Design of an integrated optical source of twin photons Ivan Avrutsky
... optical device for efficient parametric downconversion and polarization-entangled two-photon state engineering. The innovative element of our design is in the combination of the nonlinear optical interaction inside a waveguide and light tunneling between closely routed waveguides. In the proposed de ...
... optical device for efficient parametric downconversion and polarization-entangled two-photon state engineering. The innovative element of our design is in the combination of the nonlinear optical interaction inside a waveguide and light tunneling between closely routed waveguides. In the proposed de ...
Wavefront Aberration - University of Arizona
... point falls at the edge of the aperture (d/2 ω = l), the intensity of the diffraction pattern drops to l/e2 of its maximum value at a radius approximately equal to 3/4 of the Airy disk radius. Figure 11 is a plot of Eq. (9) for different values of 2w /d. III. SPHERICAL WAVEFRONT, DEFOCUS, AND LATERA ...
... point falls at the edge of the aperture (d/2 ω = l), the intensity of the diffraction pattern drops to l/e2 of its maximum value at a radius approximately equal to 3/4 of the Airy disk radius. Figure 11 is a plot of Eq. (9) for different values of 2w /d. III. SPHERICAL WAVEFRONT, DEFOCUS, AND LATERA ...
Light manipulation with encoded plasmonic nanostructures Chenglong Zhao , Jiasen Zhang
... can be used to achieve unidirectional SPP excitations. Figure 4a shows the SPP filed recorded with photon scanning tunneling micrographs [47, 50]. The SPPs launched from the left side of the slit are reflected back to the right side, resulting in unidirectional SPP excitation. However, the SPPs refl ...
... can be used to achieve unidirectional SPP excitations. Figure 4a shows the SPP filed recorded with photon scanning tunneling micrographs [47, 50]. The SPPs launched from the left side of the slit are reflected back to the right side, resulting in unidirectional SPP excitation. However, the SPPs refl ...
META`15 New York
... Claire F. Gmachl, is the Eugene Higgins Professor of Electrical Engineering at Princeton University. She is best known for her work in the development of quantum cascade lasers. earned her M.Sc. in Physics from the University of Innsbruck in 1991. She went on to receive her Ph.D. in Electrical Engin ...
... Claire F. Gmachl, is the Eugene Higgins Professor of Electrical Engineering at Princeton University. She is best known for her work in the development of quantum cascade lasers. earned her M.Sc. in Physics from the University of Innsbruck in 1991. She went on to receive her Ph.D. in Electrical Engin ...
diffraction gratings
... 1. An entrance slit or aperture stop. 2. A collimating element to make the rays parallel which pass though one point of the entrance slit or field-stop. This collimator may be a lens, a mirror or an integral part of the dispersing element, as in a concave grating spectrometer. 3. A dispersing elemen ...
... 1. An entrance slit or aperture stop. 2. A collimating element to make the rays parallel which pass though one point of the entrance slit or field-stop. This collimator may be a lens, a mirror or an integral part of the dispersing element, as in a concave grating spectrometer. 3. A dispersing elemen ...
D T U
... they reach the eye. The term comes from the Latin lens, lentis, meaning lentil, and was adopted because of the similarity in the shape. An optical medium is any substance through which light can travel. Most optical media with interest in ophthalmic optics are isotropic, meaning that light travels a ...
... they reach the eye. The term comes from the Latin lens, lentis, meaning lentil, and was adopted because of the similarity in the shape. An optical medium is any substance through which light can travel. Most optical media with interest in ophthalmic optics are isotropic, meaning that light travels a ...
Surplus Shed
... sophisticated light switch. It contains a rectangular array of up to 1.3 million hinge-mounted microscopic mirrors; each of these micromirrors measures less than one-fifth the width of a human hair.White light generated by the bulb passes through a color wheel as it travels to the surface of the DMD ...
... sophisticated light switch. It contains a rectangular array of up to 1.3 million hinge-mounted microscopic mirrors; each of these micromirrors measures less than one-fifth the width of a human hair.White light generated by the bulb passes through a color wheel as it travels to the surface of the DMD ...
Modeling Moiré: Visual Beat Effects in Nature and Optical Metrology
... the second, the semi-major axis was kept the same, but the semi-minor axis was varied, creating a grating that looked like a cat’s eye. Figures 2 (b) and 2 (c) show the screenshots of the M ATHEMATICA output for these cases. Although the two types of gratings themselves appeared to be rather similar ...
... the second, the semi-major axis was kept the same, but the semi-minor axis was varied, creating a grating that looked like a cat’s eye. Figures 2 (b) and 2 (c) show the screenshots of the M ATHEMATICA output for these cases. Although the two types of gratings themselves appeared to be rather similar ...
Fundamentals of Light Microscopy and Electronic Imaging
... how to match filters and fluorescent dyes, choose a camera, and acquire and print a microscope image. Advances in science and technology have also profoundly changed the face of light microscopy over the past ten years. Instead of microscope and film camera, the light microscope is now commonly inte ...
... how to match filters and fluorescent dyes, choose a camera, and acquire and print a microscope image. Advances in science and technology have also profoundly changed the face of light microscopy over the past ten years. Instead of microscope and film camera, the light microscope is now commonly inte ...
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G02F takes
... to the light guide is altered by the application of an external field are classified in G02F. Backlights characterised by the light guides for liquid crystal display panels are classified in G02B 6/0001 - G02B 6/0096. Light amplifying light guides are classified in H01S. Systems for communication ar ...
... to the light guide is altered by the application of an external field are classified in G02F. Backlights characterised by the light guides for liquid crystal display panels are classified in G02B 6/0001 - G02B 6/0096. Light amplifying light guides are classified in H01S. Systems for communication ar ...
Introduction to Diffraction Grating
... Transmission Grating Transmission gratings simplify optical designs and can be beneficial in fixed grating applications such as spectrographs. Thorlabs’ offering of blazed transmission gratings is designed for optimum performance in the visible, UV, or near IR spectrum, with varying dispersiveness. ...
... Transmission Grating Transmission gratings simplify optical designs and can be beneficial in fixed grating applications such as spectrographs. Thorlabs’ offering of blazed transmission gratings is designed for optimum performance in the visible, UV, or near IR spectrum, with varying dispersiveness. ...
Three-dimensional Full-field X
... contribution of that voxel to a particular orientation. Allowing many orientations per each voxel, it blows up the number of unknowns By minimizing the l1-norm of the 6D representation, sparse solutions are prioritized, thereby improving the ability to reconstruct using far more unknowns than equati ...
... contribution of that voxel to a particular orientation. Allowing many orientations per each voxel, it blows up the number of unknowns By minimizing the l1-norm of the 6D representation, sparse solutions are prioritized, thereby improving the ability to reconstruct using far more unknowns than equati ...
Modern Optical Engineering
... course of study and that in the whole country there were less than a dozen potential employers for a graduate optical engineer. Despite the Dean’s gloom-and-doom prognostication, the future turned out amazingly well, and I have thoroughly enjoyed the practice of optical engineering and the people as ...
... course of study and that in the whole country there were less than a dozen potential employers for a graduate optical engineer. Despite the Dean’s gloom-and-doom prognostication, the future turned out amazingly well, and I have thoroughly enjoyed the practice of optical engineering and the people as ...
guide to thin section microscopy - Mineralogical Society of America
... The most simple device to increase the visual angle is a magnifying glass (loupe). It consists of a biconvex lens with a focal length that is smaller than the minimum distance of vision (<250 mm). If an object (A) is placed in the focal point F of the lens, the user sees an enlarged upright image (B ...
... The most simple device to increase the visual angle is a magnifying glass (loupe). It consists of a biconvex lens with a focal length that is smaller than the minimum distance of vision (<250 mm). If an object (A) is placed in the focal point F of the lens, the user sees an enlarged upright image (B ...
Principles, Instrumentation, and Applications of Infrared Multispectral
... somewhat limits applications of the quartz-based AOTFs (Tran and Lu 1995). Furthermore, the collinear configuration renders this type of AOTF difficult to use in multispectral imaging instruments, because the transmitted (undiffracted) light is spatially in the same direction as the diffracted light ...
... somewhat limits applications of the quartz-based AOTFs (Tran and Lu 1995). Furthermore, the collinear configuration renders this type of AOTF difficult to use in multispectral imaging instruments, because the transmitted (undiffracted) light is spatially in the same direction as the diffracted light ...
Principles and techniques of digital holographic microscopy
... One was the powerful coherent source of light in lasers to provide high quality interference contrast. The other, due to Leith and Upatnieks [5–7], was off-axis illumination with a separate reference wave, thus eliminating the problem of the zero-order and twin images of the Gabor’s on-axis configur ...
... One was the powerful coherent source of light in lasers to provide high quality interference contrast. The other, due to Leith and Upatnieks [5–7], was off-axis illumination with a separate reference wave, thus eliminating the problem of the zero-order and twin images of the Gabor’s on-axis configur ...
optical resonances in multilayer structures
... related to the electric and magnetic fields by the dimensionless electric and magnetic susceptibilities χe and χm . The constants of proportionality are called relative electric permittivity ǫr = 1 + χe and relative magnetic permeability µr = 1 + χm . They may depend on the position for inhomogeneou ...
... related to the electric and magnetic fields by the dimensionless electric and magnetic susceptibilities χe and χm . The constants of proportionality are called relative electric permittivity ǫr = 1 + χe and relative magnetic permeability µr = 1 + χm . They may depend on the position for inhomogeneou ...
Coupling effect between two adjacent chiral structure layers
... not existing in natural materials. Metamaterials can be composed of dielectric elements or structured metallic components. A lot of novel applications can be realized by using metamaterials, e.g., cloaking [1], negative refraction [2], and beaming effect [3]. Traditional metamaterials are composed o ...
... not existing in natural materials. Metamaterials can be composed of dielectric elements or structured metallic components. A lot of novel applications can be realized by using metamaterials, e.g., cloaking [1], negative refraction [2], and beaming effect [3]. Traditional metamaterials are composed o ...
Fabrication of Multi-wavelength Optical Reflector using On
... parameters varied for the Reflectivity analysis and also effects of the parameters on Reflectivity are studied. Reflectivity of Sampled Grating array is observed as 99.8% at multiple wavelengths. Such type of Sampled Grating array structure used as a optical reflector for Multichannel Optoelectronic ...
... parameters varied for the Reflectivity analysis and also effects of the parameters on Reflectivity are studied. Reflectivity of Sampled Grating array is observed as 99.8% at multiple wavelengths. Such type of Sampled Grating array structure used as a optical reflector for Multichannel Optoelectronic ...
Design and fabrication of blazed binary diffractive - HAL
... The fabrication of blazed-index diffractive elements through a diffusion process or ion exchange as used for fabricating graded-index lenses or waveguides is difficult because the 2p-phase jumps required at zone extremities are smoothed by the fabrication process. Conversely, artificial dielectric d ...
... The fabrication of blazed-index diffractive elements through a diffusion process or ion exchange as used for fabricating graded-index lenses or waveguides is difficult because the 2p-phase jumps required at zone extremities are smoothed by the fabrication process. Conversely, artificial dielectric d ...
Ultrasonic Testing
... as acoustics. All material substances are comprised of atoms, which may be forced into vibrational motion about their equilibrium positions. Many different patterns of vibrational motion exist at the atomic level; however, most are irrelevant to acoustics and ultrasonic testing. Acoustics is focused ...
... as acoustics. All material substances are comprised of atoms, which may be forced into vibrational motion about their equilibrium positions. Many different patterns of vibrational motion exist at the atomic level; however, most are irrelevant to acoustics and ultrasonic testing. Acoustics is focused ...
Recent Advances in ALON Optical Ceramic
... environmental conditions exist. The high cost of sapphire can be prohibitive, and its an-isotropic mechanical properties make it difficult to fabricate. Furthermore, some applications require windows that are too large or shapes that are too complicated to be made from single crystal sapphire. Alumi ...
... environmental conditions exist. The high cost of sapphire can be prohibitive, and its an-isotropic mechanical properties make it difficult to fabricate. Furthermore, some applications require windows that are too large or shapes that are too complicated to be made from single crystal sapphire. Alumi ...
Properties of a 4Pi confocal fluorescence microscope
... light." 2 The smaller this volume, the better the resolution of the microscope. In the usual confocal and conventional epifluorescence arrangement, the object is illuminated and observed from one side (Fig. 1). The objective lens transforms the illumination wave front into a segment of a spherical w ...
... light." 2 The smaller this volume, the better the resolution of the microscope. In the usual confocal and conventional epifluorescence arrangement, the object is illuminated and observed from one side (Fig. 1). The objective lens transforms the illumination wave front into a segment of a spherical w ...
Replication of Holograms with Corn Syrup by Rubbing
... Figure 2. Absorbance versus wavelength, for a dry corn syrup layer of 10 µm thickness. ...
... Figure 2. Absorbance versus wavelength, for a dry corn syrup layer of 10 µm thickness. ...
An introduction to medical imaging with coherent terahertz
... (Lasch and Naumann 1998). Combinations of any of these parameters are also possible. Combinations of parameters are useful for developing thickness-independent parameters that allow differentiation between time delays due refractive index effects or sample thickness. In many cases the parameters can ...
... (Lasch and Naumann 1998). Combinations of any of these parameters are also possible. Combinations of parameters are useful for developing thickness-independent parameters that allow differentiation between time delays due refractive index effects or sample thickness. In many cases the parameters can ...
Superlens
A practical superlens, or super lens, is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is a feature of conventional lenses and microscopes that limits the fineness of their resolution. Many lens designs have been proposed that go beyond the diffraction limit in some way, but there are constraints and obstacles involved in realizing each of them.