Optical waveguide mode control by nanoslit-enhanced
... instance by plasmonic effects, are highly desirable. However, the majority of plasmonic phenomena are resonant and require sophisticated conditions in the THz range. Seo et al. demonstrated strong broadband enhancement of the THz field strength in a nanoslit [6]. Here we present a concept for a prac ...
... instance by plasmonic effects, are highly desirable. However, the majority of plasmonic phenomena are resonant and require sophisticated conditions in the THz range. Seo et al. demonstrated strong broadband enhancement of the THz field strength in a nanoslit [6]. Here we present a concept for a prac ...
de Sénarmont Bias Retardation in DIC Microscopy Introduction
... condenser and the rear focal plane of the objective. Because of their design limitations, Wollaston prisms were subsequently replaced with a more advanced system, introduced by French scientist Georges Nomarski, which enabled the prisms to be physically located some distance away from the condenser ...
... condenser and the rear focal plane of the objective. Because of their design limitations, Wollaston prisms were subsequently replaced with a more advanced system, introduced by French scientist Georges Nomarski, which enabled the prisms to be physically located some distance away from the condenser ...
Focusing of light through a stratified medium: a practical
... A commonly used diffraction model for microscope objective is that of Gibson and Lanni [2]. It is based on scalar diffraction theory. One advantageous feature of this model is that it specifically introduces as parameters to compute the PSF the design conditions of use of the objective, as recommend ...
... A commonly used diffraction model for microscope objective is that of Gibson and Lanni [2]. It is based on scalar diffraction theory. One advantageous feature of this model is that it specifically introduces as parameters to compute the PSF the design conditions of use of the objective, as recommend ...
materials Volume Holograms in Photopolymers: Comparison between Analytical and Rigorous Theories
... by Sigma (St. Louis, MO, USA) and YE by Panreac (Barcelona, Spain). The experimental procedure is described with more details in references [19,37]. The mixture is done under red light and after evaporation of part of the water; a solid plastic film is formed on a glass plate, which constitutes the ...
... by Sigma (St. Louis, MO, USA) and YE by Panreac (Barcelona, Spain). The experimental procedure is described with more details in references [19,37]. The mixture is done under red light and after evaporation of part of the water; a solid plastic film is formed on a glass plate, which constitutes the ...
Guide for the Measurement of Smooth Surface Topography using
... Figure 14. An epitaxial wafer surface topographies in different transmission bands: (a) the raw measured surface; (b) roughness surface (short scale SL-surface) S-filter = 0.36 μm (sampling space), L-filter = 8 μm); (c) wavy surface (middle scale SF-surface) Sfilter = 8 μm, F-operator; and (d) form ...
... Figure 14. An epitaxial wafer surface topographies in different transmission bands: (a) the raw measured surface; (b) roughness surface (short scale SL-surface) S-filter = 0.36 μm (sampling space), L-filter = 8 μm); (c) wavy surface (middle scale SF-surface) Sfilter = 8 μm, F-operator; and (d) form ...
X-ray phase contrast microscopy at 300 nm
... asymmetric front-coupling WGs with vacuum core and Silicon claddings [15,18]. The length of the WG devices was 5 mm. The virtual source was then a line source and the magnification effect took place in one dimension only. As for the coupling of the radiation into the WG and the transmission efficien ...
... asymmetric front-coupling WGs with vacuum core and Silicon claddings [15,18]. The length of the WG devices was 5 mm. The virtual source was then a line source and the magnification effect took place in one dimension only. As for the coupling of the radiation into the WG and the transmission efficien ...
optical design of an echelle grating based atomic emission
... photo-multiplier detectors (PMT) is used for simultaneous multi-element analysis[1-2]. This type of instrument has several drawbacks such as the number of spectral lines recorded are limited due to physical limitations in mounting many exit slits. The instrument also lacks the flexibility of changin ...
... photo-multiplier detectors (PMT) is used for simultaneous multi-element analysis[1-2]. This type of instrument has several drawbacks such as the number of spectral lines recorded are limited due to physical limitations in mounting many exit slits. The instrument also lacks the flexibility of changin ...
Band gap characterization and slow light effects in
... The structure simulated in this work is a Silicon waveguide (n H = 3.5) deposited onto a SiO 2 (nbu f f er = 1.45) buffer layer. Silicon core layer thickness is h = 300 nm, total waveguide width is 2WH + WS = 500 nm, slot core has a width of W S = 140 nm and a refractive index of n S = 1.65, which i ...
... The structure simulated in this work is a Silicon waveguide (n H = 3.5) deposited onto a SiO 2 (nbu f f er = 1.45) buffer layer. Silicon core layer thickness is h = 300 nm, total waveguide width is 2WH + WS = 500 nm, slot core has a width of W S = 140 nm and a refractive index of n S = 1.65, which i ...
A spatial light modulator for ion trapping experiments
... While this seems like a topic that only spies would be interested in, other problems are of more general interest. Calculating properties of solids, such as magnetism and superconductivity is of great interest for material sciences, however today systems of no more than a few dozen atoms or electron ...
... While this seems like a topic that only spies would be interested in, other problems are of more general interest. Calculating properties of solids, such as magnetism and superconductivity is of great interest for material sciences, however today systems of no more than a few dozen atoms or electron ...
full text pdf
... where the prime denotes the image volume, * denotes a 2-D convolution, and k′ denotes the central illumination wave vector. Fi represents the same thing as fi, except with the numerical aperture of the incident field and imaging objective accounted for. As the double cylinder is closely refractive i ...
... where the prime denotes the image volume, * denotes a 2-D convolution, and k′ denotes the central illumination wave vector. Fi represents the same thing as fi, except with the numerical aperture of the incident field and imaging objective accounted for. As the double cylinder is closely refractive i ...
Non-linear Optical Microscopy and Spectroscopy for
... applied to improve contrast when performing two-photon fluorescence microscopy for diagnostics of non-melanoma skin cancer. In this thesis, it is demonstrated that detection of two-photon excited fluorescence of endogenous PpIX in human skin is not possible. Instead, it is preferable to use a slightly ...
... applied to improve contrast when performing two-photon fluorescence microscopy for diagnostics of non-melanoma skin cancer. In this thesis, it is demonstrated that detection of two-photon excited fluorescence of endogenous PpIX in human skin is not possible. Instead, it is preferable to use a slightly ...
Analysis of Tilted Grating Etalon for DWDM Demultiplexer Sommart Sang-Ngern, Non-member
... nm the optical peak starts to transmitted at the wavelength of about 1562 nm but for Λ = 257 nm, the first optical peak appears at the wavelength of about 1587 nm. As the grating period changes of 4 nm, the start transmission optical peak is up-shifted for about 25 nm. This implies that the optical ...
... nm the optical peak starts to transmitted at the wavelength of about 1562 nm but for Λ = 257 nm, the first optical peak appears at the wavelength of about 1587 nm. As the grating period changes of 4 nm, the start transmission optical peak is up-shifted for about 25 nm. This implies that the optical ...
System for measuring the angular response of radiometers
... properly aligned. The first case can be dismissed by making measurements at other azimuth angles. Figure 4(A, B, C) shows the angular response of three quantum radiometers : two radiometers for global radiation measurements from 400 to 1100 nm (K&Z and LI-COR) and one PAR sensor for measuring photos ...
... properly aligned. The first case can be dismissed by making measurements at other azimuth angles. Figure 4(A, B, C) shows the angular response of three quantum radiometers : two radiometers for global radiation measurements from 400 to 1100 nm (K&Z and LI-COR) and one PAR sensor for measuring photos ...
Three-dimensional representation of leaf anatomy – Application of
... generalize rules as a principle: "a section through an n-dimensional object is, in general, an (n−1)dimension figure. Conversely, an n-dimensional figure in a section results, in general, from cutting an (n+1)-dimensional object". The second statement is the basis of stereology. Although many struct ...
... generalize rules as a principle: "a section through an n-dimensional object is, in general, an (n−1)dimension figure. Conversely, an n-dimensional figure in a section results, in general, from cutting an (n+1)-dimensional object". The second statement is the basis of stereology. Although many struct ...
Theory of confocal fluorescence imaging in the
... distributed confocal laser scanning microscope (CLSM) is its low duty cycle; the laser illuminates only one point at a time. In contrast, the conventional full-field microscope records the images much faster (no scanning is required) and is also more light efficient (no photons are rejected by a pin ...
... distributed confocal laser scanning microscope (CLSM) is its low duty cycle; the laser illuminates only one point at a time. In contrast, the conventional full-field microscope records the images much faster (no scanning is required) and is also more light efficient (no photons are rejected by a pin ...
Automated classification and recognition of bacterial particles in flow
... varying from 10 to 10000 particles per second. The choice of angle is dictated by the fact that scattered light in the small-angle region is primarily influenced by cell size and refractive index, whereas side scatter intensity is related to the granularity of cellular structures. Obviously, these r ...
... varying from 10 to 10000 particles per second. The choice of angle is dictated by the fact that scattered light in the small-angle region is primarily influenced by cell size and refractive index, whereas side scatter intensity is related to the granularity of cellular structures. Obviously, these r ...
Synopsis by Lori Moore
... typically specified: the low, mid, and high spatial frequency regions. The cutoffs for each region depend on the application. For optical applications the wavelength of the light used and the size of the part are often the parameters which determine the cutoffs for the three regions. The lower order ...
... typically specified: the low, mid, and high spatial frequency regions. The cutoffs for each region depend on the application. For optical applications the wavelength of the light used and the size of the part are often the parameters which determine the cutoffs for the three regions. The lower order ...
Phase space of partially coherent light with discontinuous surfaces
... interference effects. The fine structures in phase space result from a superposition of all the interference effects generated by individual grooves. With Δϕ between 1.4 and 2.4 the diffracted orders are separated from each other by a large distance. In free-space propagation, each diffracted order ...
... interference effects. The fine structures in phase space result from a superposition of all the interference effects generated by individual grooves. With Δϕ between 1.4 and 2.4 the diffracted orders are separated from each other by a large distance. In free-space propagation, each diffracted order ...
Laser Doppler Flowmetry - a Theoretical Framework
... part, respectively, since those signals are usually processed completely separately. Looking at expression 4.7, one can realize that the signal to noise ratio of the iac signal decreases when the number of speckle areas, ns, increases, arguing that the detector should contain as few speckle areas as ...
... part, respectively, since those signals are usually processed completely separately. Looking at expression 4.7, one can realize that the signal to noise ratio of the iac signal decreases when the number of speckle areas, ns, increases, arguing that the detector should contain as few speckle areas as ...
McIntyre, Stuart (2013) Limitations to light microscope resolution in
... preparations, while simultaneously optically sectioning the samples. However, due to the complexity of these experimental set-ups, it is difficult to set up control samples that allow the user to predict how their sample is affecting the quality of the data being captured. ...
... preparations, while simultaneously optically sectioning the samples. However, due to the complexity of these experimental set-ups, it is difficult to set up control samples that allow the user to predict how their sample is affecting the quality of the data being captured. ...
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.