Experimental implementation of the gyrator transform - E
... displayed. The input complex field amplitude is generated by the two coupled spatial light modulators (SLMs). This optical configuration is known as a hybrid hologram [12] because the amplitude and phase components of the input signal are separately implemented on each SLM. The amplitude component i ...
... displayed. The input complex field amplitude is generated by the two coupled spatial light modulators (SLMs). This optical configuration is known as a hybrid hologram [12] because the amplitude and phase components of the input signal are separately implemented on each SLM. The amplitude component i ...
Direct Imaging of Transient Interference in a Optical Microscopy
... NSOM is used to directly measure the evanescent field on the upper surface of the waveguide. The NSOM technique has been frequently used for optical waveguide characterization in light propagation properties, spatial modes profile, and guided modes interference [2]–[5]. NSOM measurements reported he ...
... NSOM is used to directly measure the evanescent field on the upper surface of the waveguide. The NSOM technique has been frequently used for optical waveguide characterization in light propagation properties, spatial modes profile, and guided modes interference [2]–[5]. NSOM measurements reported he ...
Cloaking at Optical Frequencies - Cornell ECE
... Maxwell’s equations, several designs for such a device were created12-23. These designs are based on the idea of manipulating the structure of the cloaking medium so that the trajectory of light after interacting with the cloak is the same as that in an empty medium, without the cloak nor the object ...
... Maxwell’s equations, several designs for such a device were created12-23. These designs are based on the idea of manipulating the structure of the cloaking medium so that the trajectory of light after interacting with the cloak is the same as that in an empty medium, without the cloak nor the object ...
Devil`s lens optical tweezers
... manipulation of light has even been extended to plasmonics, where a two-dimensional “Sierpinski nanocarpet” structure was shown to produce sub-diffraction limit confinement of the optical field [24]. In this paper we report on the experimental demonstration of a fractal structure lens, the so-calle ...
... manipulation of light has even been extended to plasmonics, where a two-dimensional “Sierpinski nanocarpet” structure was shown to produce sub-diffraction limit confinement of the optical field [24]. In this paper we report on the experimental demonstration of a fractal structure lens, the so-calle ...
An Introduction to Propagation, Time Reversal and Imaging in
... field u1 , as given by (4) with A being the obstacle, decays like 1/z pointwise where z is the distance behind the obstacle. Thus, for a sufficiently large distance u2 is approximately ui . In other words, a Bessel beam reforms after passing through an obstacle [5]. Physically, this can be understo ...
... field u1 , as given by (4) with A being the obstacle, decays like 1/z pointwise where z is the distance behind the obstacle. Thus, for a sufficiently large distance u2 is approximately ui . In other words, a Bessel beam reforms after passing through an obstacle [5]. Physically, this can be understo ...
Analytic design method for optimal imaging: coupling three ray sets
... point in the image space which can be achieved by using a Cartesian oval [3]. In order to focus light coming from an additional object point, one surface is no longer sufficient, two surfaces are needed. In general, an optical system consisting of N optical surfaces can couple N sets of rays for whi ...
... point in the image space which can be achieved by using a Cartesian oval [3]. In order to focus light coming from an additional object point, one surface is no longer sufficient, two surfaces are needed. In general, an optical system consisting of N optical surfaces can couple N sets of rays for whi ...
Diffraction limited resolution - X-ray and Observational Astronomy
... • A fundamental limit exists in our ability to resolve objects • This limit arises by diffraction • Consider a single slit width D • Any ray passing through this aperture and arriving at a specific point in the focal plane is associated with another ray passing through the aperture one half slit wid ...
... • A fundamental limit exists in our ability to resolve objects • This limit arises by diffraction • Consider a single slit width D • Any ray passing through this aperture and arriving at a specific point in the focal plane is associated with another ray passing through the aperture one half slit wid ...
RESOLUTION OF ICCD CAMERAS
... is defined by the ratio of percentage modulation of a sinusoidal signal leaving to that entering the device over the range of frequencies of interest (see figure 1 below). It is mathematically obtainable from the point spread function (PSF) or line spread function (LSF), which are discussed in a lat ...
... is defined by the ratio of percentage modulation of a sinusoidal signal leaving to that entering the device over the range of frequencies of interest (see figure 1 below). It is mathematically obtainable from the point spread function (PSF) or line spread function (LSF), which are discussed in a lat ...
Resins for Optics
... the water in a deflected direction and then travels straight through the water as well. As discussed above, the property in which the travel direction is deflected when the light enters a different material is called "refraction." Degree of refraction differs by material, and numeric representation ...
... the water in a deflected direction and then travels straight through the water as well. As discussed above, the property in which the travel direction is deflected when the light enters a different material is called "refraction." Degree of refraction differs by material, and numeric representation ...
MEMS-based handheld confocal microscope for in
... NA objective lenses for endoscopic confocal microscopes have been developed [18][19], but they are designed for use with coherent fiber bundles to relay scanned light to the sample. Without the size constraint of endoscopic variations, the use of larger commercial objective lenses for high NA skin i ...
... NA objective lenses for endoscopic confocal microscopes have been developed [18][19], but they are designed for use with coherent fiber bundles to relay scanned light to the sample. Without the size constraint of endoscopic variations, the use of larger commercial objective lenses for high NA skin i ...
Total internal reflection photonic crystal prism
... The presence of an evanescent field is the signature of near-field optics. There are two main characteristics of these waves that distinguish them from propagating waves. The first is their intensity profile, which exponentially decays away from the source that created them. This means that they are ...
... The presence of an evanescent field is the signature of near-field optics. There are two main characteristics of these waves that distinguish them from propagating waves. The first is their intensity profile, which exponentially decays away from the source that created them. This means that they are ...
Measuring the Real Point Spread Function of High Numerical
... In confocal microscopy, where the signal is determined by the overlap of the effective excitation and detection PSFs, the loss of register between them should lead to a reduction of signal towards the edge of the field of view. It has to be said, though, that in most confocal microscopes, almost alw ...
... In confocal microscopy, where the signal is determined by the overlap of the effective excitation and detection PSFs, the loss of register between them should lead to a reduction of signal towards the edge of the field of view. It has to be said, though, that in most confocal microscopes, almost alw ...
The Projecting Microscope
... you should take to avoid this risk. Remember: Never look into the beam! Always use a card held in the beam to see where it is. Be aware that the beam may be unexpectedly reflected off of shiny surfaces. 2. Learn how to handle and clean optical components so that they are not damaged. ...
... you should take to avoid this risk. Remember: Never look into the beam! Always use a card held in the beam to see where it is. Be aware that the beam may be unexpectedly reflected off of shiny surfaces. 2. Learn how to handle and clean optical components so that they are not damaged. ...
Optical quality of the eye lens surfaces from
... To obtain the roughness of the equivalent Gaussian diffuser, we have applied a reformulation of the Beckmann theory of scattering of electromagnetic waves from rough surfaces." The Beckmann model gives the mean intensity distribution at the focal plane of a collecting lens for the light scattered fr ...
... To obtain the roughness of the equivalent Gaussian diffuser, we have applied a reformulation of the Beckmann theory of scattering of electromagnetic waves from rough surfaces." The Beckmann model gives the mean intensity distribution at the focal plane of a collecting lens for the light scattered fr ...
Total Reflection and Negative Refraction of
... frequency range have attracted much attention, due to their potential uses not only as signals in new-paradigm logic devices [3] but also as monochromatic “on board” gigahertz-frequencyrange microwave sources in integrated electronic circuits [4]. In order to realize such promising DESW applications ...
... frequency range have attracted much attention, due to their potential uses not only as signals in new-paradigm logic devices [3] but also as monochromatic “on board” gigahertz-frequencyrange microwave sources in integrated electronic circuits [4]. In order to realize such promising DESW applications ...
may11-96 as a Word 6.0 doc - Lyle School of Engineering
... the loss in the high index medium cannot exceed the loss in the low index medium, and/or d) the light ray must be traveling from a high index to a low index. Briefly explain your answer: ...
... the loss in the high index medium cannot exceed the loss in the low index medium, and/or d) the light ray must be traveling from a high index to a low index. Briefly explain your answer: ...
Miniaturized modules for light sheet microscopy with low chromatic
... between wavelengths of 480 and 640 nm, if a singlet planoconvex cylindrical lens made of N-BK 7 with an Abbe number ν e = 64 and a focal length f’ = 50 mm is used. Such a focal shift is crucial in light sheet microscopy since there is a major impact on illumination and thus on image quality. Therefo ...
... between wavelengths of 480 and 640 nm, if a singlet planoconvex cylindrical lens made of N-BK 7 with an Abbe number ν e = 64 and a focal length f’ = 50 mm is used. Such a focal shift is crucial in light sheet microscopy since there is a major impact on illumination and thus on image quality. Therefo ...
Double Negative Materials (DNM) - Institute for Defense Analyses
... “Normal” optical materials that have electric permeability ε > 0 and magnetic permittivity μ > 0 are quite familiar to students of physics and engineering. DNMs that have electric permeability ε < 0 and magnetic permittivity μ < 0 are quite different. They do not normally occur in nature, are man-ma ...
... “Normal” optical materials that have electric permeability ε > 0 and magnetic permittivity μ > 0 are quite familiar to students of physics and engineering. DNMs that have electric permeability ε < 0 and magnetic permittivity μ < 0 are quite different. They do not normally occur in nature, are man-ma ...
502-22 Illumination Systems
... • The projection lens focal length and the object-image distances are determined by the screen position and size and the object size (magnification and object-image distance). • The condenser lens diameter is determined by the object size and any needed separation between the condenser lens and the ...
... • The projection lens focal length and the object-image distances are determined by the screen position and size and the object size (magnification and object-image distance). • The condenser lens diameter is determined by the object size and any needed separation between the condenser lens and the ...
Scanning Electron Microscope - i-Explore International Research
... A. Interaction Volume The combined effect of the elastic and inelastic interactions is to distribute the beam electrons over a three-dimensional “interaction volume” [6]. The concept of interaction volume of the primary beam electrons and the sampling volume of the emitted secondary radiation are im ...
... A. Interaction Volume The combined effect of the elastic and inelastic interactions is to distribute the beam electrons over a three-dimensional “interaction volume” [6]. The concept of interaction volume of the primary beam electrons and the sampling volume of the emitted secondary radiation are im ...
Chapter 36
... This is the lateral magnification for any type of mirror. It is also valid for images formed by lenses. Magnification does not always mean bigger, the size can either increase or decrease. M can be less than or greater than 1. ...
... This is the lateral magnification for any type of mirror. It is also valid for images formed by lenses. Magnification does not always mean bigger, the size can either increase or decrease. M can be less than or greater than 1. ...
Geometric Optics
... If height is negative the image is upside down if the magnification is negative the image is inverted (upside down) J.M. Gabrielse ...
... If height is negative the image is upside down if the magnification is negative the image is inverted (upside down) J.M. Gabrielse ...
Surface Plasmon Interference Nanolithography
... and the contrast. Even if this cavity is completely offresonance (L ) 2100 nm, for instance), the interference intensity contrast is still as high as 0.4 at the grating edges. As indicated earlier, the wavelength of the surface plasmon is sensitive to its frequency, therefore the resolution of SPIN ...
... and the contrast. Even if this cavity is completely offresonance (L ) 2100 nm, for instance), the interference intensity contrast is still as high as 0.4 at the grating edges. As indicated earlier, the wavelength of the surface plasmon is sensitive to its frequency, therefore the resolution of SPIN ...
Geometric Optics
... Reflection is when light changes direction by bouncing off a surface. When light is reflected off a mirror, it hits the mirror at the same angle (θi, the incidence angle) as it reflects off the mirror (θr, the reflection angle). ...
... Reflection is when light changes direction by bouncing off a surface. When light is reflected off a mirror, it hits the mirror at the same angle (θi, the incidence angle) as it reflects off the mirror (θr, the reflection angle). ...
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.