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Variable Incidence Angle Fluorescence Interference Contrast
... diffraction limit (2). A few methods, most notably stimulated emission depletion microscopy (3), provide subhundred nanometer z-resolution by directly imaging a narrowed pointspread function. Although somewhat more limited in their applicability, surface-generated structured illumination techniques ...
... diffraction limit (2). A few methods, most notably stimulated emission depletion microscopy (3), provide subhundred nanometer z-resolution by directly imaging a narrowed pointspread function. Although somewhat more limited in their applicability, surface-generated structured illumination techniques ...
Optical interference component irradiances."
... As M2 moves towards M1’, d decreases ⇒ cos θm increases ⇒ θm decreases ⇒ Rings shrink towards center of screen in order to preserve the relation that 2dcosθm = mλ0. One order disappears when Δd= -λ0/2. Very precise changes in length are made by counting the number of fringes that disappear. Example: ...
... As M2 moves towards M1’, d decreases ⇒ cos θm increases ⇒ θm decreases ⇒ Rings shrink towards center of screen in order to preserve the relation that 2dcosθm = mλ0. One order disappears when Δd= -λ0/2. Very precise changes in length are made by counting the number of fringes that disappear. Example: ...
Pentacam: Principle and Clinical Applications
... with corneal epithelial problems, infections disorders and postoperative patients. Noncontact methods would be advantageous for corneal conditions associated with epithelial disorders, almost as a rule. The Pentacam obtains images of the anterior segment by a rotating Scheimpflug camera measurement ...
... with corneal epithelial problems, infections disorders and postoperative patients. Noncontact methods would be advantageous for corneal conditions associated with epithelial disorders, almost as a rule. The Pentacam obtains images of the anterior segment by a rotating Scheimpflug camera measurement ...
Pentacam: Principle and Clinical Applications
... with corneal epithelial problems, infections disorders and postoperative patients. Noncontact methods would be advantageous for corneal conditions associated with epithelial disorders, almost as a rule. The Pentacam obtains images of the anterior segment by a rotating Scheimpflug camera measurement ...
... with corneal epithelial problems, infections disorders and postoperative patients. Noncontact methods would be advantageous for corneal conditions associated with epithelial disorders, almost as a rule. The Pentacam obtains images of the anterior segment by a rotating Scheimpflug camera measurement ...
Semiperiodicity versus periodicity for ultra broadband optical
... are relatively strong, the resulting enhancement of the optical absorption is narrowband conforming to the narrow spectral range of the excited mode.8,9 On the other side, random grating structures are capable of exciting a broad range of weak modes, however, as these multiple modes are rather faint ...
... are relatively strong, the resulting enhancement of the optical absorption is narrowband conforming to the narrow spectral range of the excited mode.8,9 On the other side, random grating structures are capable of exciting a broad range of weak modes, however, as these multiple modes are rather faint ...
Characterization of a 90° waveguide bend using near-field scanning optical microscopy
... Waveguide bends are frequently used in photonic integrated circuits and optical sensors. Several theoretical models have been used to investigate modes in waveguide bends.1,2 Among them, the conformal index transformation method is regarded as a simple and effective method to solve for the mode prof ...
... Waveguide bends are frequently used in photonic integrated circuits and optical sensors. Several theoretical models have been used to investigate modes in waveguide bends.1,2 Among them, the conformal index transformation method is regarded as a simple and effective method to solve for the mode prof ...
Comment Document, September 2015 1 DRAFT CONSENSUS
... frontal plane until Purkinje images III and IV, as sighted by the examiner's eye, become aligned with one another. The apparent IOL tilt (θ') and decentration (Δ) are directly determined from this viewing situation. ...
... frontal plane until Purkinje images III and IV, as sighted by the examiner's eye, become aligned with one another. The apparent IOL tilt (θ') and decentration (Δ) are directly determined from this viewing situation. ...
Plasmonic metamaterials Review Kan Yao and Yongmin Liu*
... Engineering the dispersion of SPPs provides an alternative approach to realize negative refraction and NIMs. For instance, there are two bound-SPP modes in a twodimensional (2D) metal-dielectric-metal (MDM) slab waveguide, which originate from the coupling and hybridization of the SPP mode at each i ...
... Engineering the dispersion of SPPs provides an alternative approach to realize negative refraction and NIMs. For instance, there are two bound-SPP modes in a twodimensional (2D) metal-dielectric-metal (MDM) slab waveguide, which originate from the coupling and hybridization of the SPP mode at each i ...
Distortion free pulse delay system using a pair of
... Abstract: Recently, a tunable bandwidth white light cavity (WLC) was demonstrated by using an anomalously dispersive intra-cavity medium to adjust a cavity linewidth without reducing the cavity buildup factor [G.S. Pati et al., Phys. Rev. Lett. 99, 133601 (2007)]. In this paper, we show theoreticall ...
... Abstract: Recently, a tunable bandwidth white light cavity (WLC) was demonstrated by using an anomalously dispersive intra-cavity medium to adjust a cavity linewidth without reducing the cavity buildup factor [G.S. Pati et al., Phys. Rev. Lett. 99, 133601 (2007)]. In this paper, we show theoreticall ...
Fiber optic Fabry-Perot interferometer for
... Since the publication of the paper where the first fiber Fabry-Perot interferometer(FFPI) for sensing applications was demonstrated, more than thirty years ago, a number of configurations of this optical fiber interferometer have been proposed and used to detect physical, chemical and biological var ...
... Since the publication of the paper where the first fiber Fabry-Perot interferometer(FFPI) for sensing applications was demonstrated, more than thirty years ago, a number of configurations of this optical fiber interferometer have been proposed and used to detect physical, chemical and biological var ...
1 Fundamental Optics www.cvimellesgriot.com
... Ray f-numbers can also be defined for any arbitrary ray if its conjugate distance and the diameter at which it intersects the principal surface of the optical system are known. ...
... Ray f-numbers can also be defined for any arbitrary ray if its conjugate distance and the diameter at which it intersects the principal surface of the optical system are known. ...
Alternative Beam Splitter/Compensator Configurations for Reduction
... using the Michelson interferometer have been in development since the 1950s. 1 The fundamentals of these techniques were well documented in the 1970 Aspen International Conference on Fourier Spectroscopy.2 The conventional Fourier Transform Spectrometer (FTS) splits incoming electromagnetic radiatio ...
... using the Michelson interferometer have been in development since the 1950s. 1 The fundamentals of these techniques were well documented in the 1970 Aspen International Conference on Fourier Spectroscopy.2 The conventional Fourier Transform Spectrometer (FTS) splits incoming electromagnetic radiatio ...
Fabrication of submicrometer 3D structures by one
... (a) Cross section through the middle of the photonic crystal microcavity. A defect is formed in the 2D photonic crystal by removing a single hole, thus forming an energy well for photons similar to that for electrons in a quantum wire structure. Photons are also localized vertically by TIR at the ai ...
... (a) Cross section through the middle of the photonic crystal microcavity. A defect is formed in the 2D photonic crystal by removing a single hole, thus forming an energy well for photons similar to that for electrons in a quantum wire structure. Photons are also localized vertically by TIR at the ai ...
Direct welding of fused silica with femtosecond fiber laser
... component and affect its function. Optical contact bonding the most common bonding technique for glasses, which is a glueless process whereby two closely conformal surfaces are joined together, being held purely by intermolecular forces. But this adhesive-free process need ultra flat and ultra clean ...
... component and affect its function. Optical contact bonding the most common bonding technique for glasses, which is a glueless process whereby two closely conformal surfaces are joined together, being held purely by intermolecular forces. But this adhesive-free process need ultra flat and ultra clean ...
... because of the moving eye are much reduced with financial support from the British Optical Association and the contact lens systems. the Visual Research Trust. Quite often the amplitude and frequency of CN varies with positions of gaze, and in one direction, References the neutral zone, the nystagmu ...
Total internal reflection microscopy studies on colloidal particle
... “We must take care not to make intellect our God. It has, of course, powerful muscles, but has no personality. It cannot rule, only serve.” ...
... “We must take care not to make intellect our God. It has, of course, powerful muscles, but has no personality. It cannot rule, only serve.” ...
OM1 - Faculty of Engineering
... understand the meanings of the simple forms. With BST at A2, trace the beam until M2. Make sure M2 can capture the beam. Adjust M1 mounting post if necessary (do not accidentally knock down BST). Move BST to A5 (block the beam first). Using a plastic ruler, record the center-height h of the beam jus ...
... understand the meanings of the simple forms. With BST at A2, trace the beam until M2. Make sure M2 can capture the beam. Adjust M1 mounting post if necessary (do not accidentally knock down BST). Move BST to A5 (block the beam first). Using a plastic ruler, record the center-height h of the beam jus ...
- Labo America, Inc.
... aluminium foil). All other optical components to be cleaned should be as accessible as possible. Blow all loose dust particles away with compressed air of mini dust blower. Remove all water-soluble dirt with distilled water. If this is unsuccessful repeat using a solution of diluted hand soap liquid ...
... aluminium foil). All other optical components to be cleaned should be as accessible as possible. Blow all loose dust particles away with compressed air of mini dust blower. Remove all water-soluble dirt with distilled water. If this is unsuccessful repeat using a solution of diluted hand soap liquid ...
Atom interferometry with fermionic and bosonic isotopes of strontium
... interferometric schemes have to be employed. Because of this reason, in the second part of my Ph.D. fellowship, I started to develop a new scheme with the bosonic 88 Sr based on large-momentum-transfer Bragg pulses. Indeed, important goals are increase of the sensitivity of these devices as well as ...
... interferometric schemes have to be employed. Because of this reason, in the second part of my Ph.D. fellowship, I started to develop a new scheme with the bosonic 88 Sr based on large-momentum-transfer Bragg pulses. Indeed, important goals are increase of the sensitivity of these devices as well as ...
Option C – Imaging
... The eye contains a lens that helps to focus the light. Manufactured lenses made of transparent materials (such as glass or plastic) use the effect shown in Figure 15.3 to focus light and form images. This usually involves light travelling from an object through air and then through a transparent len ...
... The eye contains a lens that helps to focus the light. Manufactured lenses made of transparent materials (such as glass or plastic) use the effect shown in Figure 15.3 to focus light and form images. This usually involves light travelling from an object through air and then through a transparent len ...
Recent Advances in High-Birefringence Fiber Loop Mirror Sensors
... containing a section of highly birefringent fiber (Hi-Bi) has several advantages compared with a more traditional interferometer. One of them is the input polarization independence. Another one is the periodicity of the formed spectral filter, which depends only on the length of the Hi-Bi fiber and ...
... containing a section of highly birefringent fiber (Hi-Bi) has several advantages compared with a more traditional interferometer. One of them is the input polarization independence. Another one is the periodicity of the formed spectral filter, which depends only on the length of the Hi-Bi fiber and ...
Retinal hemorrhages as one of complications of optic disc drusen
... month of pregnancy visited an ophthalmologist because of a visual impairment described as the appearance of mist and shadows over her right eye. When first examined, her visual acuity in both eyes was 20/20. The retinal hemorrhages framing the bottom half of the optic nerve were seen. Complete labor ...
... month of pregnancy visited an ophthalmologist because of a visual impairment described as the appearance of mist and shadows over her right eye. When first examined, her visual acuity in both eyes was 20/20. The retinal hemorrhages framing the bottom half of the optic nerve were seen. Complete labor ...
Proteins in High Electric Fields - BYU ScholarsArchive
... Being able to control protein function directly and in real time is attractive. In this thesis, I discuss controlling protein activity using alternating current electric fields on the order of 1 MV/m. Since protein structures result in localized and/or protein-wide charge gradients, it is expected t ...
... Being able to control protein function directly and in real time is attractive. In this thesis, I discuss controlling protein activity using alternating current electric fields on the order of 1 MV/m. Since protein structures result in localized and/or protein-wide charge gradients, it is expected t ...
Ans: Optical Fiber Communication System
... transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are widely used in fiber-optic communications, where they permit transmission over longer distances and ...
... transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are widely used in fiber-optic communications, where they permit transmission over longer distances and ...
Kelley model of photographic process
... Diffraction–limited resolution (safe) Two point objects are “just resolvable just resolvable” (limited by diffraction only) if they are separated by: Two–dimensional systems (rotationally symmetric PSF) ...
... Diffraction–limited resolution (safe) Two point objects are “just resolvable just resolvable” (limited by diffraction only) if they are separated by: Two–dimensional systems (rotationally symmetric PSF) ...
Optical coherence tomography
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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.