here - Optoelectronics Research Centre
... because of the intensity noise, the clarity of the OCT image can be sacrificed even though much finer axial resolution can be obtained when using this technology. Using a commercial supercontinuum SC450 (Fianium, UK) source, its performance in terms of its interference signal shape and its relative ...
... because of the intensity noise, the clarity of the OCT image can be sacrificed even though much finer axial resolution can be obtained when using this technology. Using a commercial supercontinuum SC450 (Fianium, UK) source, its performance in terms of its interference signal shape and its relative ...
Plasmonic Metamaterials
... a dielectric-metal interface can be obtained by solving Maxwell’s equations and applying proper boundary conditions. Denoting the dielectric constant of the metal and the dielectric material as ...
... a dielectric-metal interface can be obtained by solving Maxwell’s equations and applying proper boundary conditions. Denoting the dielectric constant of the metal and the dielectric material as ...
Fabrication of functional surfaces using ultrashort laser pulse ablation
... with replication methods. It is well known that sufficiently small surface structures reflect and deflect light in a way that can not be handled with geometrical optics. Naturally, when considering materials like metals, only reflected waves are observed. If the periodicity of the structures is in t ...
... with replication methods. It is well known that sufficiently small surface structures reflect and deflect light in a way that can not be handled with geometrical optics. Naturally, when considering materials like metals, only reflected waves are observed. If the periodicity of the structures is in t ...
Highly doped InP as a low loss plasmonic material for
... alternatives has its own preferential wavelength range due to the available free carrier concentrations and mobilities. Semiconductors benefit from lower optical losses resulting from their high mobilities [19], drastic tunability of plasmonic properties via doping, the possibility of active control ...
... alternatives has its own preferential wavelength range due to the available free carrier concentrations and mobilities. Semiconductors benefit from lower optical losses resulting from their high mobilities [19], drastic tunability of plasmonic properties via doping, the possibility of active control ...
A simple peak-to-average power ratio reduction
... this scheme is to divide the overall discrete Fourier transformation (DFT) into multiple phase-shifting and optical delay operations. In this kind of ODFT, the phase-shiftings are implemented by phase shifters and the optical delays are implemented by delay lines. The other is based on silica PLC te ...
... this scheme is to divide the overall discrete Fourier transformation (DFT) into multiple phase-shifting and optical delay operations. In this kind of ODFT, the phase-shiftings are implemented by phase shifters and the optical delays are implemented by delay lines. The other is based on silica PLC te ...
Full-angle Negative Reflection with An Ultrathin Acoustic
... metasurface sample is sandwiched between two pieces of tempered glass(1.9 m length, 1.8 m width, 7 mm thick) and the gap is chosen as 5 cm, of which the cutoff frequency is higher than the operating frequency. Here, the incident acoustic wave is generated by 20 tightly arrayed loudspeakers, and the ...
... metasurface sample is sandwiched between two pieces of tempered glass(1.9 m length, 1.8 m width, 7 mm thick) and the gap is chosen as 5 cm, of which the cutoff frequency is higher than the operating frequency. Here, the incident acoustic wave is generated by 20 tightly arrayed loudspeakers, and the ...
evanescent wave based biosensors
... "Evanescent" means "tending to vanish", which is because the intensity of evanescent waves decays exponentially (rather than sinusoidally) with distance from the interface at which they are formed. Evanescent waves are formed when sinusoidal waves are (internally) reflected off an interface at an a ...
... "Evanescent" means "tending to vanish", which is because the intensity of evanescent waves decays exponentially (rather than sinusoidally) with distance from the interface at which they are formed. Evanescent waves are formed when sinusoidal waves are (internally) reflected off an interface at an a ...
Handbook of Optical Filters for Fluorescence Microscopy
... The extinction coefficient tells us how much of the incident light will be absorbed by a given dye concentration and specimen thickness, and reflects the wavelength-dependent absorption characteristics indicated by the excitation spectrum of the fluorochrome. Although many of the fluorochromes have ...
... The extinction coefficient tells us how much of the incident light will be absorbed by a given dye concentration and specimen thickness, and reflects the wavelength-dependent absorption characteristics indicated by the excitation spectrum of the fluorochrome. Although many of the fluorochromes have ...
Honors Physics Final Review Spring 2015
... The process of charging a conductor by bring it near another charged object and grounding the conductor is called: ans: induction The force acting between two charged bodies is directly proportional to the size of the bodies and inverse to the distance squared between the bodies is what Law: ans: C ...
... The process of charging a conductor by bring it near another charged object and grounding the conductor is called: ans: induction The force acting between two charged bodies is directly proportional to the size of the bodies and inverse to the distance squared between the bodies is what Law: ans: C ...
Focal shift of silicon microlen array in mid
... employed to model the focal shift effect of MLAs in mid-infrared regime. Numerical calculation revealed a more pronounced focal shift with a factor of about 0.37~0.43. We have also traced the focal shift of MLAs in mid-infrared regime experimentally and confirmed the simulation. The effect of fabric ...
... employed to model the focal shift effect of MLAs in mid-infrared regime. Numerical calculation revealed a more pronounced focal shift with a factor of about 0.37~0.43. We have also traced the focal shift of MLAs in mid-infrared regime experimentally and confirmed the simulation. The effect of fabric ...
de Sénarmont Bias Retardation in DIC Microscopy Introduction
... conjugate focal plane of the iris diaphragm aperture. Incident wavefronts are sheared by the prism into orthogonal polarized components separated by less than a micrometer, rendered parallel by the condenser optical system, and then utilized to illuminate the specimen. Positioned behind the objectiv ...
... conjugate focal plane of the iris diaphragm aperture. Incident wavefronts are sheared by the prism into orthogonal polarized components separated by less than a micrometer, rendered parallel by the condenser optical system, and then utilized to illuminate the specimen. Positioned behind the objectiv ...
Variable Incidence Angle Fluorescence Interference Contrast
... using relatively straightforward lithographic methods. Interference between the incoming and reflected excitation light creates a very well defined variation in the excitation intensity, and the different SiO2 step thicknesses move the fluorescent molecules in z relative to the interference pattern. ...
... using relatively straightforward lithographic methods. Interference between the incoming and reflected excitation light creates a very well defined variation in the excitation intensity, and the different SiO2 step thicknesses move the fluorescent molecules in z relative to the interference pattern. ...
Reference Guide to Fiber Optic Testing Glossary Reference Guide to Fib
... Power loss occurring when the transmitting fiber diameter is greater than the receiving fiber diameter. This loss may occur when coupling a source to fiber, fiber to fiber, or fiber to detector. Light loss Light in Light loss ...
... Power loss occurring when the transmitting fiber diameter is greater than the receiving fiber diameter. This loss may occur when coupling a source to fiber, fiber to fiber, or fiber to detector. Light loss Light in Light loss ...
Chapter 3 - Optoelectronics Research Centre
... The quality of the HF end cut could be assessed either by illuminating it with a white light source, and observing it under a microscope, or by coupling in laser light and observing the radiation pattern on a monitor. A circularly symmetric and uniform pattern essentially implies a good cleave. To s ...
... The quality of the HF end cut could be assessed either by illuminating it with a white light source, and observing it under a microscope, or by coupling in laser light and observing the radiation pattern on a monitor. A circularly symmetric and uniform pattern essentially implies a good cleave. To s ...
K.C. Neuman and S.M. Block, "Optical Trapping"
... practical matter, it can be difficult to work with objects smaller than can be readily observed by video microscopy 共⬃0.1 m兲, although particles as small as ⬃35 nm in diameter have been successfully trapped. Dielectric microspheres used alone or as handles to manipulate other objects are typically ...
... practical matter, it can be difficult to work with objects smaller than can be readily observed by video microscopy 共⬃0.1 m兲, although particles as small as ⬃35 nm in diameter have been successfully trapped. Dielectric microspheres used alone or as handles to manipulate other objects are typically ...
Light amplificated by stimulated emission of radiation
... (see below) are determined by the local properties of the waveguide. There are also mixed types of resonators, containing both waveguides and parts with free-space optical propagation. Such resonators are used e.g. in some fiber lasers, where bulk-optical components need to be inserted into the lase ...
... (see below) are determined by the local properties of the waveguide. There are also mixed types of resonators, containing both waveguides and parts with free-space optical propagation. Such resonators are used e.g. in some fiber lasers, where bulk-optical components need to be inserted into the lase ...
Optical Behavior of Pellicles
... While designed to protect the mask from particles, pellicles are in fact optical elements within the imaging system. Their distance from the mask (on the order of 5 mm) puts them in the far field (the Fraunhofer diffraction region), so that pellicles can be treated like pupil filters. Thus, to under ...
... While designed to protect the mask from particles, pellicles are in fact optical elements within the imaging system. Their distance from the mask (on the order of 5 mm) puts them in the far field (the Fraunhofer diffraction region), so that pellicles can be treated like pupil filters. Thus, to under ...
laser-based fibre-optic sensor for measurement of surface properties
... The optical disk player has comprehensively replaced use o f the mechanical stylus in 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 scatt ...
... The optical disk player has comprehensively replaced use o f the mechanical stylus in 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 scatt ...
High optical absorption in graphene
... If we were to freely tune the optical properties of a film with the thickness of a single layer of graphene, the maximum attainable light absorption would be dictated by the contrast of the surrounding media [5]. This general limit for light absorption in ultrathin films may under favorable conditio ...
... If we were to freely tune the optical properties of a film with the thickness of a single layer of graphene, the maximum attainable light absorption would be dictated by the contrast of the surrounding media [5]. This general limit for light absorption in ultrathin films may under favorable conditio ...
High luminance hybrid light guide plate for
... could control the light field well in one dimension. We could effectively make the rays be collimated without much energy loss. For the conventional backlight module [22], most rays do recycling between the two BEFs and the light-guide, so there is more energy loss coming from the absorption and th ...
... could control the light field well in one dimension. We could effectively make the rays be collimated without much energy loss. For the conventional backlight module [22], most rays do recycling between the two BEFs and the light-guide, so there is more energy loss coming from the absorption and th ...
Optical switches
... • An optical multiplexer receives many wavelengths from many fibers and converges them into one beam that is coupled into a single fiber • An optical demultiplexer receives a beam (consisting of multiple optical frequencies) from a fiber and separates it into its frequency components, which are dire ...
... • An optical multiplexer receives many wavelengths from many fibers and converges them into one beam that is coupled into a single fiber • An optical demultiplexer receives a beam (consisting of multiple optical frequencies) from a fiber and separates it into its frequency components, which are dire ...
00800001a2_9.pdf
... a distance much larger than the pinhole separation. Then interference fringes can be seen in the overlapping area. The simple demonstration is the well-known Young experiment. In 1816 Fresnel and Arago perfected these investigations. Since two orthogonal polarized light waves could not interfere You ...
... a distance much larger than the pinhole separation. Then interference fringes can be seen in the overlapping area. The simple demonstration is the well-known Young experiment. In 1816 Fresnel and Arago perfected these investigations. Since two orthogonal polarized light waves could not interfere You ...
Atmospheric Optics
... reaches an interface between two media such as air and water, a portion of the incident light from the air can be reflected back into the air, some can be refracted as it enters the water (Fig. 22.1), and some can be absorbed and changed into heat (not sketched). Similar processes occur across an ai ...
... reaches an interface between two media such as air and water, a portion of the incident light from the air can be reflected back into the air, some can be refracted as it enters the water (Fig. 22.1), and some can be absorbed and changed into heat (not sketched). Similar processes occur across an ai ...
The Focusing and Talbot Effect of Periodic Arrays of Metallic
... metallic nanoapertures having the same dimensions, which are similar to the patches of nanoholes suggested by Gao et al [17]. Three distinct shapes of nanoapertures named nanowave, nanohole, and nanodot, respectively, are analyzed. In addition to observing the focusing property in the air, as report ...
... metallic nanoapertures having the same dimensions, which are similar to the patches of nanoholes suggested by Gao et al [17]. Three distinct shapes of nanoapertures named nanowave, nanohole, and nanodot, respectively, are analyzed. In addition to observing the focusing property in the air, as report ...
11: Waves and Imaging
... In words, the sum of two oscillations of different frequency is identical to the product of two oscillations: one is the slower varying modulation (at frequency ωmod ) and the other is the more rapidly oscillating average sinusoid (or carrier wave) with frequency ωavg . A perhaps familiar example of ...
... In words, the sum of two oscillations of different frequency is identical to the product of two oscillations: one is the slower varying modulation (at frequency ωmod ) and the other is the more rapidly oscillating average sinusoid (or carrier wave) with frequency ωavg . A perhaps familiar example of ...