joined to the low and medium cost of the instruments required, explain the wide diffusion of thes ...
Generation and Application of Bessel Beams in Electron Microscopy
... be achieved by alternating thick fringes made from opaque material with regions of high transparency. By contrast, phase modulation is carried out by varying the transverse thickness profile of a nearly transparent material, so as to produce disparities in the electro-optical path lengths experience ...
... be achieved by alternating thick fringes made from opaque material with regions of high transparency. By contrast, phase modulation is carried out by varying the transverse thickness profile of a nearly transparent material, so as to produce disparities in the electro-optical path lengths experience ...
2. - ACMAC
... Excitation along an area (vs. line definition of transverse phase in free-space) Short plasmon propagation and measurement distance (<100 microns), thus requiring fast acceleration (=non-paraxial conditions) Flexible beam shapers (e.g. Spatial Light Modulators) do not exist ...
... Excitation along an area (vs. line definition of transverse phase in free-space) Short plasmon propagation and measurement distance (<100 microns), thus requiring fast acceleration (=non-paraxial conditions) Flexible beam shapers (e.g. Spatial Light Modulators) do not exist ...
Ultrafast Acoustic Phonon Ballistics in Semiconductor Heterostructures
... composed of a subpicosecond spike in the response, followed by a persistent deflection. This response originates from the GaAs cap layer which is frequently ignored because of its proximity to surface states. The initial spike can arise from optical nonlinear mixing in the reduced symmetry of the su ...
... composed of a subpicosecond spike in the response, followed by a persistent deflection. This response originates from the GaAs cap layer which is frequently ignored because of its proximity to surface states. The initial spike can arise from optical nonlinear mixing in the reduced symmetry of the su ...
Highly doped InP as a low loss plasmonic material for
... to many applications by means of intensely localized electric field at the interface and enhanced light-matter interactions. Plasmonics for the mid-IR wavelength region offers unique functionalities for thermal imaging, due to the peak emission wavelength for the temperatures ranging from 200 to 140 ...
... to many applications by means of intensely localized electric field at the interface and enhanced light-matter interactions. Plasmonics for the mid-IR wavelength region offers unique functionalities for thermal imaging, due to the peak emission wavelength for the temperatures ranging from 200 to 140 ...
Sructural and chemisorption properties of metallic surfaces and metallic overlayers
... Al(110) and Ni on W(110)) and the hydrogen interaction with two clean metal surfaces (Nb(110) and W(110)) have been studied using various surface analytical techniques. The results for the Pd/Al system show that the Pd film grows on Al(110) in a layer-by-layer mode. The binding energies of the Pd 4d ...
... Al(110) and Ni on W(110)) and the hydrogen interaction with two clean metal surfaces (Nb(110) and W(110)) have been studied using various surface analytical techniques. The results for the Pd/Al system show that the Pd film grows on Al(110) in a layer-by-layer mode. The binding energies of the Pd 4d ...
Path-reversed substrate-guided- wave optical interconnects for
... analysis with rigorous coupled-wave analysis is planned for another publication. Figure 6 shows the experimental results for a fourchannel WDDM operating at 796, 798, 800, and 802 nm, for which the bandwidth of the device can accommodate all four channels, as shown in Fig. 5, while maintaining a 2-n ...
... analysis with rigorous coupled-wave analysis is planned for another publication. Figure 6 shows the experimental results for a fourchannel WDDM operating at 796, 798, 800, and 802 nm, for which the bandwidth of the device can accommodate all four channels, as shown in Fig. 5, while maintaining a 2-n ...
Temporal evolution of the angular response of a PVA/acrylamide photopolymer
... while spatial filtering was ensured. The object and reference beams were recombined at the sample at an angle of 16.8° to the normal with an appropriate set of mirrors, and the spatial frequency obtained was 1125 lines/mm. The working intensity at 514 nm was 5 mW/cm2. The diffracted and transmitted ...
... while spatial filtering was ensured. The object and reference beams were recombined at the sample at an angle of 16.8° to the normal with an appropriate set of mirrors, and the spatial frequency obtained was 1125 lines/mm. The working intensity at 514 nm was 5 mW/cm2. The diffracted and transmitted ...
Reflection high-energy electron diffraction
Reflection high-energy electron diffraction (RHEED) is a technique used to characterize the surface of crystalline materials. RHEED systems gather information only from the surface layer of the sample, which distinguishes RHEED from other materials characterization methods that also rely on diffraction of high-energy electrons. Transmission electron microscopy, another common electron diffraction method samples the bulk of the sample due to the geometry of the system. Low-energy electron diffraction (LEED) is also surface sensitive, but LEED achieves surface sensitivity through the use of low energy electrons.