Mark J. Mannis, MD
... Meaningful vision science comes in many forms and ranges from very basic discoveries in the laboratory to applications of new knowledge in translation to the bedside, and from novel medical and surgical treatments by clinical trials to the study and report of disease trends in the population. The ka ...
... Meaningful vision science comes in many forms and ranges from very basic discoveries in the laboratory to applications of new knowledge in translation to the bedside, and from novel medical and surgical treatments by clinical trials to the study and report of disease trends in the population. The ka ...
Stimulated Brillouin scattering parasitics in large
... In conclusion, a simple analytic expression has been developed to analyze transverse SBS geometries. This analytic form agrees well with the results of a separate exact computer model. SBS thresholds for narrow-band pump light are in the kilojoule regime for UV pulses of the order of 10 nsec. Two me ...
... In conclusion, a simple analytic expression has been developed to analyze transverse SBS geometries. This analytic form agrees well with the results of a separate exact computer model. SBS thresholds for narrow-band pump light are in the kilojoule regime for UV pulses of the order of 10 nsec. Two me ...
Chapter2 Interaction Characteristics of Light
... at 1550 nm is 8 to 11µm with deviation less than 10%. It is a performance measure of fibre when coupled to light source. www.bzupages.com ...
... at 1550 nm is 8 to 11µm with deviation less than 10%. It is a performance measure of fibre when coupled to light source. www.bzupages.com ...
Introduction to Inverse Problems
... assuming quantum mechanical effects are at sub-nanometer scales, i.e. much smaller than the scales of interest (100nm or more) – i.e. the object dimension is uncountably infinite • The measurement is “discrete,” therefore countable and finite • To be able to create a “1-1” object representation from ...
... assuming quantum mechanical effects are at sub-nanometer scales, i.e. much smaller than the scales of interest (100nm or more) – i.e. the object dimension is uncountably infinite • The measurement is “discrete,” therefore countable and finite • To be able to create a “1-1” object representation from ...
Heritability of Macular Pigment: A Twin Study
... retinal pigment epithelium (RPE), and is described in detail elsewhere.34 Lipofuscin AF can be excited in vivo by wavelengths of light between 400 and 570 nm, and AF is emitted in the range of 520 to 800 nm.35,36 As the MP absorption range (400 –550 nm) is within the excitation range of lipofuscin,3 ...
... retinal pigment epithelium (RPE), and is described in detail elsewhere.34 Lipofuscin AF can be excited in vivo by wavelengths of light between 400 and 570 nm, and AF is emitted in the range of 520 to 800 nm.35,36 As the MP absorption range (400 –550 nm) is within the excitation range of lipofuscin,3 ...
H2 Raman overtone intensities measured for
... SF6 ), lor due to coincidence of the incident light frequency with a vibronic transition frequency (e.g., resonance Raman spectrum ofI2).2 The only published observations of un enhanced Raman vibrational transitions for diatomic molecules are the result of recent experiments with D 2, N 2, and O 2 • ...
... SF6 ), lor due to coincidence of the incident light frequency with a vibronic transition frequency (e.g., resonance Raman spectrum ofI2).2 The only published observations of un enhanced Raman vibrational transitions for diatomic molecules are the result of recent experiments with D 2, N 2, and O 2 • ...
www2
... Since its construction half a century ago, lasers as powerful light sources have been commonly used in optical investigations of biological systems. In contrast to classical (thermal or cold) light sources, most lasers have very large energy, short exposure time, small divergence and narrow spectral ...
... Since its construction half a century ago, lasers as powerful light sources have been commonly used in optical investigations of biological systems. In contrast to classical (thermal or cold) light sources, most lasers have very large energy, short exposure time, small divergence and narrow spectral ...
K.C. Neuman and S.M. Block, "Optical Trapping"
... is a net momentum transfer to the particle from the incident photons. For an isotropic scatter, the resulting forces cancel in all but the forward direction, and an effective scattering cross section can be calculated for the object. For most conventional situations, the scattering force dominates. ...
... is a net momentum transfer to the particle from the incident photons. For an isotropic scatter, the resulting forces cancel in all but the forward direction, and an effective scattering cross section can be calculated for the object. For most conventional situations, the scattering force dominates. ...
Simplified description of optical forces acting on a nanoparticle in
... of nano-objects1,2 and micro-objects,1,3 measurement of extremely weak forces,4,5 and study of single molecule properties6,7 and surface properties.8–11 The most frequently used trapping set-up is based on a single laser beam tightly focused by an immersion microscope objective of high numerical ape ...
... of nano-objects1,2 and micro-objects,1,3 measurement of extremely weak forces,4,5 and study of single molecule properties6,7 and surface properties.8–11 The most frequently used trapping set-up is based on a single laser beam tightly focused by an immersion microscope objective of high numerical ape ...
Effective Wavelength Scaling for Optical Antennas
... rod excited with 514 nm the resonance length was found to be L 75 nm, from which one derives eff ...
... rod excited with 514 nm the resonance length was found to be L 75 nm, from which one derives eff ...
Strong enhancement of light extraction efficiency in GaInAsP 2D
... wafers was pumped by continuous-wave (CW) light of nm. The focused spot diameter of the pump light was 30 m, and the irradiated power density was 30 kW/cm2 . The fiber tip was put close to the cleaved facet. When the fiber tip was moved up and down along the vertical direction, a position was found, ...
... wafers was pumped by continuous-wave (CW) light of nm. The focused spot diameter of the pump light was 30 m, and the irradiated power density was 30 kW/cm2 . The fiber tip was put close to the cleaved facet. When the fiber tip was moved up and down along the vertical direction, a position was found, ...
Fast-light for astrophysics - Laboratory for Atomic and Photonic
... interferometer (also illustrated in figure 1, with dashed lines) to form arm end cavities that are resonant for the carrier frequency. This allows the power in the arms to be high, so that the sidebands created have larger amplitudes, while keeping the power on the beamsplitter low, decreasing the di ...
... interferometer (also illustrated in figure 1, with dashed lines) to form arm end cavities that are resonant for the carrier frequency. This allows the power in the arms to be high, so that the sidebands created have larger amplitudes, while keeping the power on the beamsplitter low, decreasing the di ...
Holographic fabrication of 3D photonic crystals using silicon based
... electromagnetic wave propagation is forbidden [1,2]. Studies of photonic crystals have been driven by their potential applications. One-dimensional PhCs such as fiber Bragg gratings can be fabricated easily for applications in fiber optical communications and fiber sensors [3]. Two-dimensional PhCs ...
... electromagnetic wave propagation is forbidden [1,2]. Studies of photonic crystals have been driven by their potential applications. One-dimensional PhCs such as fiber Bragg gratings can be fabricated easily for applications in fiber optical communications and fiber sensors [3]. Two-dimensional PhCs ...
Large-area picosecond laser-induced periodic surface
... (LIPSS) on flat and cylindrical metal surfaces. Especially in this area of applications two effects of LIPSS could be interesting. Due to the strong periodic wave structure a spectral optical effect can be achieved. Using a white light source, light with a specific wavelength can be observed under a ...
... (LIPSS) on flat and cylindrical metal surfaces. Especially in this area of applications two effects of LIPSS could be interesting. Due to the strong periodic wave structure a spectral optical effect can be achieved. Using a white light source, light with a specific wavelength can be observed under a ...
Tuneable, stabilised diode lasers for compact atomic frequency
... While ultimate state-of-the-art performance of much larger laboratory devices will in most cases be superior to the stability and precision of the laser modules discussed here, a compact device offers the potential for, e.g. mobile applications with volume restrictions or applications requiring larg ...
... While ultimate state-of-the-art performance of much larger laboratory devices will in most cases be superior to the stability and precision of the laser modules discussed here, a compact device offers the potential for, e.g. mobile applications with volume restrictions or applications requiring larg ...
Paper
... w0 by 40% would account for this discrepancy). Finally, due to the large detuning, the spontaneous scattering rate is small (5 3 1023 s21 per mK trap depth), leading to an estimated trapping time of 400 s. Condensates were transferred into the optical trap by holding them in a steady magnetic trap w ...
... w0 by 40% would account for this discrepancy). Finally, due to the large detuning, the spontaneous scattering rate is small (5 3 1023 s21 per mK trap depth), leading to an estimated trapping time of 400 s. Condensates were transferred into the optical trap by holding them in a steady magnetic trap w ...
Medical applications of Terahertz Imaging: a Review of Current
... When compared to established medical imaging modalities THz imaging is a slow process. The fastest systems boast acquisition rates of thousands of pixels per second while the slowest take several seconds to acquire each pixel. Since sources are expensive, it is usual for an imaging system to employ ...
... When compared to established medical imaging modalities THz imaging is a slow process. The fastest systems boast acquisition rates of thousands of pixels per second while the slowest take several seconds to acquire each pixel. Since sources are expensive, it is usual for an imaging system to employ ...
Hyperbolic Secant Squared Pulse Shape
... effects on a pulse, one in space and the other in time. Dispersion disperses a pulse in space (angle): “Angular dispersion” ...
... effects on a pulse, one in space and the other in time. Dispersion disperses a pulse in space (angle): “Angular dispersion” ...
Experimental implementation of the gyrator transform - E
... to the polarization Poincaré sphere. The GT can be considered a universal mode converter, since it allows the generation of all essentially different structurally stable Gaussian modes, which can be obtained from the Hermite–Gaussian (HG) modes by the integral canonical transforms [7]. To use the GT ...
... to the polarization Poincaré sphere. The GT can be considered a universal mode converter, since it allows the generation of all essentially different structurally stable Gaussian modes, which can be obtained from the Hermite–Gaussian (HG) modes by the integral canonical transforms [7]. To use the GT ...
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... from the simplicity of the set-up, and this approach was therefore abandoned. The reflected beam projected images of the corneal cells onto a screen which could be mounted at a variable distance from the eye being examined in order to obtain the best image quality in the observation plane (Fig. 1). ...
... from the simplicity of the set-up, and this approach was therefore abandoned. The reflected beam projected images of the corneal cells onto a screen which could be mounted at a variable distance from the eye being examined in order to obtain the best image quality in the observation plane (Fig. 1). ...
development of fourier domain optical coherence
... Developmental biology is a field in which explorations are made to answer how an organism transforms from a single cell to a complex system made up of trillions of highly organized and highly specified cells. This field, however, is not just for discovery, it is crucial for unlocking factors that le ...
... Developmental biology is a field in which explorations are made to answer how an organism transforms from a single cell to a complex system made up of trillions of highly organized and highly specified cells. This field, however, is not just for discovery, it is crucial for unlocking factors that le ...
Total internal reflection holography for optical interconnections
... array has been used together with a liquid crystal light valve (LCLV) to form a reconfigurable interconnection system. The optical system is mounted on a glass substrate (planar optics) as shown in Fig. 5. The collimated light beam is coupled into the substrate with a prism. The substrate mode beam ...
... array has been used together with a liquid crystal light valve (LCLV) to form a reconfigurable interconnection system. The optical system is mounted on a glass substrate (planar optics) as shown in Fig. 5. The collimated light beam is coupled into the substrate with a prism. The substrate mode beam ...
TEM - UiO
... Many beams are allowed to pass through the objective aperture (as opposed to bright and dark field where only one beam pases at the time). To obtain lattice images, a large objective aperture has to be selected that allows many beams to pass including the direct beam. The image is formed by the inte ...
... Many beams are allowed to pass through the objective aperture (as opposed to bright and dark field where only one beam pases at the time). To obtain lattice images, a large objective aperture has to be selected that allows many beams to pass including the direct beam. The image is formed by the inte ...
The wide blue yonder
... (193nm) would seem to be out of the range of semiconductor laser systems for now, although some of the older microlithographies based on bulky, high-voltage, incoherent mercury lamps, such as i- and g-line (365nm and 436nm, respectively), are in range. An alternative in the short-wavelength sphere i ...
... (193nm) would seem to be out of the range of semiconductor laser systems for now, although some of the older microlithographies based on bulky, high-voltage, incoherent mercury lamps, such as i- and g-line (365nm and 436nm, respectively), are in range. An alternative in the short-wavelength sphere i ...
Chapter 25 - Heartland Community College
... • If the length is too great, the optical power level at the receiver will be insufficient to produce an acceptable signal-to-noise ratio • Given the optical power output of the transmitter and the signal level required by the receiver, a loss budget may be drawn up • If the losses along the line ar ...
... • If the length is too great, the optical power level at the receiver will be insufficient to produce an acceptable signal-to-noise ratio • Given the optical power output of the transmitter and the signal level required by the receiver, a loss budget may be drawn up • If the losses along the line ar ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.