Recent advances in diffuse optical imaging
... • A tomographic approach to imaging, which involves placing sources and detectors over the available surface of the tissue in order to sample multiple lines-of-sight across the entire volume either simultaneously or successively. Images are then reconstructed using techniques such as those described ...
... • A tomographic approach to imaging, which involves placing sources and detectors over the available surface of the tissue in order to sample multiple lines-of-sight across the entire volume either simultaneously or successively. Images are then reconstructed using techniques such as those described ...
Principles, Instrumentation, and Applications of Infrared Multispectral
... somewhat limits applications of the quartz-based AOTFs (Tran and Lu 1995). Furthermore, the collinear configuration renders this type of AOTF difficult to use in multispectral imaging instruments, because the transmitted (undiffracted) light is spatially in the same direction as the diffracted light ...
... somewhat limits applications of the quartz-based AOTFs (Tran and Lu 1995). Furthermore, the collinear configuration renders this type of AOTF difficult to use in multispectral imaging instruments, because the transmitted (undiffracted) light is spatially in the same direction as the diffracted light ...
High Harmonic Generation for Coherent Diffractive Imaging
... 1200 grooves/mm-grating of the monochromator Setpoint GIMS#4, spectral range from 4.4 nm to 10.6 nm). Thus, the diffracted harmonic beam may consist of several harmonic orders instead of one single harmonic order. ...
... 1200 grooves/mm-grating of the monochromator Setpoint GIMS#4, spectral range from 4.4 nm to 10.6 nm). Thus, the diffracted harmonic beam may consist of several harmonic orders instead of one single harmonic order. ...
The Optics of the Mach-Zehnder Interferometer
... and of two which do not appear to have been described previously. Of these, one is a method for obtaining a parallelogram arrangement, which was used by K. J. Habell, and the other is an accurate method for final adjustment based on the source-plane fringe pattern. ...
... and of two which do not appear to have been described previously. Of these, one is a method for obtaining a parallelogram arrangement, which was used by K. J. Habell, and the other is an accurate method for final adjustment based on the source-plane fringe pattern. ...
Magnetite from magnetotactic bacteria: Size distributions and twinning
... We studied intracellular magnetite particles produced by several morphological types of magnetotactic bacteria including the spirillar (helical) freshwater species, Magnetospirillum magnetotacticum, and four incompletely characterized marine strains: MV-1, a curved rodshaped bacterium; MC-1 and MC-2 ...
... We studied intracellular magnetite particles produced by several morphological types of magnetotactic bacteria including the spirillar (helical) freshwater species, Magnetospirillum magnetotacticum, and four incompletely characterized marine strains: MV-1, a curved rodshaped bacterium; MC-1 and MC-2 ...
Growth and Nano-structural Studies of Metallic Multilayers for X-ray Mirrors Naureen Ghafoor
... refraction. Further, a use of thicker lenses in order to get noticeable refraction, is also obstructed by the highly absorbing nature of matter for soft X-rays. An exception to this, is total external reflection of X-rays at very low incident angles, which allows to use large sized singly coated gra ...
... refraction. Further, a use of thicker lenses in order to get noticeable refraction, is also obstructed by the highly absorbing nature of matter for soft X-rays. An exception to this, is total external reflection of X-rays at very low incident angles, which allows to use large sized singly coated gra ...
The Crystal Structure and Genesis of the Gold
... the unit-cell of each sample based on the hkl data collected during the scan, verifying its identification as one of the gold telluride minerals. If the initial scans returned high quality data, intensity data were collected through a series of chi and omega scans covering a full sphere of reciproca ...
... the unit-cell of each sample based on the hkl data collected during the scan, verifying its identification as one of the gold telluride minerals. If the initial scans returned high quality data, intensity data were collected through a series of chi and omega scans covering a full sphere of reciproca ...
Brief Review of Liquid Crystals
... shape should not exist? They will run into a fluid while their physical properties should be anisotropic like those of other crystals and they should grow from oversaturated solutions. Cholesterolbenzoate was undoubtedly one of such liquid crystals. That reasoning of Leman resulted in the discovery ...
... shape should not exist? They will run into a fluid while their physical properties should be anisotropic like those of other crystals and they should grow from oversaturated solutions. Cholesterolbenzoate was undoubtedly one of such liquid crystals. That reasoning of Leman resulted in the discovery ...
Theory and Practice of Scanning Optical Microscopy - X
... It may be shown that a thin lens constructed from a dielectric medium with two spherical surfaces gives the required phase variations [2.1]. A real lens also has a finite physical size. The effect of this may be taken into account by introducing the pupil function of the lens P(x, y), which is unity ...
... It may be shown that a thin lens constructed from a dielectric medium with two spherical surfaces gives the required phase variations [2.1]. A real lens also has a finite physical size. The effect of this may be taken into account by introducing the pupil function of the lens P(x, y), which is unity ...
Fabrication of Multi-wavelength Optical Reflector using On
... small period, only the Zero order diffraction remains because higher order diffraction are suppressed. When the grating period is lesser than the wavelength, the grating behaves as a uniform layer with effective refractive index among the material index and surrounding index. The applications of sub ...
... small period, only the Zero order diffraction remains because higher order diffraction are suppressed. When the grating period is lesser than the wavelength, the grating behaves as a uniform layer with effective refractive index among the material index and surrounding index. The applications of sub ...
Single-Atom Resolved Imaging and Manipulation in an Atomic Mott
... we apply in Chapter 5 to obtain single-site resolved images of Mott insulators, featuring the number squeezing and the shell structure. Chapter 6 explains our scheme for addressing the spin of single atoms in the lattice, which we use to study the singleparticle tunneling dynamics in a lattice, desc ...
... we apply in Chapter 5 to obtain single-site resolved images of Mott insulators, featuring the number squeezing and the shell structure. Chapter 6 explains our scheme for addressing the spin of single atoms in the lattice, which we use to study the singleparticle tunneling dynamics in a lattice, desc ...
OPTI 517 Image Quality
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
Role of wavefront aberrations of amplified femtosecond pulses in
... STARFISH: Spatio-Temporal Amplitude and phase Reconstruction by Fourier-transform of Interference Spectra of High-complex-beams SVEA: Slowly Varying Envelope amplitude Approximation THG: Third Harmonic Generation X-FROG: Cross- Frequency Resolved Optical Gating WFS: Wavefront Sensor ...
... STARFISH: Spatio-Temporal Amplitude and phase Reconstruction by Fourier-transform of Interference Spectra of High-complex-beams SVEA: Slowly Varying Envelope amplitude Approximation THG: Third Harmonic Generation X-FROG: Cross- Frequency Resolved Optical Gating WFS: Wavefront Sensor ...
Lithography Lecture #1
... microns. Mask image:Resist image is 1:1. Limited by near field (Fresnel diffraction) diffraction Projection Aligner: photoresist is not in intimate contact with mask ⎯mask image is projected onto resist by lenses. Limited by far field (Fraunoffer diffraction) diffraction 6.152J / 3.155J Spring Term ...
... microns. Mask image:Resist image is 1:1. Limited by near field (Fresnel diffraction) diffraction Projection Aligner: photoresist is not in intimate contact with mask ⎯mask image is projected onto resist by lenses. Limited by far field (Fraunoffer diffraction) diffraction 6.152J / 3.155J Spring Term ...
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 ...
Measurement and correction of aberrations in light and electron
... the supervision of Dr. Laurent Bourdieu, at the Institut Langevin, ESPCI ParisTech under the supervision of Prof. Dr. Claude Boccara and at the Max Planck Institute for Medical Research (Heidelberg), Germany, in the department of Biomedical Optics under the supervision of Prof. Dr. Winfried Denk. I ...
... the supervision of Dr. Laurent Bourdieu, at the Institut Langevin, ESPCI ParisTech under the supervision of Prof. Dr. Claude Boccara and at the Max Planck Institute for Medical Research (Heidelberg), Germany, in the department of Biomedical Optics under the supervision of Prof. Dr. Winfried Denk. I ...
Design and Fabrication of a Superprism
... A superprism is an optical device which enhances the effects of a conventional prism in two ways: it disperses multiple wavelengths of light and allows for highly sensitive steering of a single wavelength beam over much wider angles than in a conventional prism. Photonic crystals offer an exciting n ...
... A superprism is an optical device which enhances the effects of a conventional prism in two ways: it disperses multiple wavelengths of light and allows for highly sensitive steering of a single wavelength beam over much wider angles than in a conventional prism. Photonic crystals offer an exciting n ...
An introduction to medical imaging with coherent terahertz
... materials more sensitively than previous spectroscopic methods in this range (Grischkowsky et al 1990, Kindt and Schmuttenmaer 1996, van Exter and Grischkowsky 2001). The technique can be extended to terahertz pulsed imaging (TPI), which can be used in either transmission or reflection geometries. T ...
... materials more sensitively than previous spectroscopic methods in this range (Grischkowsky et al 1990, Kindt and Schmuttenmaer 1996, van Exter and Grischkowsky 2001). The technique can be extended to terahertz pulsed imaging (TPI), which can be used in either transmission or reflection geometries. T ...
A Michelson interferometric technique for measuring refractive index
... The optical setup for the Michelson interferometer is shown schematically in Fig. 4. Light from a Helium Neon source S (wavelength of 633nm) is deflected through a mirror M3 and strikes the beam splitter B. The beam splitter is a half-silvered glass plate (silvered on the back side) which reflects ...
... The optical setup for the Michelson interferometer is shown schematically in Fig. 4. Light from a Helium Neon source S (wavelength of 633nm) is deflected through a mirror M3 and strikes the beam splitter B. The beam splitter is a half-silvered glass plate (silvered on the back side) which reflects ...
Bessel beams: diffraction in a new light
... minimum diameter of 34l with l being the beam wavelength [1]) which did not spread. Of course the reality is a little more down to earth. A Bessel beam gets its name from the description of such a beam using a Bessel function, and this leads to a predicted cross-sectional profile of a set of concentr ...
... minimum diameter of 34l with l being the beam wavelength [1]) which did not spread. Of course the reality is a little more down to earth. A Bessel beam gets its name from the description of such a beam using a Bessel function, and this leads to a predicted cross-sectional profile of a set of concentr ...
Confocal optical microscopy
... photons on the object. This includes sources with wavelengths from the ultraviolet (say 250 nm) to the far infrared (∼ 3 µm), with incoherent white light from incandescent filaments being the most common. Lasers have high radiance and are monochromatic. Their coherence leads to differences in imagin ...
... photons on the object. This includes sources with wavelengths from the ultraviolet (say 250 nm) to the far infrared (∼ 3 µm), with incoherent white light from incandescent filaments being the most common. Lasers have high radiance and are monochromatic. Their coherence leads to differences in imagin ...
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 ...
Simultaneous spatial and temporal focusing: A route towards
... around the focal region.12, 21, 22 To provide a deeper insight into the SSTF pulse propagation, Figure 3 presents x/t-intensity profiles nearby the focal plane comparing pulses focused conventionally and using SSTF. For this numerical simulation, a ‘Forward Maxwell equation’ (FME) was used to study ...
... around the focal region.12, 21, 22 To provide a deeper insight into the SSTF pulse propagation, Figure 3 presents x/t-intensity profiles nearby the focal plane comparing pulses focused conventionally and using SSTF. For this numerical simulation, a ‘Forward Maxwell equation’ (FME) was used to study ...
Microscopy - PSSurvival.com
... microscopy) lie in three areas; ◾ This technique can only image dark or strongly refracting objects effectively. ◾ Diffraction limits resolution to approximately 0.2 micrometres (see: microscope). This limits the practical magnification limit to ~1500x. ◾ Out of focus light from points outside the f ...
... microscopy) lie in three areas; ◾ This technique can only image dark or strongly refracting objects effectively. ◾ Diffraction limits resolution to approximately 0.2 micrometres (see: microscope). This limits the practical magnification limit to ~1500x. ◾ Out of focus light from points outside the f ...