chapter 4 starfish - Grupo de Óptica
... This thesis is devoted to the development of a technique for the measurement of the spatiotemporal amplitude and phase of ultrashort laser pulses and its applications. The core of the thesis is divided into three parts, which correspond to the presentation of the technique (Part I), its applications ...
... This thesis is devoted to the development of a technique for the measurement of the spatiotemporal amplitude and phase of ultrashort laser pulses and its applications. The core of the thesis is divided into three parts, which correspond to the presentation of the technique (Part I), its applications ...
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 ...
Topics in Adaptive Optics
... In Section 1, Dr Avila and Dr Rasouli support this volume with 2 chapters on optical turbulence aberration profiles, measurement, and characterization. Dr Avila’s chapter concentrates on a description of the turbulent atmosphere and parameters necessary to characterize it, such as index of refrac ...
... In Section 1, Dr Avila and Dr Rasouli support this volume with 2 chapters on optical turbulence aberration profiles, measurement, and characterization. Dr Avila’s chapter concentrates on a description of the turbulent atmosphere and parameters necessary to characterize it, such as index of refrac ...
Resolution enhancement techniques in microscopy
... medicine, microscopy is widely regarded an important discovery: advances in optical microscopy correlate well with advances in our understanding of biology, and medicine [Masters 2008; 2009a; 2009b]. Schellenberg edited a book with reprinted papers on the history of optical resolution and its applic ...
... medicine, microscopy is widely regarded an important discovery: advances in optical microscopy correlate well with advances in our understanding of biology, and medicine [Masters 2008; 2009a; 2009b]. Schellenberg edited a book with reprinted papers on the history of optical resolution and its applic ...
Raman microscopy in an electron microscope: combining chemical
... chemical composition of a sample can be identified [11]. The low frequency Stokes region of the Raman spectrum of vitamin E is shown in fig. 1.2. Thus, Raman spectroscopy can be used to study the molecular composition and changes in it caused by dynamic processes. Several spectral devices based most ...
... chemical composition of a sample can be identified [11]. The low frequency Stokes region of the Raman spectrum of vitamin E is shown in fig. 1.2. Thus, Raman spectroscopy can be used to study the molecular composition and changes in it caused by dynamic processes. Several spectral devices based most ...
Multiple-image digital photography
... Computational Imaging in the Sciences (and Medicine) Marc Levoy ...
... Computational Imaging in the Sciences (and Medicine) Marc Levoy ...
Theoretical modeling and evaluation of the axial resolution of the
... overcome the image degradation from ocular aberrations, Roorda et al.5 incorporated AO into a scanning laser ophthalmoscope 共SLO; the instrument will be hereafter referred to as the AOSLO兲 and they were able to provide the first real-time images of photoreceptors and blood flow in the human retina. ...
... overcome the image degradation from ocular aberrations, Roorda et al.5 incorporated AO into a scanning laser ophthalmoscope 共SLO; the instrument will be hereafter referred to as the AOSLO兲 and they were able to provide the first real-time images of photoreceptors and blood flow in the human retina. ...
Point spread function engineering in confocal scanning microscopy
... The improvement of the performance of optical microscopes has aimed many researches along the last decades. Conventional wide-field microscopes are close to reach their maximum efficiency through the use of the available objectives with numerical apertures (NA) up to 1.4. However, when using this ki ...
... The improvement of the performance of optical microscopes has aimed many researches along the last decades. Conventional wide-field microscopes are close to reach their maximum efficiency through the use of the available objectives with numerical apertures (NA) up to 1.4. However, when using this ki ...
Analysis And Design Of Wide-angle Foveated Optical
... Figure 3: The human eye [2]. ............................................................................................ 10 Figure 4: Cone and rod density versus angular field [4]. .................................................. 11 Figure 5: The SLM corrects the wavefront aberration at the fie ...
... Figure 3: The human eye [2]. ............................................................................................ 10 Figure 4: Cone and rod density versus angular field [4]. .................................................. 11 Figure 5: The SLM corrects the wavefront aberration at the fie ...
NAVAL POSTGRADUATE SCHOOL
... True-color composite depiction of the hyperspectral test image with cross track sun glint. Blue represents the (456–464 nm) band, green represents the (548–555 nm) band, and red represents the (637–645 nm) band. The red line represents the deep water ROI pixel locations of (1-320, 3000). .......29 ...
... True-color composite depiction of the hyperspectral test image with cross track sun glint. Blue represents the (456–464 nm) band, green represents the (548–555 nm) band, and red represents the (637–645 nm) band. The red line represents the deep water ROI pixel locations of (1-320, 3000). .......29 ...
Spectral Mixture Analysis for Monitoring and Mapping Desertification
... threat of continued land degradation and desertification, as result of climatic factors and human activities. Remote sensing and satellites imageries with temporal and synoptic view play a major role in developing a global and local operational capability for monitoring land degradation and desertif ...
... threat of continued land degradation and desertification, as result of climatic factors and human activities. Remote sensing and satellites imageries with temporal and synoptic view play a major role in developing a global and local operational capability for monitoring land degradation and desertif ...
Rodrigo Aviles‐Espinosa STRATEGIES FOR PUSHING NONLINEAR MICROSCOPY TOWARDS ITS PERFORMANCE LIMITS
... covered by the inherent advantages offered by nonlinear microscopy (NLM). However, to achieve its full potential there are still several issues that must be addressed. To do so, it is very important to identify and adapt the key elements in a NLM for achieving an optimized interaction among them. Th ...
... covered by the inherent advantages offered by nonlinear microscopy (NLM). However, to achieve its full potential there are still several issues that must be addressed. To do so, it is very important to identify and adapt the key elements in a NLM for achieving an optimized interaction among them. Th ...
development of fourier domain optical coherence
... maturation of the organism. Yet, to this date, the simple question of “what initiates cardiac pumping resulting in blood flow?” has not been answered. This is primarily because imaging tools have lacked the spatial, temporal and depth resolution to image the complete embryonic heart in development. ...
... maturation of the organism. Yet, to this date, the simple question of “what initiates cardiac pumping resulting in blood flow?” has not been answered. This is primarily because imaging tools have lacked the spatial, temporal and depth resolution to image the complete embryonic heart in development. ...
Enhanced 3D spatial resolution in quantitative phase
... coherence using a quadriwave lateral shearing interferometer (QWLSI) [15]. We consider an approach which is valid not only within the paraxial approximation [10] but for any collection numerical aperture (NAcoll ) and illumination numerical aperture (NAill ). The approach is based on SII contrast lo ...
... coherence using a quadriwave lateral shearing interferometer (QWLSI) [15]. We consider an approach which is valid not only within the paraxial approximation [10] but for any collection numerical aperture (NAcoll ) and illumination numerical aperture (NAill ). The approach is based on SII contrast lo ...
appel a projets recherche 2014 - lumat - Université Paris-Sud
... manner, and to probe their temporal evolution. These gradients are ideally provided by fully controlled photon beams, from the mid-IR to the XUV range: the manipulation of light pulses is therefore an essential component of ultrafast science. While in the optical wavelength region light manipulation ...
... manner, and to probe their temporal evolution. These gradients are ideally provided by fully controlled photon beams, from the mid-IR to the XUV range: the manipulation of light pulses is therefore an essential component of ultrafast science. While in the optical wavelength region light manipulation ...
Development of a Compact X-ray Source and Detector System for
... warm up time and have very low power consumption. With the CCNS emitter, a current density of more than 100 mA/cm2 is possible, and X-ray sources using this emitter can generate a short pulse of high-intensity X-rays. Moreover, we also demonstrated that CCNS emitters have a long lifetime even with a ...
... warm up time and have very low power consumption. With the CCNS emitter, a current density of more than 100 mA/cm2 is possible, and X-ray sources using this emitter can generate a short pulse of high-intensity X-rays. Moreover, we also demonstrated that CCNS emitters have a long lifetime even with a ...
Microscopy - PSSurvival.com
... Growth of protein crystals results in both protein and salt crystals. Both are colorless and microscopic. Recovery of the protein crystals requires imaging which can be done by the intrinsic fluorescence of the protein or by using transmission microscopy. Both methods require an ultraviolet microsco ...
... Growth of protein crystals results in both protein and salt crystals. Both are colorless and microscopic. Recovery of the protein crystals requires imaging which can be done by the intrinsic fluorescence of the protein or by using transmission microscopy. Both methods require an ultraviolet microsco ...
Digital Radiographic Image Acquisition and Processing
... Patient is exposed using the proper combination of kilovoltage peak, milliampere-seconds, and distance. Difference lies in how the exposure is recorded. In CR, remnant beam interacts with electrons in the barium fluorohalide crystals contained within the imaging plate. Interaction stimulates, or giv ...
... Patient is exposed using the proper combination of kilovoltage peak, milliampere-seconds, and distance. Difference lies in how the exposure is recorded. In CR, remnant beam interacts with electrons in the barium fluorohalide crystals contained within the imaging plate. Interaction stimulates, or giv ...
Measurement and correction of aberrations in light and electron
... found throughout the brain, blocking visible access to regions behind them (Haiss, et al., 2009). Visible light is strongly scattered by blood vessels, with the mean free path between scattering events as low as a few hundred microns (Vo-Dinh, 2003). In such an environment it is clear that for a tho ...
... found throughout the brain, blocking visible access to regions behind them (Haiss, et al., 2009). Visible light is strongly scattered by blood vessels, with the mean free path between scattering events as low as a few hundred microns (Vo-Dinh, 2003). In such an environment it is clear that for a tho ...
Partially coherent beam shaping and imaging
... pulses have non-identical wave forms. Optical coherence theory of stationary [1–4] and non-stationary [5–7] fields describes correlations between field fluctuations at two (or more) points in the spatial, angular, temporal, or spectral regime, and forms the basis of the work reported in this thesis. ...
... pulses have non-identical wave forms. Optical coherence theory of stationary [1–4] and non-stationary [5–7] fields describes correlations between field fluctuations at two (or more) points in the spatial, angular, temporal, or spectral regime, and forms the basis of the work reported in this thesis. ...
High-performance holographic technologies for fluid
... Enhancement by orders of magnitude in accuracy, precision, reproducibility, control, data-acquisition rate and information capacity can be envisaged using these new technologies, so that the quality of experimental data can be brought to higher standards. This review is structured as follows. In §3, ...
... Enhancement by orders of magnitude in accuracy, precision, reproducibility, control, data-acquisition rate and information capacity can be envisaged using these new technologies, so that the quality of experimental data can be brought to higher standards. This review is structured as follows. In §3, ...
Stabler, Graham (2005) High resolution wide field surface plasmon
... imaged 3A thick dielectric structures on the surface of silver ...
... imaged 3A thick dielectric structures on the surface of silver ...
Finding a needle in a haystack - Centre for Process Systems
... spectroscopy (SERS), which was discovered more than 30 years ago,[1] and atomic force microscopy (AFM). Tip-enhanced Raman scattering (TERS) has emerged as a promising technique that offers both rich chemical information and nanometer spatial resolution.[2-6] The idea of this approach is to probe sa ...
... spectroscopy (SERS), which was discovered more than 30 years ago,[1] and atomic force microscopy (AFM). Tip-enhanced Raman scattering (TERS) has emerged as a promising technique that offers both rich chemical information and nanometer spatial resolution.[2-6] The idea of this approach is to probe sa ...
Paper - University of Queensland
... spectral filters directly to the pixels, similar to pigmentation in animals [2]. Most color image sensors are constructed by monolithically integrated pixel-pitch-matched color filters (e.g., red, green, and blue color filters) with an array of complementary metal–oxide–semiconductor (CMOS) or charg ...
... spectral filters directly to the pixels, similar to pigmentation in animals [2]. Most color image sensors are constructed by monolithically integrated pixel-pitch-matched color filters (e.g., red, green, and blue color filters) with an array of complementary metal–oxide–semiconductor (CMOS) or charg ...
Hyperspectral imaging
Hyperspectral imaging, like other spectral imaging, collects and processes information from across the electromagnetic spectrum. The goal of hyperspectral imaging is to obtain the spectrum for each pixel in the image of a scene, with the purpose of finding objects, identifying materials, or detecting processes.Much as the human eye sees visible light in three bands (red, green, and blue), spectral imaging divides the spectrum into many more bands. This technique of dividing images into bands can be extended beyond the visible. In hyperspectral imaging, the recorded spectra have fine wavelength resolution and cover a wide range of wavelengths.Engineers build hyperspectral sensors and processing systems for applications in astronomy, agriculture, biomedical imaging, geosciences, physics, and surveillance. Hyperspectral sensors look at objects using a vast portion of the electromagnetic spectrum. Certain objects leave unique 'fingerprints' in the electromagnetic spectrum. Known as spectral signatures, these 'fingerprints' enable identification of the materials that make up a scanned object. For example, a spectral signature for oil helps geologists find new oil fields.