Channeling of neutral particles in micro
... Another area of X-ray optics that is being actively researched is multilayer X-ray optics, whose operation is based on interference reflection of X-rays from multilayer coatings [26]. Multilayer interference structures consist of alternating substances that have different dielectric constants, with ...
... Another area of X-ray optics that is being actively researched is multilayer X-ray optics, whose operation is based on interference reflection of X-rays from multilayer coatings [26]. Multilayer interference structures consist of alternating substances that have different dielectric constants, with ...
reflectance measurement and modelling of high reflectivity
... is the maximum amount of light that can be reflected by the sample and can not be increased by increase film thickness or smoothness. Reflectance measurements are typically divided into two categories, which are internal reflectance measurement by using an attenuated total reflectance (ATR) element ...
... is the maximum amount of light that can be reflected by the sample and can not be increased by increase film thickness or smoothness. Reflectance measurements are typically divided into two categories, which are internal reflectance measurement by using an attenuated total reflectance (ATR) element ...
Effect of fluoro-polycarbonates containing aliphatic
... materials have been intensively investigated due to their potential applications in optical waveguides because of their excellent characteristics4 such as low optical loss, high extinction ratio, small cubage, easy integration, high thermal and environmental stability, and exible refractive index c ...
... materials have been intensively investigated due to their potential applications in optical waveguides because of their excellent characteristics4 such as low optical loss, high extinction ratio, small cubage, easy integration, high thermal and environmental stability, and exible refractive index c ...
The Scintillation Index In Moderate To Strong Turbulence
... Note that both (13) and (14) do not naturally occur, but are mathematical limits used in certain scenarios instead of a Gaussian beam profile due to their simplicity. As it propagates along z, the spherical wave is approximated by [1] U 0 ( r, z ) ≅ ...
... Note that both (13) and (14) do not naturally occur, but are mathematical limits used in certain scenarios instead of a Gaussian beam profile due to their simplicity. As it propagates along z, the spherical wave is approximated by [1] U 0 ( r, z ) ≅ ...
Laser Medicine and Medical Imaging – J. G. Fujimoto
... breast. Other applications include optical imaging in scenarios where excisional biopsy is hazardous, and in surgical guidance such as in cryosurgery or interstitial photodynamic therapy. We have developed a prototype of an interstitial imaging needle for OCT that has a diameter as small as 27 Gauge ...
... breast. Other applications include optical imaging in scenarios where excisional biopsy is hazardous, and in surgical guidance such as in cryosurgery or interstitial photodynamic therapy. We have developed a prototype of an interstitial imaging needle for OCT that has a diameter as small as 27 Gauge ...
Distance Sensing with Dynamic Speckles
... Distance (along with time) is one of the most important features of our world, reflecting the essence of the space-time continuum. In animated nature even before the arrival of homo sapiens, distance and size were central concerns in the successful evolution and survival of living beings in a hostil ...
... Distance (along with time) is one of the most important features of our world, reflecting the essence of the space-time continuum. In animated nature even before the arrival of homo sapiens, distance and size were central concerns in the successful evolution and survival of living beings in a hostil ...
MEMS Corner Cube Retroreflectors for Free-Space
... performance of an ideal CCR as well as one with non-ideal characteristics. This allows the designer to determine specifications for the CCRs in order to meet the system requirements. This paper also presents the design issues relevant to fabricating CCRs in the commercial MCNC MUMPS process. The des ...
... performance of an ideal CCR as well as one with non-ideal characteristics. This allows the designer to determine specifications for the CCRs in order to meet the system requirements. This paper also presents the design issues relevant to fabricating CCRs in the commercial MCNC MUMPS process. The des ...
Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors
... aperture (NA) (0.4–0.5) is higher than silica-based fiber (0.1–0.28) and the attenuation of POF is around of 1 dB/m at 650 nm. The sensor system using the microstructure polymer optical fiber was described in [31]. Chalcogenide fibers were developed for middle IR spectral range up to 10.6 µm—the wav ...
... aperture (NA) (0.4–0.5) is higher than silica-based fiber (0.1–0.28) and the attenuation of POF is around of 1 dB/m at 650 nm. The sensor system using the microstructure polymer optical fiber was described in [31]. Chalcogenide fibers were developed for middle IR spectral range up to 10.6 µm—the wav ...
labs for the photon/photon2 experiment kit
... 1. Look through the grating at each of the light sources EXCEPT the laser. To see the spectrum, look through the grating to either side of the light source. Note that more than one complete spectrum pattern may be visible. Focus on one of these patterns and record how many colors are visible. Descri ...
... 1. Look through the grating at each of the light sources EXCEPT the laser. To see the spectrum, look through the grating to either side of the light source. Note that more than one complete spectrum pattern may be visible. Focus on one of these patterns and record how many colors are visible. Descri ...
Full text - Simon Fraser University
... Single measurements of the peak intensity as a function of the difference of the peak frequencies in E12g (black) and A1g (red) modes for MoS2 on gel (a) and on wax (b). The thickness of 1-4 layers and bulk were confirmed. As for thicker layers, the thickness of layers were roughly determined by the c ...
... Single measurements of the peak intensity as a function of the difference of the peak frequencies in E12g (black) and A1g (red) modes for MoS2 on gel (a) and on wax (b). The thickness of 1-4 layers and bulk were confirmed. As for thicker layers, the thickness of layers were roughly determined by the c ...
Photonic Lanterns
... lantern [4,5]. This is an optical fibre device that couples light from a multimode fibre (MMF) to single-mode fibres (SMFs) or single-mode cores, and vice versa. The capability of coupling light from a multimode fibre to a single-mode system in which the light is propagating in several Gaussian mode ...
... lantern [4,5]. This is an optical fibre device that couples light from a multimode fibre (MMF) to single-mode fibres (SMFs) or single-mode cores, and vice versa. The capability of coupling light from a multimode fibre to a single-mode system in which the light is propagating in several Gaussian mode ...
Fabrication of concave silicon micro-mirrors
... controlled, unlike the random mirror fabrication by trapping bubbles in borosilicate [6]. The diameters may be very well controlled as well since it does not increase further once the two etch fronts meet under the irradiated Si annulus. The accuracy in determining both the location and diameters of ...
... controlled, unlike the random mirror fabrication by trapping bubbles in borosilicate [6]. The diameters may be very well controlled as well since it does not increase further once the two etch fronts meet under the irradiated Si annulus. The accuracy in determining both the location and diameters of ...
Diffuse optical imaging
... absorption spectra of oxy- and deoxyhaemoglobin (HbO and HHb, respectively) to assess blood oxygenation. This demonstrated that biomedical optics could provide clinically useful information by examination of the absorption of tissue, provided that the confounding effects of scatter were minimized, b ...
... absorption spectra of oxy- and deoxyhaemoglobin (HbO and HHb, respectively) to assess blood oxygenation. This demonstrated that biomedical optics could provide clinically useful information by examination of the absorption of tissue, provided that the confounding effects of scatter were minimized, b ...
ImmersedFoil Method for Measuring Shock Wave Profiles in Solids
... shock fronts or of the heads of rarefaction fans in the liquid is determined from the speed with which these intersect the inclined foil. The particle velocity associated with one or more shock or rarefaction waves is determined from the displacements of the grid images as reflected in the inclined ...
... shock fronts or of the heads of rarefaction fans in the liquid is determined from the speed with which these intersect the inclined foil. The particle velocity associated with one or more shock or rarefaction waves is determined from the displacements of the grid images as reflected in the inclined ...
Photonic Crystal Cavities - Nanophotonics and integrated optics
... Photonic crystals are artificial materials whose dielectric function exhibits spatial periodicity in one, two or three dimensions. In this paper, two dimensional periodic structures with finite extension into the third dimension, so called photonic crystal slabs, will be considered. Two dimensional ...
... Photonic crystals are artificial materials whose dielectric function exhibits spatial periodicity in one, two or three dimensions. In this paper, two dimensional periodic structures with finite extension into the third dimension, so called photonic crystal slabs, will be considered. Two dimensional ...
PDF
... requires a high power pump laser which makes the light source expensive and bulky. In addition, the microstructure fiber requires a free space coupling to the interferometer, which limits the optical power at the sample and the stability of the system. Finally, in order to achieve broad bandwidth, h ...
... requires a high power pump laser which makes the light source expensive and bulky. In addition, the microstructure fiber requires a free space coupling to the interferometer, which limits the optical power at the sample and the stability of the system. Finally, in order to achieve broad bandwidth, h ...
Optical Indicatrix
... single 2-fold rotation axis and/or is perpendicular to the single mirror plane. The a axes and c axes are perpendicular to b and intersect in an obtuse angle. One indicatrix axis, which could either be X, Y or Z, is always parallel to the b crystallographic axis, and the other two lie in the {010} p ...
... single 2-fold rotation axis and/or is perpendicular to the single mirror plane. The a axes and c axes are perpendicular to b and intersect in an obtuse angle. One indicatrix axis, which could either be X, Y or Z, is always parallel to the b crystallographic axis, and the other two lie in the {010} p ...
High-Resolution Retinal Imaging using Adaptive Optics in a
... was not a solitary quest and it is the people who were – voluntarily or involuntarily – part of it to whom I owe my gratitude. However, writing a litany of names will only achieve the undesirable effect that nobody will read my acknowledgements; some might just scan through to see whether their name ...
... was not a solitary quest and it is the people who were – voluntarily or involuntarily – part of it to whom I owe my gratitude. However, writing a litany of names will only achieve the undesirable effect that nobody will read my acknowledgements; some might just scan through to see whether their name ...
YZM NI
... A p-polarized monochromatic light of wavelength 632.8 nm from a helium–neon (He–Ne) laser is employed as the monitoring beam. As shown in Fig. 1, the p-polarized light is coupled into the PEG film through a glass prism and a 50 nm thick gold thin film. The glass prism is made of BK7 material with a r ...
... A p-polarized monochromatic light of wavelength 632.8 nm from a helium–neon (He–Ne) laser is employed as the monitoring beam. As shown in Fig. 1, the p-polarized light is coupled into the PEG film through a glass prism and a 50 nm thick gold thin film. The glass prism is made of BK7 material with a r ...
“Superluminal” Pulse Propagation Dynamics by George M. Gehring
... Plots of time-averaged energy density as a function of position for freespace and barrier regions. In the top panel, a pulse propagates through a length L of free space, and has the usual free-space energy density ⟨U0 ⟩. In the bottom panel, the section of free space is replaced with a barrier regio ...
... Plots of time-averaged energy density as a function of position for freespace and barrier regions. In the top panel, a pulse propagates through a length L of free space, and has the usual free-space energy density ⟨U0 ⟩. In the bottom panel, the section of free space is replaced with a barrier regio ...
Surface plasmon resonance microscopy
Surface Plasmon Resonance Microscopy (SPRM) is a label free analytical tool that combines the surface plasmon resonance of metallic surfaces with imaging of the metallic surface.The heterogeneity of the refractive index of the metallic surface imparts high contrast images, caused by the shift in the resonance angle.SPRM can achieve a thickness sensitivity of few tenths of nanometer and lateral resolution achieves values of micrometer scale.SPRM is used to characterize surfaces, self-assembled monolayers, multilayer films, metal nanoparticles, oligonucleotides arrays, binding and reduction reactions.Surface Plasmon polaritons are surface electromagnetic waves coupled to oscillating free electrons of a metallic surface that propagate along a metal/dielectric interface.Since polaritons are highly sensitive to small changes in the refractive index of the metallic material,it can be used as a biosensing tool that does not require labeling. SPRM measurements can be made in real-time.Wang and collaborators studied the binding kinetics of membrane proteins in single cells.The experimental setup of an SPRM can be seen in the Figure 1, where an adherent cell is grown on a gold film and placed in an inverted microscope, p-polarized light was used to create the surface plasmons on the gold film and a CCD camera was used to create the SPR image.