Wave aberration of human eyes and new descriptors
... lens surfaces allow the eye to accommodate, the process by which the eye focuses on near objects. Overall, these changes contribute an extra 10.0 to 15.0 diopters (D) of refraction in the young adult eye and diminish with aging. The optical elements described here work in concert to create an image ...
... lens surfaces allow the eye to accommodate, the process by which the eye focuses on near objects. Overall, these changes contribute an extra 10.0 to 15.0 diopters (D) of refraction in the young adult eye and diminish with aging. The optical elements described here work in concert to create an image ...
Development and Characterization of a 300mm Dual
... the emitted spectrum is not used, and this energy is lost as heat, which must be managed. Alternatively, light emitting diodes (LEDs) are compact, long-lived, and highly efficient, but in contrast, they have limited brightness and less uniform output. Successful implementation of LEDs for this appli ...
... the emitted spectrum is not used, and this energy is lost as heat, which must be managed. Alternatively, light emitting diodes (LEDs) are compact, long-lived, and highly efficient, but in contrast, they have limited brightness and less uniform output. Successful implementation of LEDs for this appli ...
Doctorat doc
... and minimum loss (1550nm) wavelengths of silica. Such fibers provide the backbone of modern optical telecommunication networks. Since the late 1970s these fibers has been manufactured routinely. It is possible to manufacture very long fibers with very low attenuation (0.2dB/km). Multicomponent glass ...
... and minimum loss (1550nm) wavelengths of silica. Such fibers provide the backbone of modern optical telecommunication networks. Since the late 1970s these fibers has been manufactured routinely. It is possible to manufacture very long fibers with very low attenuation (0.2dB/km). Multicomponent glass ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... the Wavelength dependence on refractive index where the spectral components of the laser source (although monochromatic still picture out the Gaussian profile) take up different paths depending upon the refractive index reaching out with different speeds leading to broadening. Waveguide dispersion c ...
... the Wavelength dependence on refractive index where the spectral components of the laser source (although monochromatic still picture out the Gaussian profile) take up different paths depending upon the refractive index reaching out with different speeds leading to broadening. Waveguide dispersion c ...
Electronic Thesis
... On subwavelength scales, photon-matter interactions are limited by diffraction. The diffraction limit restricts the size of optical devices and the resolution of conventional microscopes to wavelength-scale dimensions, severely hampering our ability to control and probe subwavelength-scale optical p ...
... On subwavelength scales, photon-matter interactions are limited by diffraction. The diffraction limit restricts the size of optical devices and the resolution of conventional microscopes to wavelength-scale dimensions, severely hampering our ability to control and probe subwavelength-scale optical p ...
Quantitative spectroscopic photoacoustic imaging
... There are several mechanisms by which light can be used to generate sound waves.15–17 PA imaging usually uses light in the non-ionizing visible or near-infrared (NIR) parts of the spectrum because the NIR “window” (a range of wavelengths over which both water absorption and tissue scattering are low ...
... There are several mechanisms by which light can be used to generate sound waves.15–17 PA imaging usually uses light in the non-ionizing visible or near-infrared (NIR) parts of the spectrum because the NIR “window” (a range of wavelengths over which both water absorption and tissue scattering are low ...
Optics and Quantum Electronics—J. G. Fujimoto, H. A. Haus, E. P. Ippen, F. X. Kärtner
... Solid state lasers can have gain over extremely broad bandwidths of several hundred nanometers, enabling the generation of few cycle pulse durations or longer pulse durations with broad tunability. In addition, self-phase modulation (SPM) is a temporal nonlinear effect originating in the Kerr nonlin ...
... Solid state lasers can have gain over extremely broad bandwidths of several hundred nanometers, enabling the generation of few cycle pulse durations or longer pulse durations with broad tunability. In addition, self-phase modulation (SPM) is a temporal nonlinear effect originating in the Kerr nonlin ...
Spatiotemporal superposed rogue-wave
... from nowhere and disappear without a trace [1]. RWs in higher-order NLSE were also discussed [3]. Akhmediev et al. reported how to excite a rogue wave [2]. Experimentally, Solli et al. [32] reported a randomly created optical rogue wave in a photonic crystal fiber. Dudley et al. [15] investigated th ...
... from nowhere and disappear without a trace [1]. RWs in higher-order NLSE were also discussed [3]. Akhmediev et al. reported how to excite a rogue wave [2]. Experimentally, Solli et al. [32] reported a randomly created optical rogue wave in a photonic crystal fiber. Dudley et al. [15] investigated th ...
Subnanometer-accuracy optical distance ruler based on fluorescence quenching by transparent conductors R
... (TPD), with peak emission at 600 nm, and Alexa Fluor 430, with peak emission at 540 nm] are dispersed onto the cover glasses at concentrations that are close to, but slightly higher than, those typically used for single-molecule studies. This way we average over a few to a few tens of molecules per ...
... (TPD), with peak emission at 600 nm, and Alexa Fluor 430, with peak emission at 540 nm] are dispersed onto the cover glasses at concentrations that are close to, but slightly higher than, those typically used for single-molecule studies. This way we average over a few to a few tens of molecules per ...
Quantitative prediction of the modulation behavior of twisted nematic liquid
... the response of ideal optical elements which are designed as phase-only or amplitude-only functions. This coupling effect may be reduced by the design of elements adapted to the restricted coding domain of SLMs [4,5]. Another approach consists in looking for the configuration of polarizing elements ...
... the response of ideal optical elements which are designed as phase-only or amplitude-only functions. This coupling effect may be reduced by the design of elements adapted to the restricted coding domain of SLMs [4,5]. Another approach consists in looking for the configuration of polarizing elements ...
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 ...
All-angle negative refraction and imaging in a visible region
... be described as indefinite materials, where the transverse and longitudinal effective permittivities are different in signs as introduced by Smith and Schruig [30]. In this paper we study and design a bulk indefinite material composed of aligned arrays of metallic nanowires in a dielectric matrix, t ...
... be described as indefinite materials, where the transverse and longitudinal effective permittivities are different in signs as introduced by Smith and Schruig [30]. In this paper we study and design a bulk indefinite material composed of aligned arrays of metallic nanowires in a dielectric matrix, t ...
Chapter 4 - Refractometry - Index of Refraction
... source is white light, the shadow edge is a color spectrum, usually appearing as a narrow bluegreen band, which may be more easily recognized than a sharp, but faint, shadow edge. A sharp edge is read with much greater accuracy, however, and requires a monochromatic light source, usually provided by ...
... source is white light, the shadow edge is a color spectrum, usually appearing as a narrow bluegreen band, which may be more easily recognized than a sharp, but faint, shadow edge. A sharp edge is read with much greater accuracy, however, and requires a monochromatic light source, usually provided by ...
Full text - Simon Fraser University
... Single measurements of the peak intensity as a function of the difference of the peak frequencies in E12g (black) and A1g (red) modes for MoS2 on gel (a) and on wax (b). The thickness of 1-4 layers and bulk were confirmed. As for thicker layers, the thickness of layers were roughly determined by the c ...
... Single measurements of the peak intensity as a function of the difference of the peak frequencies in E12g (black) and A1g (red) modes for MoS2 on gel (a) and on wax (b). The thickness of 1-4 layers and bulk were confirmed. As for thicker layers, the thickness of layers were roughly determined by the c ...
Total Internal Reflection Spectroscopy for Studying Soft Matter
... of (most) bulk phases. The disadvantage of the selection rule-based approach is that nonlinear optical techniques are experimentally demanding (in sum-frequency generation two pulsed lasers of different wavelengths must be delivered to the sample simultaneously) and can be difficult to interpret. Fu ...
... of (most) bulk phases. The disadvantage of the selection rule-based approach is that nonlinear optical techniques are experimentally demanding (in sum-frequency generation two pulsed lasers of different wavelengths must be delivered to the sample simultaneously) and can be difficult to interpret. Fu ...
Silicon photonics
Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI).Silicon photonic devices can be made using existing semiconductor fabrication techniques, and because silicon is already used as the substrate for most integrated circuits, it is possible to create hybrid devices in which the optical and electronic components are integrated onto a single microchip. Consequently, silicon photonics is being actively researched by many electronics manufacturers including IBM and Intel, as well as by academic research groups such as that of Prof. Michal Lipson, who see it is a means for keeping on track with Moore's Law, by using optical interconnects to provide faster data transfer both between and within microchips.The propagation of light through silicon devices is governed by a range of nonlinear optical phenomena including the Kerr effect, the Raman effect, two photon absorption and interactions between photons and free charge carriers. The presence of nonlinearity is of fundamental importance, as it enables light to interact with light, thus permitting applications such as wavelength conversion and all-optical signal routing, in addition to the passive transmission of light.Silicon waveguides are also of great academic interest, due to their ability to support exotic nonlinear optical phenomena such as soliton propagation.