Imaging visible light using anisotropic metamaterial slab lens Jie Yao, Kun-Tong Tsai,
... permittivity (ε) and permeability (µ) [1], and a non-magnetic approach which implements the strong anisotropy of the materials [2–5]. The former approach has so far gained great success in a broad range of electromagnetic wave frequencies from microwave (GHz) range to infrared region [6–11]. However ...
... permittivity (ε) and permeability (µ) [1], and a non-magnetic approach which implements the strong anisotropy of the materials [2–5]. The former approach has so far gained great success in a broad range of electromagnetic wave frequencies from microwave (GHz) range to infrared region [6–11]. However ...
Fiber Optic Light Sources - Electrical and Computer
... Active Regions are usually 100-150µm long and the strips are 50-70µm wide which are designed to match typical core fibers of 50-100µm. Emit light at narrower angle which allows for better coupling and efficiency than SLEDs ...
... Active Regions are usually 100-150µm long and the strips are 50-70µm wide which are designed to match typical core fibers of 50-100µm. Emit light at narrower angle which allows for better coupling and efficiency than SLEDs ...
Section 1 Supplement
... An object is anything that is being viewed, e.g., when one looks at a tree through a lens, with a mirror or any other optical device the tree is referred to an optical object. Object Distance, s, is the distance from an object to an optical element. An image is the likeness of an object produced at ...
... An object is anything that is being viewed, e.g., when one looks at a tree through a lens, with a mirror or any other optical device the tree is referred to an optical object. Object Distance, s, is the distance from an object to an optical element. An image is the likeness of an object produced at ...
Tomographic Interference Microscopy of Living Cells
... Research on the internal structure of living cells gives important information about morphology, spatial distribution of proteins and concentration of chemical drugs inside the cell. In microscopy three types of samples are usually investigated: fluorescent or emissive samples; stained or amplitude ...
... Research on the internal structure of living cells gives important information about morphology, spatial distribution of proteins and concentration of chemical drugs inside the cell. In microscopy three types of samples are usually investigated: fluorescent or emissive samples; stained or amplitude ...
doc - The Crowned Anarchist Literature
... refractive indices of substances are also measured with the interferometer, the refractive index being calculated from the shift in interference fringes caused by the retardation of the beam. The principle of the interferometer is also used to measure the diameter of large stars, such as Betelgeuse. ...
... refractive indices of substances are also measured with the interferometer, the refractive index being calculated from the shift in interference fringes caused by the retardation of the beam. The principle of the interferometer is also used to measure the diameter of large stars, such as Betelgeuse. ...
Document
... a periodic change in the index of the refraction in the waveguide. • Each period of the grating reflects a small amount of light back in the opposite direction. • The Bragg grating has a high reflectivity at the wavelength where the grating period is one-half of the wavelength of light in the semico ...
... a periodic change in the index of the refraction in the waveguide. • Each period of the grating reflects a small amount of light back in the opposite direction. • The Bragg grating has a high reflectivity at the wavelength where the grating period is one-half of the wavelength of light in the semico ...
Slide 1
... • Post exposure bake also helps by smoothing out the zigzag due to resist thermal reflow. • (Also due to reflection, a metal layer on the surface will require a shorter exposure ...
... • Post exposure bake also helps by smoothing out the zigzag due to resist thermal reflow. • (Also due to reflection, a metal layer on the surface will require a shorter exposure ...
1051-733-20092 Homework #1 Due 12/09/2000 (W)
... 7. Consider a spherical wave expanding about the point [0, 0, −z1 ] in a Cartesian coordinate system. The wavelength of the light is λ0 and z1 > 0. (a) Express the phase distribution of the spherical wave across the [x, y] plane located normal to the z-axis at coordinate z = 0. (b) Use the paraxial ...
... 7. Consider a spherical wave expanding about the point [0, 0, −z1 ] in a Cartesian coordinate system. The wavelength of the light is λ0 and z1 > 0. (a) Express the phase distribution of the spherical wave across the [x, y] plane located normal to the z-axis at coordinate z = 0. (b) Use the paraxial ...
The Michelson Interferometer
... The Michelson interferometer is the best known example of a class of interferometers that are known as amplitude-splitting interferometers, that is they produce interference by means of division of the amplitude of incident light by means of arrangements of mirrors and beamsplitters. Michelson devel ...
... The Michelson interferometer is the best known example of a class of interferometers that are known as amplitude-splitting interferometers, that is they produce interference by means of division of the amplitude of incident light by means of arrangements of mirrors and beamsplitters. Michelson devel ...
supplementary info
... from the bottom side with light polarization along the y-direction. (I). A single Ag nanoparticle in water as a basis for comparison. (II). A Au plate is used to reflect the beam, and the Ag nanoparticle is located at the first interference fringe (antinode). (III). A second Ag nanoparticle is added ...
... from the bottom side with light polarization along the y-direction. (I). A single Ag nanoparticle in water as a basis for comparison. (II). A Au plate is used to reflect the beam, and the Ag nanoparticle is located at the first interference fringe (antinode). (III). A second Ag nanoparticle is added ...
Optical Computers (Erin Raphael, 2006)
... form of a hologram within a crystal. A laser is split into a reference beam and a signal beam. Signal beam goes through the logic gate and receives information The two beams then meet up again and interference pattern creates a hologram in the crystal. ...
... form of a hologram within a crystal. A laser is split into a reference beam and a signal beam. Signal beam goes through the logic gate and receives information The two beams then meet up again and interference pattern creates a hologram in the crystal. ...
Optical Coherence Tomography in Pediatric Ophthalmology: Current
... first OCT system to be widely adopted by ophthalmologists, provides images with relatively high axial resolution (~10 μm in tissue). However, the major limitation of Stratus OCT is its need for a moving reference mirror and thus a relatively slow image acquisition speed (400 A-scans per second). In S ...
... first OCT system to be widely adopted by ophthalmologists, provides images with relatively high axial resolution (~10 μm in tissue). However, the major limitation of Stratus OCT is its need for a moving reference mirror and thus a relatively slow image acquisition speed (400 A-scans per second). In S ...
LIGHT APLIFICATION by STIMULATED EMISSION of RADITIONS
... obtained, emitted photons have same frequency and phase. They travel in same direction. Thus the number of photons goes on multiplying by stimulated emission. Hence we get a highly intense, monochromatic, coherence and unidirectional beam. ...
... obtained, emitted photons have same frequency and phase. They travel in same direction. Thus the number of photons goes on multiplying by stimulated emission. Hence we get a highly intense, monochromatic, coherence and unidirectional beam. ...
Birla Institute of Technology and Science, Pilani and Elite School of Optometry
... Course Objective: The objectives of this course are to describe the wave nature of light and apply the wave theory to explain classic phenomena such as interference, diffraction and polarization. Working of some optical instruments and a brief description of scattering and laser will also be include ...
... Course Objective: The objectives of this course are to describe the wave nature of light and apply the wave theory to explain classic phenomena such as interference, diffraction and polarization. Working of some optical instruments and a brief description of scattering and laser will also be include ...
Reports of optical fiber communication systems 2011-2012
... The advantage of this method is that it is simple. Secondly, if low dispersion fiber is used together with a (linearized) external modulator, the system becomes linear. Consequently, the optical link acts only as an amplifier or attenuator and is therefore transparent to the modulation format of the ...
... The advantage of this method is that it is simple. Secondly, if low dispersion fiber is used together with a (linearized) external modulator, the system becomes linear. Consequently, the optical link acts only as an amplifier or attenuator and is therefore transparent to the modulation format of the ...
Two laser wavelength Thomson Scattering for high electron
... relativistic blue shift of the spectrum are the causes of inadmissible error bars. Due to background radiation (line emission and Bremsstrahlung) it is not advisable to extend the interference filters of the polychromators to much shorter wavelength. As an alternative method an additional Nd:YAG las ...
... relativistic blue shift of the spectrum are the causes of inadmissible error bars. Due to background radiation (line emission and Bremsstrahlung) it is not advisable to extend the interference filters of the polychromators to much shorter wavelength. As an alternative method an additional Nd:YAG las ...
Stability characterization of an optical injection phase locked loop for
... the phase detector was 4.5 dBm. When the IR was -39 dB, the phase noise reached -122 dBc/Hz at 1 MHz offset. As compared to previously-published results, our phase noise at 1 kHz and 1 MHz were 22 dB and 10 dB lower than that reported by [6], although we used about 10 dB lower IR (-50 dB). We believ ...
... the phase detector was 4.5 dBm. When the IR was -39 dB, the phase noise reached -122 dBc/Hz at 1 MHz offset. As compared to previously-published results, our phase noise at 1 kHz and 1 MHz were 22 dB and 10 dB lower than that reported by [6], although we used about 10 dB lower IR (-50 dB). We believ ...
Clinical Advantages of Swept-Source OCT and New Non
... With a basic understanding of the technical differences between conventional and SS-OCT we can now explore the advantages of this new technology. ...
... With a basic understanding of the technical differences between conventional and SS-OCT we can now explore the advantages of this new technology. ...
Anterior Chamber Width Measurement by High
... Objective: To measure anterior chamber (AC) width and other dimensions relevant to the sizing of phakic intraocular lenses (IOLs) with a high-speed optical coherence tomography (OCT) system. Design: Cross-sectional observational study. Participants: Both eyes of 20 normal volunteers. Methods: A nove ...
... Objective: To measure anterior chamber (AC) width and other dimensions relevant to the sizing of phakic intraocular lenses (IOLs) with a high-speed optical coherence tomography (OCT) system. Design: Cross-sectional observational study. Participants: Both eyes of 20 normal volunteers. Methods: A nove ...
Optical coherence tomography angiography of the optic nerve head
... developed for the in vivo measurement of ocular blood flow. Dynamic angiography using intravenous injection of a fluorescent dye has been the mainstay for the evaluation of the normal optic nerve head vasculature and for the in vivo diagnosis and management of the optic neuropathies for several deca ...
... developed for the in vivo measurement of ocular blood flow. Dynamic angiography using intravenous injection of a fluorescent dye has been the mainstay for the evaluation of the normal optic nerve head vasculature and for the in vivo diagnosis and management of the optic neuropathies for several deca ...
The use of optical coherence tomography in neuro
... In recent years, optical coherence tomography has become an indispensable tool for ophthalmologists. In neuro-ophthalmology, this form of tomography is particularly useful for the structural documentation of peripapillary retinal nerve fiber layer thickness and optic nerve head morphology. The spect ...
... In recent years, optical coherence tomography has become an indispensable tool for ophthalmologists. In neuro-ophthalmology, this form of tomography is particularly useful for the structural documentation of peripapillary retinal nerve fiber layer thickness and optic nerve head morphology. The spect ...
Optical Coherence Tomography for Ophthalmologic
... are not limited to, the OCT3, Stratus OCTTM and CirrusTM HD-OCT. These devices are intended for use as a diagnostic device to aid in the detection and management of ocular diseases, including but not limited to macular edema, central serous retinopathy, diabetic retinopathy age-related macular degen ...
... are not limited to, the OCT3, Stratus OCTTM and CirrusTM HD-OCT. These devices are intended for use as a diagnostic device to aid in the detection and management of ocular diseases, including but not limited to macular edema, central serous retinopathy, diabetic retinopathy age-related macular degen ...
Ch14 Review
... Describe the nature of images formed by flat mirrors. Calculate distances and focal lengths using the mirror equation for concave and convex spherical mirrors. Draw ray diagrams to find the image distance and magnification for concave and convex spherical mirrors. Distinguish between real an ...
... Describe the nature of images formed by flat mirrors. Calculate distances and focal lengths using the mirror equation for concave and convex spherical mirrors. Draw ray diagrams to find the image distance and magnification for concave and convex spherical mirrors. Distinguish between real an ...
Quantum mechanical properties of Bessel modes and their effect on
... • Bessel EM modes are studied within the general framework of quantum optics. The basic dynamical operators are identified and their algebraic properties are studied. • As a mean to measure these dynamical properties, the transition probability for the emission of a Bessel photon by an atomic system ...
... • Bessel EM modes are studied within the general framework of quantum optics. The basic dynamical operators are identified and their algebraic properties are studied. • As a mean to measure these dynamical properties, the transition probability for the emission of a Bessel photon by an atomic system ...
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.