Noninterferometric single-shot quantitative phase
... of the inverted microscope for time-lapse imaging with an Olympus LUCPLFLN 60× 0.7 NA objective. Unlike before, in this experiment the longitudinal intensity derivative was obtained by the difference between the two images with the same amount but opposite defocus of 1.5 μm. The central difference ...
... of the inverted microscope for time-lapse imaging with an Olympus LUCPLFLN 60× 0.7 NA objective. Unlike before, in this experiment the longitudinal intensity derivative was obtained by the difference between the two images with the same amount but opposite defocus of 1.5 μm. The central difference ...
Two-dimensional modulational instability in photorefractive media M Saffman , Glen McCarthy
... field is horizontal (along the x axis). In figure 3 we show a few examples of numerical simulations depicting results of propagation of the wide Gaussian beam with initial random perturbation of its amplitude, for a few values of the beam peak intensity. These graphs illustrate the inherently anisot ...
... field is horizontal (along the x axis). In figure 3 we show a few examples of numerical simulations depicting results of propagation of the wide Gaussian beam with initial random perturbation of its amplitude, for a few values of the beam peak intensity. These graphs illustrate the inherently anisot ...
Total internal reflection holography for optical interconnections
... by their incident angles °R and °r, respectively, and the onaxis spherical object and desired image waves are characOPTICAL ENGINEERING / February 1994 / Vol. 33 No. 2 / 639 ...
... by their incident angles °R and °r, respectively, and the onaxis spherical object and desired image waves are characOPTICAL ENGINEERING / February 1994 / Vol. 33 No. 2 / 639 ...
- Europhysics News
... and (2) using the same wavelength for the reconstruction would not yield any magnification. Therefore Gabor suggested to use visible light for the reconstruction after scaling up all dimensions in the ratio of light waves to electron waves, that is, by about a factor 100,000. Although attempts at el ...
... and (2) using the same wavelength for the reconstruction would not yield any magnification. Therefore Gabor suggested to use visible light for the reconstruction after scaling up all dimensions in the ratio of light waves to electron waves, that is, by about a factor 100,000. Although attempts at el ...
Spectroscopy – I. Gratings and Prisms
... If we could see the whole spectrum (radio to γ–ray), then every order would completely overlap with every other order. In reality, of course, many effects limit what we can see/measure. For example, the atmosphere will eliminate most photons at shorter wavelengths than about 340nm – as well as large ...
... If we could see the whole spectrum (radio to γ–ray), then every order would completely overlap with every other order. In reality, of course, many effects limit what we can see/measure. For example, the atmosphere will eliminate most photons at shorter wavelengths than about 340nm – as well as large ...
Theoretical and empirical comparison of coupling coefficient and
... separation of two fibers is significant in coupling coefficient because it determines the effective power transmission to another fiber. Even though the determination of coupling coefficient for a practical directional coupler is difficult, by evaluating the channel waveguide modes and observing the ...
... separation of two fibers is significant in coupling coefficient because it determines the effective power transmission to another fiber. Even though the determination of coupling coefficient for a practical directional coupler is difficult, by evaluating the channel waveguide modes and observing the ...
The goals of this chapter are to understand
... high-purity silica glass where impurity elements and defects, such as bubbles, have been eliminated to minimize absorption and scattering of the light signal. The signal attenuation in the core glass is typically 1 millionth that of ordinary glass. If ocean water was this clear, you could see the oc ...
... high-purity silica glass where impurity elements and defects, such as bubbles, have been eliminated to minimize absorption and scattering of the light signal. The signal attenuation in the core glass is typically 1 millionth that of ordinary glass. If ocean water was this clear, you could see the oc ...
- Natural Sciences Publishing
... Abstract: GexSb40-xSe60 (where 10≤ x≤ 30 at %) thin films were prepared on glass substrates by thermal evaporation technique. X-ray diffraction analysis for as – deposited films showed that they have amorphous structure. The optical constants of the as- deposited films were calculated from optical t ...
... Abstract: GexSb40-xSe60 (where 10≤ x≤ 30 at %) thin films were prepared on glass substrates by thermal evaporation technique. X-ray diffraction analysis for as – deposited films showed that they have amorphous structure. The optical constants of the as- deposited films were calculated from optical t ...
UNIVERSITAT POLITÈCNICA DE CATALUNYA
... a direction normal to the propagation of the light beams whereupon self power control should be the issue. As for practical beam steering devices it is very promising the case of spatial solitons that exist in discrete structures such as nonlinear waveguide and fiber arrays [150]. These spatially lo ...
... a direction normal to the propagation of the light beams whereupon self power control should be the issue. As for practical beam steering devices it is very promising the case of spatial solitons that exist in discrete structures such as nonlinear waveguide and fiber arrays [150]. These spatially lo ...
Color Astronomical Imaging Using Polarizing Filters
... photometric normalization and the loss of numerical precision that can present a hazard when subtracting numbers of similar magnitude. Specific methods that have been developed are unfortunately beyond the scope of this article but are planned for a future work. Discussion and Conclusion This work h ...
... photometric normalization and the loss of numerical precision that can present a hazard when subtracting numbers of similar magnitude. Specific methods that have been developed are unfortunately beyond the scope of this article but are planned for a future work. Discussion and Conclusion This work h ...
Optics - MIT Fab Lab
... According to geometrical optics, a plane wave can be focused down to a spot of infinitesimal size and hence infinite energy density. But this is of course impossible, and does not happen because the plane-wave approximation is no longer justified when dimensions become comparable to the wavelength. ...
... According to geometrical optics, a plane wave can be focused down to a spot of infinitesimal size and hence infinite energy density. But this is of course impossible, and does not happen because the plane-wave approximation is no longer justified when dimensions become comparable to the wavelength. ...
doc - IYPT Archive
... velocity of water increased and since the flow rate has to be constant, the radius of the jet decreased. On the surface of the jet there are always small fluctuations called Plateau-Rayleigh fluctuations, no matter how laminar the jet is. They increase as the velocity is greater. Since the jet narro ...
... velocity of water increased and since the flow rate has to be constant, the radius of the jet decreased. On the surface of the jet there are always small fluctuations called Plateau-Rayleigh fluctuations, no matter how laminar the jet is. They increase as the velocity is greater. Since the jet narro ...
How does a confocal microscope work
... This solves one of the problems of regular fluorescence microscopy. Normally, the sample is completely illuminated by the excitation light, so all of the sample is fluorescing at the same time. Of course, the highest intensity of the excitation light is at the focal point of the lens, but nonetheles ...
... This solves one of the problems of regular fluorescence microscopy. Normally, the sample is completely illuminated by the excitation light, so all of the sample is fluorescing at the same time. Of course, the highest intensity of the excitation light is at the focal point of the lens, but nonetheles ...
Skowrons Waugh Choose Ohio First poster
... The advantages of using an OLED include high energy efficiency, vibrant color, high contrast, low cost, and the ability to be placed on flexible substrate. The major disadvantage is the low optical efficiency. The goal of this sort of optical simulation is to optimize the outcoupling efficiency, whi ...
... The advantages of using an OLED include high energy efficiency, vibrant color, high contrast, low cost, and the ability to be placed on flexible substrate. The major disadvantage is the low optical efficiency. The goal of this sort of optical simulation is to optimize the outcoupling efficiency, whi ...
Assessing the Contributions of Surface Waves and Complex Rays to
... TE or TM partial-wave scattering amplitude may be interpreted as diffraction of the corresponding spherical multipole wave or its reflection by the sphere surface (p = 0) or as transmission through the sphere (p = 1) or transmission after making p - 1 internal reflections (p Ž 2). Expressed in this ...
... TE or TM partial-wave scattering amplitude may be interpreted as diffraction of the corresponding spherical multipole wave or its reflection by the sphere surface (p = 0) or as transmission through the sphere (p = 1) or transmission after making p - 1 internal reflections (p Ž 2). Expressed in this ...
Efficient output coupling of intracavity high harmonic generation
... losses than coupling the harmonic radiation out of the cavity through a small hole in a curved mirror. We add an optic directly after the intracavity focus. The element acts as a diffraction grating for all harmonic orders and yet, is a near perfect high-reflector for the 1070 nm fundamental light. ...
... losses than coupling the harmonic radiation out of the cavity through a small hole in a curved mirror. We add an optic directly after the intracavity focus. The element acts as a diffraction grating for all harmonic orders and yet, is a near perfect high-reflector for the 1070 nm fundamental light. ...
Light trapping in thin film organic solar cells
... Light trapping can be achieved upon novel designs of the device geometry [29–33]. A folded or V-shaped geometry is interesting, as its formation requires one single additional step, which is to fold the cell [29]. This can be easily done when a plastic substrate is used. A schematic device architect ...
... Light trapping can be achieved upon novel designs of the device geometry [29–33]. A folded or V-shaped geometry is interesting, as its formation requires one single additional step, which is to fold the cell [29]. This can be easily done when a plastic substrate is used. A schematic device architect ...
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.