DESIGN, FABRICATION AND CHARACTERIZATION OF GUIDED
... an example a-Si film deposited on a 4-inch (100) Si wafer .............................................. 15 Figure 3-3 Surface roughness data as a function of annealing temperature. The solid line acts as a visual aid. ................................................................................. ...
... an example a-Si film deposited on a 4-inch (100) Si wafer .............................................. 15 Figure 3-3 Surface roughness data as a function of annealing temperature. The solid line acts as a visual aid. ................................................................................. ...
Novel Metrology Techniques Resolve Strong-Field
... capable of resolving the electric field of optical waveforms. However, this poses an experimental challenge: How can we resolve light-field oscillations which are among the fastest reproducible signals we can generate in a laboratory? This dissertation aims at the improvement and development of nove ...
... capable of resolving the electric field of optical waveforms. However, this poses an experimental challenge: How can we resolve light-field oscillations which are among the fastest reproducible signals we can generate in a laboratory? This dissertation aims at the improvement and development of nove ...
McIntyre, Stuart (2013) Limitations to light microscope resolution in
... optical sectioning microscope methods that are currently available in many biological labs. These include confocal, two-photon and selective illumination microscopes . The resolution capabilities of these systems and the associated objective lenses were investigated to determine the optimum conditio ...
... optical sectioning microscope methods that are currently available in many biological labs. These include confocal, two-photon and selective illumination microscopes . The resolution capabilities of these systems and the associated objective lenses were investigated to determine the optimum conditio ...
Thermal and electrical properties of - Ruhr
... high quality appropriate substrates are required. A good choice of the substrate in electronic or opto-electronic nano-devices is detrimental task of the design process. Hence, monitoring of quality of the substrate during technological process is very important task. Whereas the development of char ...
... high quality appropriate substrates are required. A good choice of the substrate in electronic or opto-electronic nano-devices is detrimental task of the design process. Hence, monitoring of quality of the substrate during technological process is very important task. Whereas the development of char ...
High Harmonic Generation for Coherent Diffractive Imaging
... the sampled spectrum. Diffraction patterns of wide dynamic range can be acquired by means of a new design involving a beam stop and image stitching. Binary and non-binary periodic and non-periodic samples have been successfully reconstructed. It is noted that the employment of multiple-wavelength co ...
... the sampled spectrum. Diffraction patterns of wide dynamic range can be acquired by means of a new design involving a beam stop and image stitching. Binary and non-binary periodic and non-periodic samples have been successfully reconstructed. It is noted that the employment of multiple-wavelength co ...
Method and apparatus for gas discharge laser output light
... symmetry but also have a bene?cial impact on the spatial coherence of the beam, since by there intrinsic behavior such optics can, e.g., shift the position of coherence cells. ...
... symmetry but also have a bene?cial impact on the spatial coherence of the beam, since by there intrinsic behavior such optics can, e.g., shift the position of coherence cells. ...
Topics in Adaptive Optics
... The main effect of those perturbations on imaging systems is to diminish the attainable angular resolution, whereas on free-space laser communications the turbulence drastically affects system performances. Adaptive Optical (AO) methods are aimed at reducing those cumbersome effects by correcting th ...
... The main effect of those perturbations on imaging systems is to diminish the attainable angular resolution, whereas on free-space laser communications the turbulence drastically affects system performances. Adaptive Optical (AO) methods are aimed at reducing those cumbersome effects by correcting th ...
Achromatic correction of diffractive dispersion in white light SLM
... a mutual elimination of the material dispersion of the corrector and the diffractive dispersion of the SLM. Even in a cooperation with the corrector, the SLM works as an independent device. Its initial operation is maintained for the central wavelength, and only other spectral components are influen ...
... a mutual elimination of the material dispersion of the corrector and the diffractive dispersion of the SLM. Even in a cooperation with the corrector, the SLM works as an independent device. Its initial operation is maintained for the central wavelength, and only other spectral components are influen ...
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 ...
... 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 ...
Full text in DIVA
... In the present work, a method to quantify the collagen structure by its second-order susceptibility in tissue was developed and exploited. The procedure is carried out in a laser scanning microscope setup, thus allowing us to extract SHGrelevant parameters in the same sample configuration as used fo ...
... In the present work, a method to quantify the collagen structure by its second-order susceptibility in tissue was developed and exploited. The procedure is carried out in a laser scanning microscope setup, thus allowing us to extract SHGrelevant parameters in the same sample configuration as used fo ...
15. Atmospheric Channel Effects and the Impact on
... energy to the molecular constituents of the atmosphere. It exhibits a strong dependence on wavelength [2,3]. Atmospheric scattering due to molecular sized particles is called Rayleigh scattering. For objects large compared to the wavelength, Mie scattering occurs. Rayleigh scattering is dominant for ...
... energy to the molecular constituents of the atmosphere. It exhibits a strong dependence on wavelength [2,3]. Atmospheric scattering due to molecular sized particles is called Rayleigh scattering. For objects large compared to the wavelength, Mie scattering occurs. Rayleigh scattering is dominant for ...
Gaussian Beam Optics [Hecht Ch. 13.1 pages 594
... Experimentally, one can use a CCD detector array to measure how the irradiance various across the beam for several values of z>>zR. Then fit the data for each z using Eq. (1), which will yield values for w(z). Then one can use Eqs. (3) and (4) to determine w0 and calculate zR. ...
... Experimentally, one can use a CCD detector array to measure how the irradiance various across the beam for several values of z>>zR. Then fit the data for each z using Eq. (1), which will yield values for w(z). Then one can use Eqs. (3) and (4) to determine w0 and calculate zR. ...
Adaptive-Optics Compensation through a High-Gain Raman Amplifier of
... called "Raman look-through." SRS is a nonlinear optical scattering process that couples two beams traversing a Raman-active medium that serves as an amplifier. The nonlinear response of the medium amplifies one beam (the oscillator) at the expense of the other (the pump). See the adjoining box for a ...
... called "Raman look-through." SRS is a nonlinear optical scattering process that couples two beams traversing a Raman-active medium that serves as an amplifier. The nonlinear response of the medium amplifies one beam (the oscillator) at the expense of the other (the pump). See the adjoining box for a ...
to Thin Section Microscopy - Mineralogical Society of America
... Furthermore, α, β, γ are crystallographic cell parameters, and hence any potential confusion with optical parameters should be avoided. In the same way as in nx, ny and nz, the subscripts o and e relate to refractive indices of O- and E-rays or O- and E-waves in uniaxial crystals. In Optical Mineral ...
... Furthermore, α, β, γ are crystallographic cell parameters, and hence any potential confusion with optical parameters should be avoided. In the same way as in nx, ny and nz, the subscripts o and e relate to refractive indices of O- and E-rays or O- and E-waves in uniaxial crystals. In Optical Mineral ...
Sensitivity of Cirrus Bidirectional Reflectance to Vertical
... A common assumption in satellite imager-based cirrus retrieval algorithms is that the radiative properties of a cirrus cloud may be represented by those associated with a specific ice crystal shape (or habit) and a single particle size distribution. However, observations of cirrus clouds have shown ...
... A common assumption in satellite imager-based cirrus retrieval algorithms is that the radiative properties of a cirrus cloud may be represented by those associated with a specific ice crystal shape (or habit) and a single particle size distribution. However, observations of cirrus clouds have shown ...
MEASUREMENT AND COMPARISON OF REFRACTIVE INDEX OF
... Refractive index is an important optical parameter that exhibits the optical properties of materials. Single-Diffraction Method (SDM) and Abbe’s Refractometer Method (ARM) have been used for the measurements of refractive indices of twelve water samples collected from different surface water sources ...
... Refractive index is an important optical parameter that exhibits the optical properties of materials. Single-Diffraction Method (SDM) and Abbe’s Refractometer Method (ARM) have been used for the measurements of refractive indices of twelve water samples collected from different surface water sources ...
LIGHT GENERATION AND MANIPULATION FROM NONLINEAR RANDOMLY DISTRIBUTED DOMAINS IN SBN
... by recent works in the control of linear light scattering through random media, we implement a novel method to re-concentrate the scattered light generation in random nonlinear materials. This chapter contains three sections. The first section provides a general introduction to linear light propagat ...
... by recent works in the control of linear light scattering through random media, we implement a novel method to re-concentrate the scattered light generation in random nonlinear materials. This chapter contains three sections. The first section provides a general introduction to linear light propagat ...
Design and use of guided mode resonance filters for
... Even though the principles of diffraction had been known since the time of Newton, it was Rittenhouse who in 1786, produced the first man-made diffraction grating from hairs spaced by the threads of two fine screws [1]. Years later, in 1902, Wood noticed unexpected rapid intensity variations in ligh ...
... Even though the principles of diffraction had been known since the time of Newton, it was Rittenhouse who in 1786, produced the first man-made diffraction grating from hairs spaced by the threads of two fine screws [1]. Years later, in 1902, Wood noticed unexpected rapid intensity variations in ligh ...
Assessment of optical systems by means of point
... It was mentioned above that the assessment of the quality of a highly specified optical system has to be done in the wavefront domain down to a fraction of the wavelength of the light. Interferometric methods are mostly used for this purpose. Although the achievable precision is very high, these met ...
... It was mentioned above that the assessment of the quality of a highly specified optical system has to be done in the wavefront domain down to a fraction of the wavelength of the light. Interferometric methods are mostly used for this purpose. Although the achievable precision is very high, these met ...
Basic Principles and Applications of Holography
... hologram. Thus, the image consists of light reflected by the hologram. Recently, these holograms have been made and displayed in color—their images optically indistinguishable from the original objects. If a mirror is the object, the holographic image of the mirror reflects white light; if a diamond ...
... hologram. Thus, the image consists of light reflected by the hologram. Recently, these holograms have been made and displayed in color—their images optically indistinguishable from the original objects. If a mirror is the object, the holographic image of the mirror reflects white light; if a diamond ...
Optical properties scattering - IMT
... Unless the light beam is propagating right into your eye or is scattered into it, you won t see it. This is true for laser light and flashlights. This is due to the facts that air is very sparse (N is relatively small), air is also not a strong scatterer, and the scattering is incoherent. This eye s ...
... Unless the light beam is propagating right into your eye or is scattered into it, you won t see it. This is true for laser light and flashlights. This is due to the facts that air is very sparse (N is relatively small), air is also not a strong scatterer, and the scattering is incoherent. This eye s ...
Nonlinear interfaces: intrinsically nonparaxial regimes and effects
... in the description of propagation phenomena. The field of nonlinear optics is not an exception, and during the last few decades there have been various contributions to the understanding of the evolution of wavepackets or beams at a planar boundary separating nonlinear media. The first studies of no ...
... in the description of propagation phenomena. The field of nonlinear optics is not an exception, and during the last few decades there have been various contributions to the understanding of the evolution of wavepackets or beams at a planar boundary separating nonlinear media. The first studies of no ...
Microscopy - Frank`s Hospital Workshop
... Vertico SMI - SPDMphymod Superresolution Microscopy Localization Microscopy/Spatially Structured Illumination Around 1995, Christoph Cremer commenced with the development of a light microscopic process, which achieved a substantially improved size resolution of cellular nanostructures stained with a ...
... Vertico SMI - SPDMphymod Superresolution Microscopy Localization Microscopy/Spatially Structured Illumination Around 1995, Christoph Cremer commenced with the development of a light microscopic process, which achieved a substantially improved size resolution of cellular nanostructures stained with a ...
Phase-contrast X-ray imaging
Phase-contrast X-ray imaging (PCI) or phase-sensitive X-ray imaging is a general term for different technical methods that use information concerning changes in the phase of an X-ray beam that passes through an object in order to create its images. Standard X-ray imaging techniques like radiography or computed tomography (CT) rely on a decrease of the X-ray beam's intensity (attenuation) when traversing the sample, which can be measured directly with the assistance of an X-ray detector. In PCI however, the beam's phase shift caused by the sample is not measured directly, but is transformed into variations in intensity, which then can be recorded by the detector.In addition to producing projection images, PCI, like conventional transmission, can be combined with tomographic techniques to obtain the 3D distribution of the real part of the refractive index of the sample. When applied to samples that consist of atoms with low atomic number Z, PCI is more sensitive to density variations in the sample than conventional transmission-based X-ray imaging. This leads to images with improved soft tissue contrast.In the last several years, a variety of phase-contrast X-ray imaging techniques have been developed, all of which are based on the observation of interference patterns between diffracted and undiffracted waves. The most common techniques are crystal interferometry, propagation-based imaging, analyzer-based imaging, edge-illumination and grating-based imaging (see below).