II. Optical properties of glass
... incoming light waves of a range of the wavelengths. Often selective optical filters can be utilized to alter or enhance the brightness and contrast of digital images. Guided light wave transmission via frequency selective waveguides involves the emerging field of fiber optics and its ability of cert ...
... incoming light waves of a range of the wavelengths. Often selective optical filters can be utilized to alter or enhance the brightness and contrast of digital images. Guided light wave transmission via frequency selective waveguides involves the emerging field of fiber optics and its ability of cert ...
Measurement of Retinal Nerve Fiber Layer (RNFL) Thickness in
... damage of glaucoma (2) Recently, spectral domain OCT (SD-OCT) technology has been introduced providing faster scanning (up to 100) and finer axial resolution (up to 2) compared with TD-OCT.7 Faster scanning allows highresolution, three-dimensional (3-D) volume sampling by raster scanning in the regi ...
... damage of glaucoma (2) Recently, spectral domain OCT (SD-OCT) technology has been introduced providing faster scanning (up to 100) and finer axial resolution (up to 2) compared with TD-OCT.7 Faster scanning allows highresolution, three-dimensional (3-D) volume sampling by raster scanning in the regi ...
repeat
... For each of the molecules shown below, indicate on the diagram itself, in the space provided next to each group attached to the stereocentre, its priority, by writing the numbers 1, 2, 3, or 4 (1 being the highest and 4 the lowest priority). Then indicate whether the configuration of the stereocentr ...
... For each of the molecules shown below, indicate on the diagram itself, in the space provided next to each group attached to the stereocentre, its priority, by writing the numbers 1, 2, 3, or 4 (1 being the highest and 4 the lowest priority). Then indicate whether the configuration of the stereocentr ...
Document
... excited state to create a population inversion. Then, an input photon with a particular wavelength strikes an excited atom of the medium and pushes it back to a lower energy state to emit a photon with the same wavelength and in phase and in the same direction as the input photon. The process is cal ...
... excited state to create a population inversion. Then, an input photon with a particular wavelength strikes an excited atom of the medium and pushes it back to a lower energy state to emit a photon with the same wavelength and in phase and in the same direction as the input photon. The process is cal ...
Towards a lattice based neutral magnesium optical frequency
... Magnesium is an interesting candidate for a future high performance neutral atom optical frequency standard. It offers low sensitivity to frequency shifts of the 1 S0 to 3 P0 clock transition by room temperature blackbody radiation and several isotopes of suitable abundance (two bosonic, one fermion ...
... Magnesium is an interesting candidate for a future high performance neutral atom optical frequency standard. It offers low sensitivity to frequency shifts of the 1 S0 to 3 P0 clock transition by room temperature blackbody radiation and several isotopes of suitable abundance (two bosonic, one fermion ...
Signal-to-Signal-to-Noise-Ratio of Full-Field Fourier
... arm of a Michelson interferometer is scanned to obtain a one-dimensional reflectivity profile of the sample in depth, i.e. along the optical axis (A-scan) [3]. An alternative approach to obtain an A-scan is based on processing the spectral content of the heterodyne signal at the output of the statio ...
... arm of a Michelson interferometer is scanned to obtain a one-dimensional reflectivity profile of the sample in depth, i.e. along the optical axis (A-scan) [3]. An alternative approach to obtain an A-scan is based on processing the spectral content of the heterodyne signal at the output of the statio ...
The principles of statistical optics and image formation A Statistical
... The principles of statistical optics and image formation A Statistical Description of Optical Science Course Objective: This course aims to introduce the intrinsic nature of optical fields, their propagation, statistical properties (i.e., coherence), and imaging methods based on statistical properti ...
... The principles of statistical optics and image formation A Statistical Description of Optical Science Course Objective: This course aims to introduce the intrinsic nature of optical fields, their propagation, statistical properties (i.e., coherence), and imaging methods based on statistical properti ...
Slow light in room-temperature optical waveguides
... Most slow light techniques rely on resonant effects that cause large normal dispersion in a narrow spectral region (approximately equal to the resonance width), as shown in Fig. 1. Much of the early slow-light research was conducted with near an atomic resonance in a gas of atoms, where large change ...
... Most slow light techniques rely on resonant effects that cause large normal dispersion in a narrow spectral region (approximately equal to the resonance width), as shown in Fig. 1. Much of the early slow-light research was conducted with near an atomic resonance in a gas of atoms, where large change ...
Integrated Optics: Guiding and manipulating light for device
... means of external optical components. Integrated optics is the miniaturised version of bulk optical functional blocks where the light is confined and guided in optical waveguides and simultaneously manipulated to perform certain tasks. The light can be made to branch out from a single source in a tr ...
... means of external optical components. Integrated optics is the miniaturised version of bulk optical functional blocks where the light is confined and guided in optical waveguides and simultaneously manipulated to perform certain tasks. The light can be made to branch out from a single source in a tr ...
... AbstractID: 9348 Title: Dose sensitivity modification in polymer gel dosimeters improves the accuracy of optical CT scanning for gel dosimetry Optical CT scanning is a convenient, bench-top method of imaging 3D dose distributions in gel dosimeters such as BANG®. These scanners offer medical physicis ...
introduction - Institute for Data Analysis and Visualization
... responsible for increasing interest in accurate representation and modeling of volumetric retinal morphology. Over the past five years, our group has been actively developing custom volume visualization software that allows re-creation of anatomically correct retinal morphology [1]. A solid optical ...
... responsible for increasing interest in accurate representation and modeling of volumetric retinal morphology. Over the past five years, our group has been actively developing custom volume visualization software that allows re-creation of anatomically correct retinal morphology [1]. A solid optical ...
Correction of eye-motion artifacts in AO-OCT data sets
... Involuntary eye movement is one of the main problems inherent in the use of optical coherence tomography (OCT) to image the volumetric morphology of the human retina. Eye motion introduces motion artifacts that prevent measurement and complicate registration. This effect is magnified in high-resolut ...
... Involuntary eye movement is one of the main problems inherent in the use of optical coherence tomography (OCT) to image the volumetric morphology of the human retina. Eye motion introduces motion artifacts that prevent measurement and complicate registration. This effect is magnified in high-resolut ...
Cost-effective optical coherence tomography spectrometer based on
... efficient light collection makes it appealing for low cost high resolution spectrometry, and spectral imaging techniques like Spectral Domain Optical Coherence Tomography SD-OCT. OCT is a well-established technology to generate noninvasive cross-sectional depth resolved 2-dimensional and 3-dimension ...
... efficient light collection makes it appealing for low cost high resolution spectrometry, and spectral imaging techniques like Spectral Domain Optical Coherence Tomography SD-OCT. OCT is a well-established technology to generate noninvasive cross-sectional depth resolved 2-dimensional and 3-dimension ...
PDF
... halmoscopic level even though clinical signs are expressed. In these cases, OCT is of great help for revealing subtle changes where conventional techniques such as ophthalmoscopy and FA do no assist in defining in vivo damages. OCT shows a hyper-reflective area which generally affects all the foveal ...
... halmoscopic level even though clinical signs are expressed. In these cases, OCT is of great help for revealing subtle changes where conventional techniques such as ophthalmoscopy and FA do no assist in defining in vivo damages. OCT shows a hyper-reflective area which generally affects all the foveal ...
Aref OCT 2011 - EYE-PIX
... Patients presenting to the Penn State Hershey Eye Center retina service for complete retinal evaluation including OCT imaging were identified prospectively. All participants gave written informed consent for participation in the study. For each study participant, an initial OCT series was obtained o ...
... Patients presenting to the Penn State Hershey Eye Center retina service for complete retinal evaluation including OCT imaging were identified prospectively. All participants gave written informed consent for participation in the study. For each study participant, an initial OCT series was obtained o ...
Jannick Rolland, PhD
... CenterFreeformOptics.org), the R.E. Hopkins Center (www.hopkinscenter.rochester.edu), and the ODALab (www.odalabspectrum.org). She graduated from the optical engineering school of the Institut d'Optique Théorique et Appliquée, France, and earned a PhD from the College of Optical Sciences at the Univ ...
... CenterFreeformOptics.org), the R.E. Hopkins Center (www.hopkinscenter.rochester.edu), and the ODALab (www.odalabspectrum.org). She graduated from the optical engineering school of the Institut d'Optique Théorique et Appliquée, France, and earned a PhD from the College of Optical Sciences at the Univ ...
Prof. Lan Yang - Microlasers for Nanoscale
... Optical sensors based on Whispering-Gallery-Mode (WGM) resonators have emerged as front-runners for label-free, ultra-sensitive detection of nanoscale materials and structures due to their superior capability to significantly enhance the interactions of light with the sensing targets. A WGM resonato ...
... Optical sensors based on Whispering-Gallery-Mode (WGM) resonators have emerged as front-runners for label-free, ultra-sensitive detection of nanoscale materials and structures due to their superior capability to significantly enhance the interactions of light with the sensing targets. A WGM resonato ...
Final Exam
... 4) An electromagnetic plane wave is incident on an opaque screen that contains a single and long horizontal slit that is 20 cm wide in the vertical direction. As shown in the Figure below, a detector, far away from the screen, but moving parallel to it, locates the first minimum of light intensity a ...
... 4) An electromagnetic plane wave is incident on an opaque screen that contains a single and long horizontal slit that is 20 cm wide in the vertical direction. As shown in the Figure below, a detector, far away from the screen, but moving parallel to it, locates the first minimum of light intensity a ...
Fundus Autofluorescence Imaging with the Confocal Scanning
... Three different cSLO systems have so far been used for obtaining FAF images: Heidelberg Retina Angiograph [HRA classic, HRA 2 (Fig. 3.1) and Spectralis HRA, Heidelberg Engineering, Heidelberg, Germany (Fig. 3.2)]; Rodenstock cSLO (RcSLO; Rodenstock, Weco, Düsseldorf, Germany), and Zeiss prototype SM ...
... Three different cSLO systems have so far been used for obtaining FAF images: Heidelberg Retina Angiograph [HRA classic, HRA 2 (Fig. 3.1) and Spectralis HRA, Heidelberg Engineering, Heidelberg, Germany (Fig. 3.2)]; Rodenstock cSLO (RcSLO; Rodenstock, Weco, Düsseldorf, Germany), and Zeiss prototype SM ...
Nano-optical Imaging using Scattering Scanning Near-Field Optical Microscopy
... the electronic, spin, and lattice excitations in matter. Even the real-time dynamics of elementary interactions can be studied when using ultrafast laser techniques. The problem with optical spectroscopy has always been the diffraction limit which restricts the achievable spatial resolution by the w ...
... the electronic, spin, and lattice excitations in matter. Even the real-time dynamics of elementary interactions can be studied when using ultrafast laser techniques. The problem with optical spectroscopy has always been the diffraction limit which restricts the achievable spatial resolution by the w ...
Basics in Confocal Microscopy Handouts
... In Total Internal Reflection (TIRF) microscopy light is coupled into the optics above a critical angle which reflects the light totally but creates an evanescent wave about 50-200 nm next to the reflecting surface (cover slip). ...
... In Total Internal Reflection (TIRF) microscopy light is coupled into the optics above a critical angle which reflects the light totally but creates an evanescent wave about 50-200 nm next to the reflecting surface (cover slip). ...
Optimal wavelength for ultrahigh-resolution optical
... 16 June 2003 / Vol. 11, No. 12 / OPTICS EXPRESS 1411 ...
... 16 June 2003 / Vol. 11, No. 12 / OPTICS EXPRESS 1411 ...
A1982PU06800001
... solution to be the only one possible. Chase’s discussion was the most com3 plete and the one published. “The problem was caused by an extra term in the solution arising from a possible statistical correlation between the coherence function and the local variation in the air’s index of refraction. So ...
... solution to be the only one possible. Chase’s discussion was the most com3 plete and the one published. “The problem was caused by an extra term in the solution arising from a possible statistical correlation between the coherence function and the local variation in the air’s index of refraction. So ...
Optical Coherence Tomography of the Anterior Eye Segment
... procedures, and to image intracorneal ring segments. It is also being studied in relation to pathologic processes such as dry eye syndrome, tumors, uveitis, and infections. Summary of Evidence Ideally, a diagnostic test would be evaluated based on its technical performance, diagnostic accuracy (sens ...
... procedures, and to image intracorneal ring segments. It is also being studied in relation to pathologic processes such as dry eye syndrome, tumors, uveitis, and infections. Summary of Evidence Ideally, a diagnostic test would be evaluated based on its technical performance, diagnostic accuracy (sens ...
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.