Analysing the potential for application of the phase shift method in
... Despite rapid technological development in measuring methods used in industrial endoscopy, precise measurement of the dimensions of the detected surface defects is still a challenging problem. New opportunities in this area have been brought by various 3D scanning techniques which consist in convert ...
... Despite rapid technological development in measuring methods used in industrial endoscopy, precise measurement of the dimensions of the detected surface defects is still a challenging problem. New opportunities in this area have been brought by various 3D scanning techniques which consist in convert ...
Observational Astronomy
... Refractors are based on lenses Easy to make, can combine several elements ...
... Refractors are based on lenses Easy to make, can combine several elements ...
Full-Spectrum, Angle-Resolved Reflectance and
... Optical coatings composed of thin films of dielectric materials have long been commonplace in both the optics and glass industries. For instance, stacks of alternating high- and lowrefractive-index layers are used to form Bragg mirrors in laser cavities, and magnesium fluoride layers are used as ant ...
... Optical coatings composed of thin films of dielectric materials have long been commonplace in both the optics and glass industries. For instance, stacks of alternating high- and lowrefractive-index layers are used to form Bragg mirrors in laser cavities, and magnesium fluoride layers are used as ant ...
Slide 1
... Laser light has three unique characteristics, that make it different than "ordinary" light. It is: ...
... Laser light has three unique characteristics, that make it different than "ordinary" light. It is: ...
... abruptly at a surface and is constant between the surfaces. The refraction of light at surfaces separating media of different refractive indices makes it possible to construct imaging lenses. Glass surfaces can be shaped. Electron optics: Here, changes in the “refractive index” are gradual so rays a ...
Optical diffraction tomography for high resolution live cell imaging
... The quantitative refractive index maps thus obtained can be used to quantify molecular concentrations without adding fluorescence agents [23]. They also provide a means of studying the light scattering of single cells [24], which may lead to develop in-vivo light scattering instruments for disease d ...
... The quantitative refractive index maps thus obtained can be used to quantify molecular concentrations without adding fluorescence agents [23]. They also provide a means of studying the light scattering of single cells [24], which may lead to develop in-vivo light scattering instruments for disease d ...
Strategies for the compensation of specimen
... We now look at the effects of using the iris to reduce the pupil size (effective NA) when focusing to a certain depth in the dermis. The specifications of the lenses we consider are typical of those currently commercially available. For all the following examples we take the wavelength of the illumi ...
... We now look at the effects of using the iris to reduce the pupil size (effective NA) when focusing to a certain depth in the dermis. The specifications of the lenses we consider are typical of those currently commercially available. For all the following examples we take the wavelength of the illumi ...
Enhancement of coherent X-ray diffraction from nanocrystals by
... an enormous enhancement of intensity. We have made preliminary attempts at inverting the diffraction patterns using our iterative FFT method [3], so far without success. An important question, which we discuss here at some length is whether the distortions due to focussing the incident beam can spoi ...
... an enormous enhancement of intensity. We have made preliminary attempts at inverting the diffraction patterns using our iterative FFT method [3], so far without success. An important question, which we discuss here at some length is whether the distortions due to focussing the incident beam can spoi ...
20170327_AH_Interference
... transmitted, the rest will be reflected, and the two parts must be coherent with each other. Filament light bulbs and strip lights do not emit coherent radiation. Such sources are called extended sources, or incoherent sources. They emit light of many different wavelengths, and light is emitted from ...
... transmitted, the rest will be reflected, and the two parts must be coherent with each other. Filament light bulbs and strip lights do not emit coherent radiation. Such sources are called extended sources, or incoherent sources. They emit light of many different wavelengths, and light is emitted from ...
Document
... It can probe molecular assemblies such as SAMS. Doesn’t change their physical characteristics. Determines whether you have single or multiple layers assembled on a surface. ...
... It can probe molecular assemblies such as SAMS. Doesn’t change their physical characteristics. Determines whether you have single or multiple layers assembled on a surface. ...
PDF only - at www.arxiv.org.
... the group velocity reduction below the speed of light in the case of certain Bessel beam pulses has been considered and an idea of its application for a natural optical buffer presented. However, the authors treat the problem as if only one type of Bessel pulse existed, no matter how it is gener ...
... the group velocity reduction below the speed of light in the case of certain Bessel beam pulses has been considered and an idea of its application for a natural optical buffer presented. However, the authors treat the problem as if only one type of Bessel pulse existed, no matter how it is gener ...
Pulse spreading due to dispersion
... value of zero at a wavelength of about 1.3 µm, which was therefore initially thought to be the optimum wavelength for optical communications. With the advent of erbium-doped fiber amplifiers (EDFA’s) that operate at wavelengths near 1.55 µm, attention moved to those longer wavelengths. Fiber designe ...
... value of zero at a wavelength of about 1.3 µm, which was therefore initially thought to be the optimum wavelength for optical communications. With the advent of erbium-doped fiber amplifiers (EDFA’s) that operate at wavelengths near 1.55 µm, attention moved to those longer wavelengths. Fiber designe ...
Fundamental Limit to Linear One-Dimensional Slow Light Structures
... systems that are linear in the optical signal field, and that can be written in terms of a one-dimensional wave equation. This limit is otherwise completely independent of design, and only depends on (a) the largest magnitude η max of relative variation of the dielectric constant in the structure wi ...
... systems that are linear in the optical signal field, and that can be written in terms of a one-dimensional wave equation. This limit is otherwise completely independent of design, and only depends on (a) the largest magnitude η max of relative variation of the dielectric constant in the structure wi ...
Pulse Delay Chromatic Dispersion Measurements in Single Mode
... the Internet and its applications such as teleconferencing. Optic fibre does not only play a pivotal role in the telecommunication industry but it is also an important component in the field of medicine, where it is used in laparoscopic surgery and also in laser surgery. Other uses such as the trans ...
... the Internet and its applications such as teleconferencing. Optic fibre does not only play a pivotal role in the telecommunication industry but it is also an important component in the field of medicine, where it is used in laparoscopic surgery and also in laser surgery. Other uses such as the trans ...
Determination of the transfer function for optical surface topography
... system is also ‘linear in the square of the scattering potential’. Partially coherent systems are inherently more complicated, with image formation no longer describable using an OTF. Instead, the so-called transmission cross-coefficient (TCC) [36, 38] must be defined which describes the attenuation ...
... system is also ‘linear in the square of the scattering potential’. Partially coherent systems are inherently more complicated, with image formation no longer describable using an OTF. Instead, the so-called transmission cross-coefficient (TCC) [36, 38] must be defined which describes the attenuation ...
Overlay Network Andreas Holmqvist, Alexander Kronstrand Information Coding
... possible in optics since you cannot store light. Today optical buffering is done by delaying light with different techniques, some of them are fiber loops, slowing light using meta-materials, semiconductors and slowing light using photonic crystals.[7] Conversion of communication signals from light ...
... possible in optics since you cannot store light. Today optical buffering is done by delaying light with different techniques, some of them are fiber loops, slowing light using meta-materials, semiconductors and slowing light using photonic crystals.[7] Conversion of communication signals from light ...