``Interaction-free`` imaging - Vienna Center for Quantum Science and
... For most of us, our intuition of how the world works is grounded in everyday experience and so is necessarily classical. Since its earliest days, the field of quantum mechanics has been characterized by predictions and apparent paradoxes that run counter to our natural intuition. However, in remarka ...
... For most of us, our intuition of how the world works is grounded in everyday experience and so is necessarily classical. Since its earliest days, the field of quantum mechanics has been characterized by predictions and apparent paradoxes that run counter to our natural intuition. However, in remarka ...
Effect of ABCD transformations on beam paraxiality
... The concept of paraxiality applied to optical beams refers to how accurate is the paraxial approximation (PA) for describing the propagation of a light beam through a given optical system. The ondulatory foundation of the PA is based on the assumption that the complex amplitude of the field slowly v ...
... The concept of paraxiality applied to optical beams refers to how accurate is the paraxial approximation (PA) for describing the propagation of a light beam through a given optical system. The ondulatory foundation of the PA is based on the assumption that the complex amplitude of the field slowly v ...
A review of metasurfaces: physics and applications
... ones are also able to introduce phase variations to the scattered light associated with Mie resonances (i.e., establishment of standing wave patterns in the dielectric antennas, see the discussion of dielectric metasurfaces in section 5). Generalized optical laws were first demonstrated using V-shap ...
... ones are also able to introduce phase variations to the scattered light associated with Mie resonances (i.e., establishment of standing wave patterns in the dielectric antennas, see the discussion of dielectric metasurfaces in section 5). Generalized optical laws were first demonstrated using V-shap ...
OPTI 517 Image Quality
... Some customers do not express their image quality requirements in terms such as MTF or ensquared energy – They know what they want the optical system to do ...
... Some customers do not express their image quality requirements in terms such as MTF or ensquared energy – They know what they want the optical system to do ...
Lectures 18-20: Diffraction
... where the wave at the center of the aperture is represented by Eo ei kzo -wt and the phase shift of each element of length with respect to that central plane wave is given by e-i kxj sinJ . But we know from integral calculus what to do with this sort of thing when we see it: We take the limit as the ...
... where the wave at the center of the aperture is represented by Eo ei kzo -wt and the phase shift of each element of length with respect to that central plane wave is given by e-i kxj sinJ . But we know from integral calculus what to do with this sort of thing when we see it: We take the limit as the ...
[pdf]
... several experiments have been performed in this area, with encouraging results,10 and basic concepts of wave propagation such as Snell’s law or diffraction from an edge have been experimentally verified.11,12 One important area in this field is the study of multiple-layered dif0740-3232/2001/040821- ...
... several experiments have been performed in this area, with encouraging results,10 and basic concepts of wave propagation such as Snell’s law or diffraction from an edge have been experimentally verified.11,12 One important area in this field is the study of multiple-layered dif0740-3232/2001/040821- ...
Non-linear Optical Microscopy and Spectroscopy for
... field. For example, they are well suited for delivery of DNA into cells [19, 20], they can be used for vehicles for drug delivery and for killing tumorous cells [21, 22, 23, 24]. Recently they have gained interest as contrast enhancers in multiphoton laser scanning microscopy based on their multiphot ...
... field. For example, they are well suited for delivery of DNA into cells [19, 20], they can be used for vehicles for drug delivery and for killing tumorous cells [21, 22, 23, 24]. Recently they have gained interest as contrast enhancers in multiphoton laser scanning microscopy based on their multiphot ...
Evanescent Waves in the Near- and the Far Field
... way, and this can be accounted for by Fresnel reflection and transmission coefficients. The total reflected and refracted fields are then simply superpositions of these partial waves, and the result is again an angular spectrum representation. This yields an exact solution for the radiation field of ...
... way, and this can be accounted for by Fresnel reflection and transmission coefficients. The total reflected and refracted fields are then simply superpositions of these partial waves, and the result is again an angular spectrum representation. This yields an exact solution for the radiation field of ...
What Brown saw, and you can too
... was undertaken by the author least capable in this regard, a theoretical physicist (P.P.), in expectation of uncovering difficulties that a novice might face, and is written in the first person. This is followed by a discussion of Brown’s lens. It closes with an experimental investigation (by B. C.) ...
... was undertaken by the author least capable in this regard, a theoretical physicist (P.P.), in expectation of uncovering difficulties that a novice might face, and is written in the first person. This is followed by a discussion of Brown’s lens. It closes with an experimental investigation (by B. C.) ...
Plasmonic Metamaterials
... physics, material science, engineering, optics and nanoscience. The primary reason for the extensive interest in metamaterials lies in the fact that metamaterials have implemented a wide range of exceptional properties by engineering the internal physical structures of their building blocks. This is ...
... physics, material science, engineering, optics and nanoscience. The primary reason for the extensive interest in metamaterials lies in the fact that metamaterials have implemented a wide range of exceptional properties by engineering the internal physical structures of their building blocks. This is ...
Spherical aberration compensation plates
... Anna Lansing, Edmund Optics GmbH, Karlsruhe, Germany ...
... Anna Lansing, Edmund Optics GmbH, Karlsruhe, Germany ...
10 - Northeastern University
... Part 2 Prof. Charles A. DiMarzio Northeastern University Spring 2002 March 02002 ...
... Part 2 Prof. Charles A. DiMarzio Northeastern University Spring 2002 March 02002 ...
Sparse synthetic aperture with Fresnel elements (S
... achieve a compact sized system or vice versa. Therefore, the desire to achieve ultra-fine angular resolution in conventional imaging systems demands a relatively large aperture size, which might become challenging in terms of weight, structure stability and cost. The optical synthetic aperture (SA) ...
... achieve a compact sized system or vice versa. Therefore, the desire to achieve ultra-fine angular resolution in conventional imaging systems demands a relatively large aperture size, which might become challenging in terms of weight, structure stability and cost. The optical synthetic aperture (SA) ...
... high effective optical thickness of material. In other words, a very small width in the angular scan. In photopolymers is well known the Beer’s law, that implies an exponential decay of the light inside the material. This is the origin of not uniform index modulation in the photopolymer. This effect ...
Confocal optical microscopy
... consequence of this is that there can be no speckle effects with a scanning laser imager, and speckle is not a problem in confocal microscopy. Light may fall on the object from the side opposite the observer, as shown in figure 3, or it may be epitaxial, which means that it comes from the observatio ...
... consequence of this is that there can be no speckle effects with a scanning laser imager, and speckle is not a problem in confocal microscopy. Light may fall on the object from the side opposite the observer, as shown in figure 3, or it may be epitaxial, which means that it comes from the observatio ...
Deconvolution Microscopy
... The greatest limitation of optical microscopy is spatial resolution, which is in the range of the wavelength of light used. The ultimate goal of cell microscopy is to capture the activity of cell components. In this respect, the resolution of limited numerical aperture wide-field microscopy may not ...
... The greatest limitation of optical microscopy is spatial resolution, which is in the range of the wavelength of light used. The ultimate goal of cell microscopy is to capture the activity of cell components. In this respect, the resolution of limited numerical aperture wide-field microscopy may not ...
Terahertz Technology
... incident radiation below a certain frequency. It was necessary to show only that a discrete set of thin metallic structures could mimic this property of the bulk metal. The more difficult task was achieving a negative µ. It turned out that this could be done using a pair of concentric metallic rings ...
... incident radiation below a certain frequency. It was necessary to show only that a discrete set of thin metallic structures could mimic this property of the bulk metal. The more difficult task was achieving a negative µ. It turned out that this could be done using a pair of concentric metallic rings ...
Diffraction Gratings
... Note: The “evanescent” fields in material 2 are not completely evanescent. They have a purely real kx so they do flow energy in the transverse direction. Lecture 9 ...
... Note: The “evanescent” fields in material 2 are not completely evanescent. They have a purely real kx so they do flow energy in the transverse direction. Lecture 9 ...
diffraction uniformly illuminated circular aperture
... Irradiance I is the power of electromagnetic radiation per unit area (radiative flux) incident on a surface and its S.I. unit is watts per square meter [W.m-2]. A more general term for irradiance that you can use is the term intensity. ...
... Irradiance I is the power of electromagnetic radiation per unit area (radiative flux) incident on a surface and its S.I. unit is watts per square meter [W.m-2]. A more general term for irradiance that you can use is the term intensity. ...
Gain-Flattening Filters Using Dielectric Multilayer Thin Film
... quarter of the center wavelength has optical characteristics such that there is a cut-off region near the center wavelength and transmission bands on either side, so that optimization by means of non-linear fitting of the optical thickness of each layer makes it possible to approach the desired loss ...
... quarter of the center wavelength has optical characteristics such that there is a cut-off region near the center wavelength and transmission bands on either side, so that optimization by means of non-linear fitting of the optical thickness of each layer makes it possible to approach the desired loss ...
D12 in docx
... architectures based on Al-doped ZnO grown by atomic-layer deposition. Plasma frequencies up to visible frequencies have been achieved at reasonably small losses [D12:7]. Thus, this approach appears to be very attractive for three-dimensional infrared metamaterials and transformation-optics architect ...
... architectures based on Al-doped ZnO grown by atomic-layer deposition. Plasma frequencies up to visible frequencies have been achieved at reasonably small losses [D12:7]. Thus, this approach appears to be very attractive for three-dimensional infrared metamaterials and transformation-optics architect ...
Holographic characteristics of a 1-mm-thick
... that there is an induction period in thin layers only when the incident intensity is low and that the sensitivity of thick layers, in spite of the induction period, does not change compared with that of thinner layers 共Table 2兲, it is possible to provide an alternative approach to explain the induct ...
... that there is an induction period in thin layers only when the incident intensity is low and that the sensitivity of thick layers, in spite of the induction period, does not change compared with that of thinner layers 共Table 2兲, it is possible to provide an alternative approach to explain the induct ...
Light, Mirrors, and Lenses
... called a medium. Light is an electromagnetic wave and doesn’t need a medium in which to travel. Electromagnetic waves can travel in a vacuum, as well as through materials such as air, water, and glass. ...
... called a medium. Light is an electromagnetic wave and doesn’t need a medium in which to travel. Electromagnetic waves can travel in a vacuum, as well as through materials such as air, water, and glass. ...
chapter 6
... Each spherical lens has both spherical and chromatic aberrations. Instead of single lenses, the optical devices (light microscopes, projectors and the like) use double or even triple complexes of lenses. Each such double lens (dublex) consists of one converging and another one diverging lens, adjace ...
... Each spherical lens has both spherical and chromatic aberrations. Instead of single lenses, the optical devices (light microscopes, projectors and the like) use double or even triple complexes of lenses. Each such double lens (dublex) consists of one converging and another one diverging lens, adjace ...
Spectral Domain Optical Coherence Tomography
... coma, age-related macular degeneration, and diabetic retinopathy).28,29 The ultra-high speed nature of SDOCT also minimizes image distortion caused by involuntary eye movements, although motion artifacts are still present in 3-D volume sets acquired over a few seconds. Structures not previously visi ...
... coma, age-related macular degeneration, and diabetic retinopathy).28,29 The ultra-high speed nature of SDOCT also minimizes image distortion caused by involuntary eye movements, although motion artifacts are still present in 3-D volume sets acquired over a few seconds. Structures not previously visi ...
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.