Quasi Phase Matching Devices for Optical
... Quasi phase matching (QPM) is a method for achieving efficient energy transfer between interacting waves in a nonlinear process. It is most efficient and practical form of this technique is based on a spatial modulation of the nonlinear properties along the interaction path in the material. Such a s ...
... Quasi phase matching (QPM) is a method for achieving efficient energy transfer between interacting waves in a nonlinear process. It is most efficient and practical form of this technique is based on a spatial modulation of the nonlinear properties along the interaction path in the material. Such a s ...
Inverse Problems In Multiple Light Scattering
... This dissertation discusses practical means that go beyond ensemble averaging to probe complex media and extract additional information about a random scattering system. The dissertation discusses cases in which media with similar average properties can be differentiated by detailed examination of f ...
... This dissertation discusses practical means that go beyond ensemble averaging to probe complex media and extract additional information about a random scattering system. The dissertation discusses cases in which media with similar average properties can be differentiated by detailed examination of f ...
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G02F takes
... array, e.g. frequency selective surfaces (for use with wavelengths longer than the infra-red light H01Q 15/0006)} Definition statement This place covers: Filters in which the spectral filtering is performed by a conductive grid or mesh. The background is that for microwave optics, there has long exi ...
... array, e.g. frequency selective surfaces (for use with wavelengths longer than the infra-red light H01Q 15/0006)} Definition statement This place covers: Filters in which the spectral filtering is performed by a conductive grid or mesh. The background is that for microwave optics, there has long exi ...
Semiconductor Lasers Using Diffused Quantum
... are the zinc, silicon, and oxygen. The impurities used for disordering the heterostructure QW can be divided into two major categories: 1) electrically active and 2) neutral. Examples of electrical active species are zinc (p-type ions) and silicon (ntype ions) [2], [4], [5], [12], while neutral impu ...
... are the zinc, silicon, and oxygen. The impurities used for disordering the heterostructure QW can be divided into two major categories: 1) electrically active and 2) neutral. Examples of electrical active species are zinc (p-type ions) and silicon (ntype ions) [2], [4], [5], [12], while neutral impu ...
Polarization-insensitive high-dispersion total internal reflection
... groove shape, such as sinusoidal, binary, trapezoidal, or blazed, is classified as a TIR grating provided that expression (1) is satisfied. While, in general, material 2 can be chosen to be any dielectric material such that expression (1) is satisfied, the true value of such an immersed grating is g ...
... groove shape, such as sinusoidal, binary, trapezoidal, or blazed, is classified as a TIR grating provided that expression (1) is satisfied. While, in general, material 2 can be chosen to be any dielectric material such that expression (1) is satisfied, the true value of such an immersed grating is g ...
Aalborg Universitet theoretical analysis of finite-height semiconductor-on-insulator based planar photonic
... In this paper, we investigate theoretically a photonic crystal waveguide based on the semiconductor-on-insulator (SOI) materials system. We have previously developed a technique for obtaining design guidelines for photonic crystal waveguides based on 2-D calculations [22], [23]. In Section II, this ...
... In this paper, we investigate theoretically a photonic crystal waveguide based on the semiconductor-on-insulator (SOI) materials system. We have previously developed a technique for obtaining design guidelines for photonic crystal waveguides based on 2-D calculations [22], [23]. In Section II, this ...
Partially coherent beam shaping and imaging
... order to make numerical calculations feasible, so-called modal approaches [46–51] are used extensively, especially to describe partial spatial coherence. Such modal approaches, in which the partially coherent field is represented as a superposition of fully coherent fields, lead to the evaluation of ...
... order to make numerical calculations feasible, so-called modal approaches [46–51] are used extensively, especially to describe partial spatial coherence. Such modal approaches, in which the partially coherent field is represented as a superposition of fully coherent fields, lead to the evaluation of ...
The Theory of Diffraction Tomography
... to quantify the refractive index distribution within single cells using light from the visible spectrum. Nevertheless, these approaches, commonly summarized as optical projection tomography, do not take into account diffraction. Diffraction tomography with the Rytov approximation resolves this issue ...
... to quantify the refractive index distribution within single cells using light from the visible spectrum. Nevertheless, these approaches, commonly summarized as optical projection tomography, do not take into account diffraction. Diffraction tomography with the Rytov approximation resolves this issue ...
Paraxial Optics
... direction. The angles of incidence are positive when rotating the rays to reach the perpendicular to the incidence point, the rotation is in the clockwise direction. Fig. 4 shows a situation where all the variables are positive. Mirrors A simple and useful optical system is formed by a reflecting su ...
... direction. The angles of incidence are positive when rotating the rays to reach the perpendicular to the incidence point, the rotation is in the clockwise direction. Fig. 4 shows a situation where all the variables are positive. Mirrors A simple and useful optical system is formed by a reflecting su ...
Experimental and Theoretical Studies in Optical Coherence Theory
... also showed that light consists of two orthogonal vibrations, transverse to the direction of propagation. As a result almost the entire scientific community became convinced of the wave nature of light. In the meantime research in electricity and magnetism was undertaken almost independently from op ...
... also showed that light consists of two orthogonal vibrations, transverse to the direction of propagation. As a result almost the entire scientific community became convinced of the wave nature of light. In the meantime research in electricity and magnetism was undertaken almost independently from op ...
Applications of spatial light modulators for optical trapping and
... In Chapter 3 we present a setup for the generation of so called vector beams – laser modes with special phase and polarization profile (Maurer et al., 2007). To our knowledge, this is the first setup of this kind which is based on a twisted nematic SLM. For instance, we demonstrate the generation of ...
... In Chapter 3 we present a setup for the generation of so called vector beams – laser modes with special phase and polarization profile (Maurer et al., 2007). To our knowledge, this is the first setup of this kind which is based on a twisted nematic SLM. For instance, we demonstrate the generation of ...
Polarization-Independent Metamaterial Analog of
... distribution on the left and the lower side arms of the SRR, and thus excite a transmitted wave with the same electric field contribution from the vertical and horizontal direction. In contrast to the single SRR structure, when the coupling between the SR and SRR is introduced, the cross-polarized w ...
... distribution on the left and the lower side arms of the SRR, and thus excite a transmitted wave with the same electric field contribution from the vertical and horizontal direction. In contrast to the single SRR structure, when the coupling between the SR and SRR is introduced, the cross-polarized w ...
LINEAR AND NONLINEAR LIGHT BULLETS: RECENT
... In both optics and photonics and in the exciting research area of matter waves (Bose-Einstein condensates), the localized vortices, i.e., vortex solitons, have drawn much attention in the past decade as objects of fundamental interest. Vortex solitons have a lot of potential applications to all-opti ...
... In both optics and photonics and in the exciting research area of matter waves (Bose-Einstein condensates), the localized vortices, i.e., vortex solitons, have drawn much attention in the past decade as objects of fundamental interest. Vortex solitons have a lot of potential applications to all-opti ...
Dispersion Compensation Using Tunable Chirped Apodized Far Off Resonance Fiber
... wavelength of the grating results in lower values of the quadratic dispersion produced by the grating. They also showed that the applications of this method include dispersion compensation and fiber lasers in which the quadratic dispersion is crucial in determining the properties of emitted pulses [ ...
... wavelength of the grating results in lower values of the quadratic dispersion produced by the grating. They also showed that the applications of this method include dispersion compensation and fiber lasers in which the quadratic dispersion is crucial in determining the properties of emitted pulses [ ...
Modern Optical Engineering
... A new, simple, and easily understood derivation of the conservation of brightness and radiance has been added. New or expanded tables of brightness, illumination, and reflectance have been included, and the searchlight figure is improved. New equations for telescope (or afocal) component powers, eye ...
... A new, simple, and easily understood derivation of the conservation of brightness and radiance has been added. New or expanded tables of brightness, illumination, and reflectance have been included, and the searchlight figure is improved. New equations for telescope (or afocal) component powers, eye ...
Pulse splitting by modulating the thickness of buffer layer of two
... Where Δωp = 2/T, we get ΔλP = 39.8nm. Gratings that satisfy ΔλG >> ΔλP preserve the incident pulse spectrum, meanwhile ΔλP >ΔλG perform wavelength selectivity. In our discussion, ΔλP > ΔλG, so some spectral components in the incident pulse are filtered out. According to Fourier optics, in time domai ...
... Where Δωp = 2/T, we get ΔλP = 39.8nm. Gratings that satisfy ΔλG >> ΔλP preserve the incident pulse spectrum, meanwhile ΔλP >ΔλG perform wavelength selectivity. In our discussion, ΔλP > ΔλG, so some spectral components in the incident pulse are filtered out. According to Fourier optics, in time domai ...
A very convenient setup to generate intense VUV coherent light at
... index of nonlinear medium by the intense visible light may destroy phase-matching (optical Kerr effect). It is worth noting, that the off-resonance conditions offer the possibility of investigating this phenomenon, which is greatly suppressed in the resonant case. For the two-photon resonant situation, ...
... index of nonlinear medium by the intense visible light may destroy phase-matching (optical Kerr effect). It is worth noting, that the off-resonance conditions offer the possibility of investigating this phenomenon, which is greatly suppressed in the resonant case. For the two-photon resonant situation, ...
A study on optical absorption and constants of doped poly(ethylene
... values of the mobility gap for different PEO electrolyte composites. The increments of the energy tail widths can be explained by the fact that increasing the NaI content may lead to the creation of ionic complexes, disorder, and imperfections in the structure of the composites, a case that may incr ...
... values of the mobility gap for different PEO electrolyte composites. The increments of the energy tail widths can be explained by the fact that increasing the NaI content may lead to the creation of ionic complexes, disorder, and imperfections in the structure of the composites, a case that may incr ...
Optical parameters of milk fat globules for laser light scattering
... among fat globules [19]. The resulting light scattering and absorption by crystals will thus depend on the thermal past of the product. It is thus not advised to use partially crystallized fat globules for LLS measurements, since the ka value is then not known with certainty. 3.2. Milk fat globule r ...
... among fat globules [19]. The resulting light scattering and absorption by crystals will thus depend on the thermal past of the product. It is thus not advised to use partially crystallized fat globules for LLS measurements, since the ka value is then not known with certainty. 3.2. Milk fat globule r ...
The Fresnel Coefficients - The Society of Vacuum Coaters
... away on the 14th July that year. Fresnel’s great optical work, then, occupied only a decade, from around 1813, till 1823, a good part of which was devoted to his civil engineering career. The word impressive falls far short in describing what he managed to achieve. The shortness of this abbreviated ...
... away on the 14th July that year. Fresnel’s great optical work, then, occupied only a decade, from around 1813, till 1823, a good part of which was devoted to his civil engineering career. The word impressive falls far short in describing what he managed to achieve. The shortness of this abbreviated ...
near-field radiative transfer: thermal radiation
... Francoeur, Mathieu, "NEAR-FIELD RADIATIVE TRANSFER: THERMAL RADIATION, THERMOPHOTOVOLTAIC POWER GENERATION AND OPTICAL CHARACTERIZATION" (2010). University of Kentucky Doctoral Dissertations. Paper 58. ...
... Francoeur, Mathieu, "NEAR-FIELD RADIATIVE TRANSFER: THERMAL RADIATION, THERMOPHOTOVOLTAIC POWER GENERATION AND OPTICAL CHARACTERIZATION" (2010). University of Kentucky Doctoral Dissertations. Paper 58. ...
Novel Heterostructure Metal-Semiconductor-Metal
... SWE as a function of wavelength for four different active layer thicknesses: L2a=1175 Å (solid), L2b=2306 Å (dash), L2c=3438 Å (dot), L2d=4569 Å (dash dot) for a cavity with R2=1, ψ2=-π, and the material refractive index will not change with the wavelength. (a) in wavelength spectrum; (b) in frequen ...
... SWE as a function of wavelength for four different active layer thicknesses: L2a=1175 Å (solid), L2b=2306 Å (dash), L2c=3438 Å (dot), L2d=4569 Å (dash dot) for a cavity with R2=1, ψ2=-π, and the material refractive index will not change with the wavelength. (a) in wavelength spectrum; (b) in frequen ...
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.