MEMS Based Heavy Metal Detector Inas Raafat Ramsis
... hazards to humans’ health. As they are emitted into the water resources and adsorbed by soil, plants, fish and animals and eventually accumulate in human bodies causing a variety of serious diseases. Therefore, there is an urgent need to develop a continuous, rapid, automatic, and on-site heavy meta ...
... hazards to humans’ health. As they are emitted into the water resources and adsorbed by soil, plants, fish and animals and eventually accumulate in human bodies causing a variety of serious diseases. Therefore, there is an urgent need to develop a continuous, rapid, automatic, and on-site heavy meta ...
Coherent manipulation of the internal state of an atomic gas
... sense: they are characterized by a high propagation velocity, can be modulated up to high frequencies, and are relatively robust against decoherence. However it is not easy either to store them or to have some interaction among them. For these tasks, material media (atoms, ions, molecules, quantum-d ...
... sense: they are characterized by a high propagation velocity, can be modulated up to high frequencies, and are relatively robust against decoherence. However it is not easy either to store them or to have some interaction among them. For these tasks, material media (atoms, ions, molecules, quantum-d ...
References
... speckles, either deep Fresnel speckles that are produced by a thermal source characterized by a gaussian correlation function, or VCZ speckles produced by a thermal source illuminated by a focused gaussian beam. In this companion paper, we carry out a detailed experimental characterization of 3D lig ...
... speckles, either deep Fresnel speckles that are produced by a thermal source characterized by a gaussian correlation function, or VCZ speckles produced by a thermal source illuminated by a focused gaussian beam. In this companion paper, we carry out a detailed experimental characterization of 3D lig ...
Connection of scattering principles: a visual and
... numerical computations (Dorren et al., 1994), and it requires data recorded at locations usually not accessible due to practical limitations. Green’s function reconstruction (Wapenaar et al., 2005) is a technique that allows one to reconstruct the response between two receivers (represented by the t ...
... numerical computations (Dorren et al., 1994), and it requires data recorded at locations usually not accessible due to practical limitations. Green’s function reconstruction (Wapenaar et al., 2005) is a technique that allows one to reconstruct the response between two receivers (represented by the t ...
An Optical Mask for Atomic Interferometry Experiments
... implement a magneto-optical trap, and held atoms in the trap for around two minutes in 1987 [22] [23]. A magneto-optical trap uses a combination of a magnetic field and radiation pressure to contain atoms to a small region inside a vacuum chamber, a description is given later in this thesis. While C ...
... implement a magneto-optical trap, and held atoms in the trap for around two minutes in 1987 [22] [23]. A magneto-optical trap uses a combination of a magnetic field and radiation pressure to contain atoms to a small region inside a vacuum chamber, a description is given later in this thesis. While C ...
Construction of a femtosecond mode
... processing [2]. In the frequency domain, the broad spectral comb of equally spaced modes produced by a femtosecond mode-locked laser can be used as a ‘ruler’ to measure frequency intervals as well as it can be used as a “frequency bridge” to connect distant frequency domains [3,4]. So the ability to ...
... processing [2]. In the frequency domain, the broad spectral comb of equally spaced modes produced by a femtosecond mode-locked laser can be used as a ‘ruler’ to measure frequency intervals as well as it can be used as a “frequency bridge” to connect distant frequency domains [3,4]. So the ability to ...
Abstract
... Silicon waveguides are the first piece of the silicon photonics vision. The ability of silicon to guide light depends on many key properties of the material. The band gap of silicon determines the shortest possible wavelength of light able to propagate through the material without being absorbed. Th ...
... Silicon waveguides are the first piece of the silicon photonics vision. The ability of silicon to guide light depends on many key properties of the material. The band gap of silicon determines the shortest possible wavelength of light able to propagate through the material without being absorbed. Th ...
ChromatiC dispersion
... Dispersion in imaging In photographic and microscopic lenses, dispersion causes chromatic aberration, distorting the image, and various techniques have been developed to counteract it ...
... Dispersion in imaging In photographic and microscopic lenses, dispersion causes chromatic aberration, distorting the image, and various techniques have been developed to counteract it ...
Influence of Tj on chromaticity and CRI of trichromatic white
... half-maximum 共FWHM兲兴 of 5 – 8 kT. The linewidths are more than the theoretically expected linewidth of 1.8 kT, which originates in thermal broadening effects. Giving the linewidths in terms of units of kT is very useful as it allows for convenient comparison with the theoretical linewidth of 1.8 kT. ...
... half-maximum 共FWHM兲兴 of 5 – 8 kT. The linewidths are more than the theoretically expected linewidth of 1.8 kT, which originates in thermal broadening effects. Giving the linewidths in terms of units of kT is very useful as it allows for convenient comparison with the theoretical linewidth of 1.8 kT. ...
Laser Bandwidth Measurements in Fiber Data Delivery for Corning
... For premises networks that are built using laser-based transceivers, all application standards predict system performance using a variation of the Excel-based model developed by Hanson et. al. of Agilent Technologies, where attributes of different components are used to calculate a number of optical ...
... For premises networks that are built using laser-based transceivers, all application standards predict system performance using a variation of the Excel-based model developed by Hanson et. al. of Agilent Technologies, where attributes of different components are used to calculate a number of optical ...
light is - msmcgartland
... substance is one that does not transmit any light. • When light strikes an opaque object, the light is reflected or absorbed. • Rocks, wood, and metals ...
... substance is one that does not transmit any light. • When light strikes an opaque object, the light is reflected or absorbed. • Rocks, wood, and metals ...
Soliton Self-Frequency Shift Cancellation in
... the soliton is no longer “ideal,” but becomes a quasi-soliton coupled to dispersive waves (13). This effect gets more pronounced for shorter pulses and steeper GVD slopes. In what follows GVD will be denoted as 2(), defined as the second derivative of wavenumber k with respect to angular frequency ...
... the soliton is no longer “ideal,” but becomes a quasi-soliton coupled to dispersive waves (13). This effect gets more pronounced for shorter pulses and steeper GVD slopes. In what follows GVD will be denoted as 2(), defined as the second derivative of wavenumber k with respect to angular frequency ...
OPTICAL TWEEZERS: Characterization and Systems
... mathematics. This work investigates a modern tool of micro-manipulation of microscopic particles that is used primarily by bio-physicists and bio-chemists for single cell, single molecule studies. This tool called the Optical Tweezers can trap microscopic dielectric particles using radiation pressur ...
... mathematics. This work investigates a modern tool of micro-manipulation of microscopic particles that is used primarily by bio-physicists and bio-chemists for single cell, single molecule studies. This tool called the Optical Tweezers can trap microscopic dielectric particles using radiation pressur ...
Practical Aspects of Mirror Usage in Optical Systems for
... of pure S- or P-polarized incident light ...
... of pure S- or P-polarized incident light ...
Practical Aspects of Mirror Usage in Optical Systems for
... of pure S- or P-polarized incident light ...
... of pure S- or P-polarized incident light ...
Laser and its Medical Applications
... With very high power densities, instead of cooking, lasers will quickly heat the tissues to above 100o C , water within the tissues boils and evaporates. Since 70% of the body tissue is water, the boiling change the tissue into a gas. This phenomenon is called photo-vaporization. Photo- vaporization ...
... With very high power densities, instead of cooking, lasers will quickly heat the tissues to above 100o C , water within the tissues boils and evaporates. Since 70% of the body tissue is water, the boiling change the tissue into a gas. This phenomenon is called photo-vaporization. Photo- vaporization ...
Optical trapping and manipulation of neutral particles
... particle should be pushed out of the beam. This behavior was seen using micron-sized air bubbles in glycerol. One also observes, by mixing large and small diameter spheres in the same sample, that the large spheres move faster and pass right by the smaller spheres as they proceed along the beam. Thi ...
... particle should be pushed out of the beam. This behavior was seen using micron-sized air bubbles in glycerol. One also observes, by mixing large and small diameter spheres in the same sample, that the large spheres move faster and pass right by the smaller spheres as they proceed along the beam. Thi ...
Optical Waveguide Modes
... Since the waveguides in optical integrated circuits are typically only a few micrometers thick, observation of the optical mode profile across a given dimension cannot be accomplished without a relatively elaborate experimental set-up, featuring at least 1000× magnification. One such system [9], whi ...
... Since the waveguides in optical integrated circuits are typically only a few micrometers thick, observation of the optical mode profile across a given dimension cannot be accomplished without a relatively elaborate experimental set-up, featuring at least 1000× magnification. One such system [9], whi ...
Hyperbolic metamaterials and their applications Ferrari , , Dominic Lepage
... ultraviolet region, allowed by the free motion of electrons along parallel atomic layers, but its performance is limited by absorption losses [20]. Therefore, the available alternatives do not grant access to the visible range, and are too scarce to constitute a solid and versatile tool for applicat ...
... ultraviolet region, allowed by the free motion of electrons along parallel atomic layers, but its performance is limited by absorption losses [20]. Therefore, the available alternatives do not grant access to the visible range, and are too scarce to constitute a solid and versatile tool for applicat ...
Size Influence on the Propagation Loss Induced by Sidewall
... and the calculated propagation loss does not exis 4 m at ceed 0.50 dB/cm. Such a result is of prime interest for optical telecommunications since a 3-D tapered waveguide ended by a small strip section with low mode confinement can provide an efficient coupling with a single-mode optical fiber [8] wi ...
... and the calculated propagation loss does not exis 4 m at ceed 0.50 dB/cm. Such a result is of prime interest for optical telecommunications since a 3-D tapered waveguide ended by a small strip section with low mode confinement can provide an efficient coupling with a single-mode optical fiber [8] wi ...
Optical Time Domain Reflectometry (OTDR)
... naturally taking place in the core of optical fibers. As the light propagates down a fiber, small material imperfections scatter the incoming light in all directions at every point along the fiber. A small amount of this scattered light propagates back and can be detected at the same point at which ...
... naturally taking place in the core of optical fibers. As the light propagates down a fiber, small material imperfections scatter the incoming light in all directions at every point along the fiber. A small amount of this scattered light propagates back and can be detected at the same point at which ...
Optical Fourier techniques for medical image processing and phase
... and output power 10 mW is expanded to a spatially uniform beam. Light transmitted through the object is focused by the Fourier lens. At the Fourier plane, various spatial filters are used for blocking undesirable components. Through an inverse Fourier transformation, the filtered frequency components ...
... and output power 10 mW is expanded to a spatially uniform beam. Light transmitted through the object is focused by the Fourier lens. At the Fourier plane, various spatial filters are used for blocking undesirable components. Through an inverse Fourier transformation, the filtered frequency components ...
D1619
... Fiber optic communication system is also called light wave systems because they employ optical fibers to transmit information. In order to transmit signals over long distances, it is necessary to compensate the attenuation losses within the fiber. Initially, this was accomplished with an optoelectro ...
... Fiber optic communication system is also called light wave systems because they employ optical fibers to transmit information. In order to transmit signals over long distances, it is necessary to compensate the attenuation losses within the fiber. Initially, this was accomplished with an optoelectro ...
Study on Supervision of Wavelength Division Multiplexing
... The wavelength-division-multiplexed passive optical network (WDM-PON) offers many advantages such as large bandwidth per user, easy management, high network security and low insertion loss enabling long-reach and/or high split-ratio. However, with the rapid development and growing interest for deplo ...
... The wavelength-division-multiplexed passive optical network (WDM-PON) offers many advantages such as large bandwidth per user, easy management, high network security and low insertion loss enabling long-reach and/or high split-ratio. However, with the rapid development and growing interest for deplo ...
Development of Lightning Simulator
... of lightning, we adopted seven waveforms that contains two light waveforms and five current waveforms of lightning. Furthermore, the lightning simulator can calibrate the color of the simulated light output based on a correlated color temperature (CCT). The CCT of the simulated light can range over ...
... of lightning, we adopted seven waveforms that contains two light waveforms and five current waveforms of lightning. Furthermore, the lightning simulator can calibrate the color of the simulated light output based on a correlated color temperature (CCT). The CCT of the simulated light can range over ...
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.