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MODELLING OF PHOTONIC COMPONENTS BASED ON ÷(3) NONLINEAR PHOTONIC CRYSTALS Ivan Maksymov
MODELLING OF PHOTONIC COMPONENTS BASED ON ÷(3) NONLINEAR PHOTONIC CRYSTALS Ivan Maksymov

... of a material whose properties do not depend on the intensity of the propagating light, it is called linear. In contrast, if the properties of the constituent material depend on the intensity, the photonic crystal is called nonlinear. Nonlinear photonic crystals can be made from dielectrics, glasses ...
Diffraction Grating Handbook
Diffraction Grating Handbook

... “No single tool has contributed more to the progress of modern physics than the diffraction grating …”1 Newport Corporation is proud to build upon the heritage of technical excellence that began when Bausch & Lomb produced its first high-quality master grating in the late 1940s. A high-fidelity repl ...
generation and propagation of optical vortices
generation and propagation of optical vortices

... arbitrary distributions of optical vortex filaments for experimental exploration. Hydrodynamic analogies were used to develop an heuristic model which described the dependence of vortex motion on other vortices and the background beam, both qualitatively and quantitatively. We predicted that pair of ...
Diffraction Grating Handbook
Diffraction Grating Handbook

... The first diffraction grating was made by an American astronomer, David Rittenhouse, in 1785, who reported constructing a half-inch wide grating with fifty-three apertures. Apparently he developed this prototype no further, and there is no evidence that he tried to use it for serious scientific expe ...
Scanning angle total internal reflection Raman spectroscopy and
Scanning angle total internal reflection Raman spectroscopy and

... where P0 is the incident photon flux, σ Dj is the frequency independent cross section for the jth molecular vibration mode, D is the number density of scatterers, dz is the path length of the laser in the sample and all frequency terms, (ν), are expressed in wavenumbers (cm-1). A full derivation of ...
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... Figure 8-19. Overlap of interconnects when all 8 holograms are illuminated simultaneously ...
Fused Silica Transmission Gratings
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... Fused silica transmission gratings are also surface relief gratings, where the phase is altered by periodic changes of the optical distance that the illumination experiences as it passes through the grating material versus air. Fused silica gratings work with a large difference in refractive index b ...
`Singular Optics`, International Journal of Optics, Vol.2012
`Singular Optics`, International Journal of Optics, Vol.2012

... for call for papers and the various subsequent processes involved. We have received quite a number of submissions, and after peer-review process 11 articles were selected for this special issue. Optical vortex also known as optical phase singularity is a point phase defect at which the phase is inde ...
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... uctuations, this transition has remained an incompletely understood problem in condensed matter physics. The role of uctuations is particularly interesting and complicated in the region of material-parameter space close to the Landau tricritical point (LTP), where the HLM e ect is expected to be m ...
Investigating Naturally Occurring 3
Investigating Naturally Occurring 3

... the largest range of frequencies possible from this geometry, also aiding iridescence suppression. In addition to this, the arrangement of gyroid arrays within each scale was determined to produce the highest intensity possible by using the smallest possible number of unit cells. In addition to the ...
Fundamentals of Light Microscopy and Electronic Imaging
Fundamentals of Light Microscopy and Electronic Imaging

... software, and printer into electronic imaging systems. Therefore, to use a modern research microscope, it is clear that research scientists need to know not only how to align the microscope optics, but also how to acquire electronic images and perform image processing. Thus, the focus of the book is ...
Basic Wavefront Aberration Theory for Optical Metrology
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... The particular form of the wavefront emerging from a real lens can be exceedingly complex, since it is generally the result of a number of random errors in the design, fabrication, and assembly of the lens. Nevertheless, lenses that are well made and carefully assembled do possess certain aberration ...
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... real object can be reproduced by a hologram. Thus viewing a hologram is no different than viewing the actual object which it represents. In the comprehension of a three-dimensional (3D) scene, the human visual system relies on many depth cues, all of which can be reproduced by holography. To better ...
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... the sensor, different algorithms can be developed, such as detecting the atmospheric turbulence effects as well as retrieving undistorted images of distant objects. Efficient 3D simulations on atmospheric turbulence based on geometric optics have been established to help us perform optimization on s ...
Full text - Simon Fraser University
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... room temperature [1] and theoretically a prediction of the existence of anomalous quantum Hall effect in honeycomb materials at higher temperatures was made [2]. Graphene, one of today’s most interesting two-dimensional materials, has a zero overlap semi-metal band structure, which makes it a metalli ...
STED Microscopy
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... first exposed to an excitation laser pulse and directly afterward by a STED laser pulse. In addition to the fluorescence lifetime, τ fl (typically ∼2 ns), vibrational relaxation lifetimes, τ vib (typically <1 ps), and nonlinear absorption occurring at high peak intensities have to be considered in this ...
Soliton Interactions and the Formation of Solitonic Patterns
Soliton Interactions and the Formation of Solitonic Patterns

... 1.1 Solitons and the dynamics of pattern formation Everyone in America knows what a fractal is. Take a stroll around any college campus and you will pass by young computer scientists wearing T-shirts emblazoned with brightly colored spiraling patterns. In the corporate world, fractals thrive in the ...
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... 4 Channel Assembly . . . . . . . . . . . Aberrations . . . . . . . . . . . . . . . . Optical beam parameters . . . . . . . . ...
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... microscope focuses accelerated electrons rather than light. The de Broglie wavelength of the electrons can be as small as 0.005 nm and is easily controllable by an acceleration voltage of typically 50-100 kV so that the wave nature of the electrons does hardly play a limiting role. Presently, electr ...
reflectance measurement and modelling of high reflectivity
reflectance measurement and modelling of high reflectivity

... Distributed Bragg Reflector (DBR) is becoming an important component in optoelectronic devices particularly the quarter-wave semiconductor DBR because of its ease of monolithic integration, hence eliminating the requirement for post-growth processing and simplifying the design. The nature of the int ...
LIGHT GENERATION AND MANIPULATION FROM NONLINEAR RANDOMLY DISTRIBUTED DOMAINS IN SBN
LIGHT GENERATION AND MANIPULATION FROM NONLINEAR RANDOMLY DISTRIBUTED DOMAINS IN SBN

... On the other hand, a multiple scattering theory is needed for random media with a large number of scatterers, occupying a large portion of the total volume. In this case, the light intensity received by each scatterer from the rest of the scatterers may be larger than the light intensity received fr ...
THESIS Theoretical Study of Light Scattering by an Elliptical Cylinder
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... rainbow is nothing more than the refraction of light by raindrops. The human has being always interested in those phenomena because of two main reasons. The first is due to the curiosity. From antiquity, we are anxious to understand the mysteries of nature. As early as the seventeenth century, Desca ...
Document
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... The bound b  1 therefore provides a condition of stability (boundedness) of the ray trajectory If, instead, |b| > 1,  is then imaginary and the solution is a hyperbolic function (cosh or sinh), which increases without bound. A harmonic solution ensures that y, is bounded for all m, with a maximum ...
Propagation dynamics of optical vortices
Propagation dynamics of optical vortices

... and thus we shall call it an r vortex. In the case of OVS’s or other localized cores, the amplitude can be modeled as tanh(r/wv), and we shall call this a tanh vortex. As the size of the tanh vortex vanishes (w v → 0) the vortex is said to become a point vortex. This paper was written to help develo ...
Polarization-insensitive high-dispersion total internal reflection
Polarization-insensitive high-dispersion total internal reflection

... Figure 1 depicts such a high-dispersion TIR grating. The light is incident on the grating from within material 1 at an angle ␪ i . With the grating period and the angle of incidence chosen such that expression (1) is satisfied, no light escapes into material 2 regardless of the grating groove shape. ...
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Diffraction topography

Diffraction topography (short: ""topography"") is an quantum beam imaging technique based on Bragg diffraction.Diffraction topographic images (""topographies"") record the intensity profile of a beam of X-rays (or, sometimes, neutrons) diffracted by a crystal.A topography thus represents a two-dimensional spatial intensity mapping of reflected X-rays, i.e. the spatial fine structure of a Laue reflection.This intensity mapping reflects the distribution of scattering power inside the crystal; topographs therefore reveal the irregularities in a non-ideal crystal lattice.X-ray diffraction topography is one variant of X-ray imaging, making use of diffraction contrast rather than absorption contrast which is usually used in radiography and computed tomography (CT). Topography is exploited to a lesser extends with neutrons and other quantum beams. In the electron microscope community, such technique is called dark field imaging or diffraction contrast imaging.Topography is used for monitoring crystal quality and visualizing defects in many different crystalline materials.It has proved helpful e.g. when developing new crystal growth methods, for monitoring growth and the crystal quality achieved, and for iteratively optimizing growth conditions.In many cases, topography can be applied without preparing or otherwise damaging the sample; it is therefore one variant of non-destructive testing.
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