Quantum Gas Microscope With Optical Lattice
... interaction energy, thus reaching the regime of strongly interacting. It was not long, before the community started to recognise the advantages of the optical lattice system over the traditional model system for studying condensed matter that of real solids. In essence, atoms tunneling in the optica ...
... interaction energy, thus reaching the regime of strongly interacting. It was not long, before the community started to recognise the advantages of the optical lattice system over the traditional model system for studying condensed matter that of real solids. In essence, atoms tunneling in the optica ...
Optical properties of the mouse eye
... Knowledge of the optical aberrations of the mouse eye is important not only for understanding the visual capabilities of the mouse, but also because correcting these aberrations can improve the quality of in vivo images of the mouse retina. In vivo imaging offers the advantage over post mortem hist ...
... Knowledge of the optical aberrations of the mouse eye is important not only for understanding the visual capabilities of the mouse, but also because correcting these aberrations can improve the quality of in vivo images of the mouse retina. In vivo imaging offers the advantage over post mortem hist ...
Wavefront Aberrations and Peripheral Vision
... the peripheral vision and, in spite of low visual acuity, they can still move around freely and to a limited extent read and watch television. This eccentric viewing means actively using a peripheral location on the retina, ideally the best remaining part, which is then called the preferred retinal ...
... the peripheral vision and, in spite of low visual acuity, they can still move around freely and to a limited extent read and watch television. This eccentric viewing means actively using a peripheral location on the retina, ideally the best remaining part, which is then called the preferred retinal ...
Central Corneal Thickness
... additional concerns with a direct contact technique.21 A new instrument, the corneal confocal microscope, enables scanning of the different layers of the central cornea with magnification up to 31000 and analyzing individual corneal layers. This instrument allows central corneal analysis without dir ...
... additional concerns with a direct contact technique.21 A new instrument, the corneal confocal microscope, enables scanning of the different layers of the central cornea with magnification up to 31000 and analyzing individual corneal layers. This instrument allows central corneal analysis without dir ...
Quasi Phase Matching Devices for Optical
... QPM is a very special technique where the real phase matching never occurs, due to high conversion efficiencies which are nevertheless obtained in a crystal in which there is varying sign of non-linearity periodically. Such a variation technique of nonlinearity can be achieved by periodic polling. 1 ...
... QPM is a very special technique where the real phase matching never occurs, due to high conversion efficiencies which are nevertheless obtained in a crystal in which there is varying sign of non-linearity periodically. Such a variation technique of nonlinearity can be achieved by periodic polling. 1 ...
Ultrafast Optical Parametric Chirped
... where the phase matching is optimized, which leads to a threepeak spectrum for this particular OPCPA system. The ability to tune both θ and α provides a high degree of control over both central wavelength and width of the gain spectrum. For this particular phase-matching geometry, the gain spectrum ...
... where the phase matching is optimized, which leads to a threepeak spectrum for this particular OPCPA system. The ability to tune both θ and α provides a high degree of control over both central wavelength and width of the gain spectrum. For this particular phase-matching geometry, the gain spectrum ...
Fibre-Loop Ring-Down Spectroscopy Using Liquid Core Waveguides
... of the light intensity in the cavity is measured, thereby rendering the techniques insensitive to light intensity fluctuations. Optical waveguides are used to build the optical cavities presented in this work. The geometries of such waveguides permit the use of very small liquid sample volumes while ...
... of the light intensity in the cavity is measured, thereby rendering the techniques insensitive to light intensity fluctuations. Optical waveguides are used to build the optical cavities presented in this work. The geometries of such waveguides permit the use of very small liquid sample volumes while ...
QUANTITIES, TERMINOLOGY, AND SYMBOLS IN
... in the bright region. As a result, spatially modulated refractive index and absorbance patterns are created (optical grating). Such a grating diffracts another probe light beam into a phase-matching direction. The intensity of the diffracted light (TG signal) is related to the amplitude of the peak- ...
... in the bright region. As a result, spatially modulated refractive index and absorbance patterns are created (optical grating). Such a grating diffracts another probe light beam into a phase-matching direction. The intensity of the diffracted light (TG signal) is related to the amplitude of the peak- ...
Processing of Graphene combining Optical Detection and Scanning
... within a single-pixel that corresponds either to the background, single- or bi-layer graphene, respectively. While the distribution of the B channel values is comparable for all cases, the results for the R and G values are illustrated in Figure 3. Here, it can be clearly seen that the R and G value ...
... within a single-pixel that corresponds either to the background, single- or bi-layer graphene, respectively. While the distribution of the B channel values is comparable for all cases, the results for the R and G values are illustrated in Figure 3. Here, it can be clearly seen that the R and G value ...
5 Optical Fibers
... For any material, the zero group dispersion is the wavelength at which the curve of the refractive index has an inflection point. For silica this wavelength is at 1300 nm, and it is known as l0. From Figure 5.9 one can distinguish two regions associated with the group index curve. The first region i ...
... For any material, the zero group dispersion is the wavelength at which the curve of the refractive index has an inflection point. For silica this wavelength is at 1300 nm, and it is known as l0. From Figure 5.9 one can distinguish two regions associated with the group index curve. The first region i ...
development and verification of the non
... Aberrations . . . . . . . . . . . . . . . . Optical beam parameters . . . . . . . . ...
... Aberrations . . . . . . . . . . . . . . . . Optical beam parameters . . . . . . . . ...
Design of Refractive Index Profile for Multimode Optical Fibers with
... Differential mode delay (DMD) is the main factor of pulse distortion for laser-based multi-Gigabit data transmission over conventional silica multimode gradedindex fibers of both OM1/OM2 and modern OM3/OM4 categories [1]. It is an effect caused by narrow laser beam injection into the center region o ...
... Differential mode delay (DMD) is the main factor of pulse distortion for laser-based multi-Gigabit data transmission over conventional silica multimode gradedindex fibers of both OM1/OM2 and modern OM3/OM4 categories [1]. It is an effect caused by narrow laser beam injection into the center region o ...
الشريحة 1
... Francesco Maria Grimaldi coined the word "diffraction" and was the first to record accurate observations of the phenomenon in 1665.[2][3] In classical physics, the diffraction phenomenon is described as the apparent bending of waves around small obstacles and the spreading out of waves past small op ...
... Francesco Maria Grimaldi coined the word "diffraction" and was the first to record accurate observations of the phenomenon in 1665.[2][3] In classical physics, the diffraction phenomenon is described as the apparent bending of waves around small obstacles and the spreading out of waves past small op ...
Polarization of Light: from Basics to Instruments
... Polaroid-type polarimeter for circular polarimetry • Polaroids are not sensitive to circular polarization, so convert circular polarization to linear first, by using a quarter-wave plate • Polarimeter now uses a quarter-wave plate and a polaroid • Same disadvantages as before ...
... Polaroid-type polarimeter for circular polarimetry • Polaroids are not sensitive to circular polarization, so convert circular polarization to linear first, by using a quarter-wave plate • Polarimeter now uses a quarter-wave plate and a polaroid • Same disadvantages as before ...
OTDR DISTRIBUTED SENSING OF LIQUID HYDROCARBONS
... coating, the light guiding properties of the fiber and the backscatter signal can be affected by optical effects induced in this cladding due to a penetrating chemical. Thus, it is possible to detect the presence and spatial distribution of analyte molecules along the active length of the fiber. Su ...
... coating, the light guiding properties of the fiber and the backscatter signal can be affected by optical effects induced in this cladding due to a penetrating chemical. Thus, it is possible to detect the presence and spatial distribution of analyte molecules along the active length of the fiber. Su ...
Recent progress in investigating optical rogue waves
... The science of rogue waves in optics is now over five years old, and it has emerged as an area of broad interest to researchers across the physical sciences [1]. This area of study was initiated by the pioneering measurement of Solli et al [2] when analysing supercontinuum generation in optical fibr ...
... The science of rogue waves in optics is now over five years old, and it has emerged as an area of broad interest to researchers across the physical sciences [1]. This area of study was initiated by the pioneering measurement of Solli et al [2] when analysing supercontinuum generation in optical fibr ...
Aalborg Universitet theoretical analysis of finite-height semiconductor-on-insulator based planar photonic
... wave vectors that are on the boundary of the irreducible Brillouin zone, shown as an inset in Fig. 5. The shaded region is the light cone for the silica material above and below the finiteheight photonic crystal slab. All combinations of wave vector and frequency in the shaded region are allowed in ...
... wave vectors that are on the boundary of the irreducible Brillouin zone, shown as an inset in Fig. 5. The shaded region is the light cone for the silica material above and below the finiteheight photonic crystal slab. All combinations of wave vector and frequency in the shaded region are allowed in ...
15. Atmospheric Channel Effects and the Impact on
... model, which is in good accordance with measured data given in [16, 17]. It reveals the relatively mild wind at HAP altitudes between 17 and 22 km, leading to reduced turbulence, i.e. a small structure parameter (cf. Fig. 15.3 (b)). When calculating temporal statistics (like the number of fades per ...
... model, which is in good accordance with measured data given in [16, 17]. It reveals the relatively mild wind at HAP altitudes between 17 and 22 km, leading to reduced turbulence, i.e. a small structure parameter (cf. Fig. 15.3 (b)). When calculating temporal statistics (like the number of fades per ...
Construction of a 408 nm Laser System for Use in Ion Interferometry
... strontium release atoms into the vacuum chamber where some of them are cooled and trapped by the MOT beams. One of the mirrors used on the MOT beams has a hole in it, which allows some of the ions to escape. The MOT with a hole in it comprises the Low Velocity Intense Source (LVIS). Neutral atoms th ...
... strontium release atoms into the vacuum chamber where some of them are cooled and trapped by the MOT beams. One of the mirrors used on the MOT beams has a hole in it, which allows some of the ions to escape. The MOT with a hole in it comprises the Low Velocity Intense Source (LVIS). Neutral atoms th ...
laser-based fibre-optic sensor for measurement of surface properties
... the music industry In the field o f surface roughness measurement, numerous optical methods have been used in the place o f the mechanical stylus Surface roughness can be measured through the effect o f light scattering from rough surfaces In the transition from a smooth surface, which transmits lig ...
... the music industry In the field o f surface roughness measurement, numerous optical methods have been used in the place o f the mechanical stylus Surface roughness can be measured through the effect o f light scattering from rough surfaces In the transition from a smooth surface, which transmits lig ...
engineering of complex optical fields and its
... Generation of optical fields with complex spatial distribution in the cross section is of great interest in application areas where exotic optical fields are desired, including particle manipulation, optical nanofabrication, beam shaping and optical imaging. The dissertation is organized in two part ...
... Generation of optical fields with complex spatial distribution in the cross section is of great interest in application areas where exotic optical fields are desired, including particle manipulation, optical nanofabrication, beam shaping and optical imaging. The dissertation is organized in two part ...
View PDF - CiteSeerX
... in a disordered optical medium. The challenge can be e.g. the angle of incidence, focal distance or wavelength of the laser beam, a mask pattern blocking part of the laser light, or any other change in the wave front. The response is the speckle pattern. An input-output pair is usually called a Chal ...
... in a disordered optical medium. The challenge can be e.g. the angle of incidence, focal distance or wavelength of the laser beam, a mask pattern blocking part of the laser light, or any other change in the wave front. The response is the speckle pattern. An input-output pair is usually called a Chal ...
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. ...
Optical Methods for Tympanic Membrane Characterisation Towards Objective Otoscopy in Otitis Media
... membranes (TM) of the patient, usually be means of otoscopy. The general aim of this thesis was to develop optical methods that enable quantification of TM characteristics associated with otitis media. Diffuse reflectance spectroscopy was applied to quantify TM erythema using previously suggested er ...
... membranes (TM) of the patient, usually be means of otoscopy. The general aim of this thesis was to develop optical methods that enable quantification of TM characteristics associated with otitis media. Diffuse reflectance spectroscopy was applied to quantify TM erythema using previously suggested er ...
OKO guide to adaptive optics
... The majority of adaptive optical systems are based on the traditional phase-conjugate scheme [1]. Its operation can be explained using a simplified example from astronomy. A light wave coming from a distant star forms an image of this star in a telescope. Passing through the atmosphere, the light wa ...
... The majority of adaptive optical systems are based on the traditional phase-conjugate scheme [1]. Its operation can be explained using a simplified example from astronomy. A light wave coming from a distant star forms an image of this star in a telescope. Passing through the atmosphere, the light wa ...
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.