claudia patricia valdés escobar
... tremely useful to the diagnosis and monitoring of many diseases such as stroke, ischemic injuries, traumatic brain injury, as well as neurodegenerative diseases such as the Alzheimer’s [2, 3]. A stroke, is the rapid loss of cerebral functions (brain damage) due to a critical change in the CBF, i. e. ...
... tremely useful to the diagnosis and monitoring of many diseases such as stroke, ischemic injuries, traumatic brain injury, as well as neurodegenerative diseases such as the Alzheimer’s [2, 3]. A stroke, is the rapid loss of cerebral functions (brain damage) due to a critical change in the CBF, i. e. ...
NGAO NGS WFS design review - Caltech Optical Observatories
... • Wavefront error on input beam is 1.15 waves RMS (6 waves P-V) @ 600 nm at the extreme (and worst case) field points. This is mostly astigmatism. • As per KAON 685 we know that this corresponds to (y = ar^2 -> 0.69 *10^(-6) = 25 * a -> a = .276*10^(-7); dy/dr = 2*a*r ->dy/dr=0.2*10^(-6) ) [c.f. Fig ...
... • Wavefront error on input beam is 1.15 waves RMS (6 waves P-V) @ 600 nm at the extreme (and worst case) field points. This is mostly astigmatism. • As per KAON 685 we know that this corresponds to (y = ar^2 -> 0.69 *10^(-6) = 25 * a -> a = .276*10^(-7); dy/dr = 2*a*r ->dy/dr=0.2*10^(-6) ) [c.f. Fig ...
Coupling Efficiency and Alignment Sensitivity of Single
... solutions obtained are a set of orthogonal eigenfunctions. Each eigenfunction describes a propagating mode in the optical fiber waveguide. The fundamental propagating mode is of particular importance since an optical fiber can be designed which propagates light only in the fundamental mode. ...
... solutions obtained are a set of orthogonal eigenfunctions. Each eigenfunction describes a propagating mode in the optical fiber waveguide. The fundamental propagating mode is of particular importance since an optical fiber can be designed which propagates light only in the fundamental mode. ...
SOIL PENETROMETER WITH RAMAN SAMPLING
... 5.22 Necessary irradiance needed at the sample to saturate the pixel charge at one second of integration time ............................................................................. 91 5.23 Necessary irradiance at the sample needed to saturate the pixel charge of the uncooled CCD camera at one ...
... 5.22 Necessary irradiance needed at the sample to saturate the pixel charge at one second of integration time ............................................................................. 91 5.23 Necessary irradiance at the sample needed to saturate the pixel charge of the uncooled CCD camera at one ...
The Optical Beam Diameter Within the Beam
... but would require significant extra code development and testing. A measure of how effective a spatial filter would be can be derived from the system throughput curves shown in Figure 2: if most of the “bad light” has already been thrown away, then little light is left which can be profitably discar ...
... but would require significant extra code development and testing. A measure of how effective a spatial filter would be can be derived from the system throughput curves shown in Figure 2: if most of the “bad light” has already been thrown away, then little light is left which can be profitably discar ...
table of content - Photonics North
... to optics-photonics around the world (challenges, opportunities, trends...). The goal is to paint a picture of the international optics-photonics landscape in 2014. ...
... to optics-photonics around the world (challenges, opportunities, trends...). The goal is to paint a picture of the international optics-photonics landscape in 2014. ...
Introduction - Strathprints
... The epitaxial MCT samples were obtained from the QinetiQ Malvern Technology Centre (formerly the Defence and Evaluation Research Agency, Malvern, UK). These were grown using the inter-diffused multi-layer process by metal-organic vapour-phase epitaxy (IMP-MOVPE) on a vicinal GaAs {100} substrate34, ...
... The epitaxial MCT samples were obtained from the QinetiQ Malvern Technology Centre (formerly the Defence and Evaluation Research Agency, Malvern, UK). These were grown using the inter-diffused multi-layer process by metal-organic vapour-phase epitaxy (IMP-MOVPE) on a vicinal GaAs {100} substrate34, ...
High-performance holographic technologies for fluid
... This review is structured as follows. In §3, the basics of digital holographic storage technology are discussed with emphasize on the aspects that are most relevant to the design and actual implementation of the high-performance hydrodynamic experiments, including advanced optical imaging, high-prec ...
... This review is structured as follows. In §3, the basics of digital holographic storage technology are discussed with emphasize on the aspects that are most relevant to the design and actual implementation of the high-performance hydrodynamic experiments, including advanced optical imaging, high-prec ...
T R ECHNICAL ESEARCH
... changing with the upcoming new generation of wavefront compensation hardware: high-resolution liquid crystal (LC) spatial phase modulators and micro-electromechanical systems (MEMS) containing large arrays of LC cells or micro-mirrors.1-4 These new devices can potentially provide wavefront shaping w ...
... changing with the upcoming new generation of wavefront compensation hardware: high-resolution liquid crystal (LC) spatial phase modulators and micro-electromechanical systems (MEMS) containing large arrays of LC cells or micro-mirrors.1-4 These new devices can potentially provide wavefront shaping w ...
Disordered one-‐dimensional photonic structures composed by
... spin coating or co-‐extrusion, can be employed [15,19]. Recently, these materials are extensively studied since they find application in several fields, including photonics for low threshold laser ...
... spin coating or co-‐extrusion, can be employed [15,19]. Recently, these materials are extensively studied since they find application in several fields, including photonics for low threshold laser ...
Effective Area of Optical Fibres
... of their constituent materials because the optical field is confined to the small fibre core area over long distances. The confinement of the optical field within the core is achieved by the refractive index profile, which determines the field distribution of the fundamental mode. In general, optica ...
... of their constituent materials because the optical field is confined to the small fibre core area over long distances. The confinement of the optical field within the core is achieved by the refractive index profile, which determines the field distribution of the fundamental mode. In general, optica ...
Honors Physics Final Review Spring 2015
... ans reddish orange Rank high frequency to low: UV, FM, yellow ans: UV yellow FM What is the equation for magnification? ans: M = –q/p , M = -di/do What is q and p above? ans q = focal length p = distance to object ...
... ans reddish orange Rank high frequency to low: UV, FM, yellow ans: UV yellow FM What is the equation for magnification? ans: M = –q/p , M = -di/do What is q and p above? ans q = focal length p = distance to object ...
11: Waves and Imaging
... fringes are visible. The same principles just discussed may be used to determine the form of interference fringes from wavefronts with other shapes. Some examples will be considered in the following sections. ...
... fringes are visible. The same principles just discussed may be used to determine the form of interference fringes from wavefronts with other shapes. Some examples will be considered in the following sections. ...
moiré technique
... g t1 in the image plane. t1 then of course has to be scaled according to the image magnification. The resulting intensity becomes proportional to t1 · t2. 4. Image the reference grating given by t1 onto a photographic film and thereafter image the model grating given by t2 after deformation onto ano ...
... g t1 in the image plane. t1 then of course has to be scaled according to the image magnification. The resulting intensity becomes proportional to t1 · t2. 4. Image the reference grating given by t1 onto a photographic film and thereafter image the model grating given by t2 after deformation onto ano ...
Measurement and correction of aberrations in light and electron
... be caused either by the microscope itself or by the sample and can be compensated for by using an active element integrated into the beam path which is functioning as a corrector. The optimal settings for this corrector need to be determined without excessive damage to the sample. In particular, for ...
... be caused either by the microscope itself or by the sample and can be compensated for by using an active element integrated into the beam path which is functioning as a corrector. The optimal settings for this corrector need to be determined without excessive damage to the sample. In particular, for ...
Basic Interferometry and Optical Testing Two
... presented by Theocaris (1962, 1966). Books on this subject have been written by Guild (1956, 1960), Theocaris (1969), and Durelli and Parks (1970). Projection moiré techniques were introduced by Brooks and Helfinger (1969) for optical gauging and deformation measurement. Until 1970, advances in moir ...
... presented by Theocaris (1962, 1966). Books on this subject have been written by Guild (1956, 1960), Theocaris (1969), and Durelli and Parks (1970). Projection moiré techniques were introduced by Brooks and Helfinger (1969) for optical gauging and deformation measurement. Until 1970, advances in moir ...
Role of wavefront aberrations of amplified femtosecond pulses in
... 1.1. A brief history of intense ultrafast lasers .............................................................................. 17 1.1.1 The chirped pulse amplification technique ..................................................................... 18 1.1.2 A revolution in physics .................. ...
... 1.1. A brief history of intense ultrafast lasers .............................................................................. 17 1.1.1 The chirped pulse amplification technique ..................................................................... 18 1.1.2 A revolution in physics .................. ...
Ray-optics cloaking devices for large objects in incoherent natural light
... hide objects roughly one wavelength large (an optical wavelength equates to the scale of single-celled organisms) have been experimentally demonstrated in both the microwave4,7,10 and optical spectrum8,9,11. Successful attempts have also been made to allow the cloaking technology to be used at much ...
... hide objects roughly one wavelength large (an optical wavelength equates to the scale of single-celled organisms) have been experimentally demonstrated in both the microwave4,7,10 and optical spectrum8,9,11. Successful attempts have also been made to allow the cloaking technology to be used at much ...
Plasmonic metamaterials Review Kan Yao and Yongmin Liu*
... laws in electromagnetics that determines how light refracts at the interface between two media. As illustrated in Figure 3A, if light is incident from a positive-index material to a negative-index one, the refracted light lies on the same side as the incident light with respect to the surface normal ...
... laws in electromagnetics that determines how light refracts at the interface between two media. As illustrated in Figure 3A, if light is incident from a positive-index material to a negative-index one, the refracted light lies on the same side as the incident light with respect to the surface normal ...
Optical measurement of depth and duty cycle for
... tilt angles. The SOER method shows a factor of 2 less sensitivity to these deviations than the T⫹1兾T0 method, as expected. For the SOER method to give accurate duty cycle values, the depth of grating d must be known to sufficient accuracy. This is the case for gratings that are fabricated by etching ...
... tilt angles. The SOER method shows a factor of 2 less sensitivity to these deviations than the T⫹1兾T0 method, as expected. For the SOER method to give accurate duty cycle values, the depth of grating d must be known to sufficient accuracy. This is the case for gratings that are fabricated by etching ...
5 Optical Fibers
... fiber structure. These losses can be removed with refinements in the fabrication process and in the quality of glass. The presence of metallic and rare-earth impurities contributes to the extrinsic fiber loss as does the presence of the hydroxyl group OH that enters the glass through water vapors. T ...
... fiber structure. These losses can be removed with refinements in the fabrication process and in the quality of glass. The presence of metallic and rare-earth impurities contributes to the extrinsic fiber loss as does the presence of the hydroxyl group OH that enters the glass through water vapors. T ...