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Skylights
Skylights

... midday hours. ...
Vacuum Chamber Design for a Magneto
Vacuum Chamber Design for a Magneto

... If we aim a laser beam towards the glass at a 45◦ angle of incidence, then within the glass its angle of transmission is approximately 29.2◦ (from Eq. 2.5), and upon exiting the glass it leaves at a 45◦ angle once again. The cumulative fraction of transmitted light is T! =0.987 for the component wi ...
Experimental demonstration of near-infrared
Experimental demonstration of near-infrared

... 42. W. Chen, M. D. Thoreson, S. Ishii, A. V. Kildishev, and V. M. Shalaev, “Ultra-thin ultra-smooth and low-loss silver films on a germanium wetting layer,” Opt. Express 18(5), 5124–5134 (2010). ...
Microscopy - Frank`s Hospital Workshop
Microscopy - Frank`s Hospital Workshop

... attached cell will interfere, while if there is no cell attached to the glass, there will be no interference. Interference reflection microscopy can be obtained by using the same elements used by DIC, but without the prisms. Also, the light that is being detected is reflected and not transmitted as ...
Comparison of the sensitivity of air and dielectric
Comparison of the sensitivity of air and dielectric

... fluid which occupies a large region including and surrounding the cavity. In the DH case, the cavity is defined by the fluid itself, which only infiltrates selected holes along a region of length L, see Fig. 1(b). The two structures are thus suited to somewhat different scenarios: the band-edge cavi ...
OPTI 511R, Spring 2015 Problem Set 8 Prof. E. M. Wright Due
OPTI 511R, Spring 2015 Problem Set 8 Prof. E. M. Wright Due

... OPTI 511R, Spring 2015 Due Thursday April 2, 2015 ...
RESONANCE WAVELENGTH DEPENDENCE AND MODE
RESONANCE WAVELENGTH DEPENDENCE AND MODE

... etc. . . ) and patterned nanoparticle arrays with different period have also been thoroughly investigated [36–39]. The design of an optical nanoantenna requires great attention since the conventional radiofrequency and microwave design rules that describe antenna parameters as a function of the oper ...
Rapid BRDF Measurement Using an Ellipsoidal
Rapid BRDF Measurement Using an Ellipsoidal

... the lighting direction along a half of the circular arc of 0 ≤ θi ≤ 180. 4.4 Focusing and Aperture We now consider the optical settings of the projector and camera. Ideally, the aperture should be a pinhole because each ray corresponds to an incident or outgoing angle. For the camera, such settings ...
Low atmospheric density measurement based on Rayleigh
Low atmospheric density measurement based on Rayleigh

... It is a non-intrusive method and the measurement process has no influence on the distribution of the flow field. As it occurs by all kinds of small-scale particles in atmosphere, Rayleigh scattering could reflect the overall density information of the flow field rather than some specific particles. ...
How optics has changed data communications
How optics has changed data communications

... technique can be used to all-optically demultiplex a single channel from an OTDM stream. Thus, the information present in one channel can be duplicated onto the mixing wavelengths, which can be filtered out from the rest of the data channels. One disadvantage of all-optical switching using FWM is th ...
PDF
PDF

Automatic cell nuclei counting
Automatic cell nuclei counting

... increasingly important field because of the high rate of production and the increasing reliance on these images by the biomedical community. Histology images have a large amount of objects of interest (cells, cell compartments such as nuclei…). The first goal of computer-based image analysis is to ...
Fluorescence Fidelity Depends on Filters
Fluorescence Fidelity Depends on Filters

... epifluorescence total-internal-reflection fluorescence (TIRF) microscope, nearly 100% of the laser excitation source is reflected off of the sample-glass interface and directed towards the emission path. Stray light from room lighting does not present a significant problem for confocal fluorescence ...
ORB: An On-chip Optical Ring Bus Communication Architecture for Multi-Processor Systems-on-Chip
ORB: An On-chip Optical Ring Bus Communication Architecture for Multi-Processor Systems-on-Chip

... compatibility which puts constraints on the types of materials and choices of components to be used. Recent technological advances indicate that it is possible to effectively fabricate various types of optical components on a chip. However, there are still significant challenges in efficiently integ ...
Dense plasma diagnostics with an amplitude-division soft-x-ray laser
Dense plasma diagnostics with an amplitude-division soft-x-ray laser

... a 46.9-nm capillary-discharge laser with a wave-frontdivision interferometer based on the Lloyd’s mirror.5,6 The Lloyd’s mirror has the advantage of constituting the simplest possible soft-x-ray interferometer. However, it also presents several limitations. First, the probe and the reference beams a ...
Brownian motion of a colloidal particle immersed in a polymeric
Brownian motion of a colloidal particle immersed in a polymeric

Design and Characteristics of Photonic Crystal Based Optical NOT
Design and Characteristics of Photonic Crystal Based Optical NOT

Optical properties of small-bore hollow glass waveguides
Optical properties of small-bore hollow glass waveguides

... When the waveguides are used in medical or industrial applications, it is often desirable to maintain the spatial purity of the input laser beam because it is necessary to cut or ablate with as small a spot size as possible. To evaluate the mode purity of the output beam, we measured the output beam ...
7_SNOM
7_SNOM

... l=633nm On the left the 1st harmonic signal is collected at fixed amplitude while changing the tipsample distance. Even for tip-sample distance > 200nm ther is a huge signal, arising from cantilever scattering and independent of tip-sample interaction On the right the 2nd harmonic is collected, the ...
Document
Document

... l=633nm On the left the 1st harmonic signal is collected at fixed amplitude while changing the tipsample distance. Even for tip-sample distance > 200nm ther is a huge signal, arising from cantilever scattering and independent of tip-sample interaction On the right the 2nd harmonic is collected, the ...
Aalborg Universitet Compact dipole nanoantenna coupler to plasmonic slot waveguide Andrei
Aalborg Universitet Compact dipole nanoantenna coupler to plasmonic slot waveguide Andrei

Diffuse optical imaging
Diffuse optical imaging

... 2003; Hamaoka et al. 2007; Wolf et al. 2007). It is a valuable technique that has been used to investigate brain function and pathology in both neonates and adults (Obrig & Villringer 2003). Despite its inherent high signal contrast, one limitation of NIRS is its inability to provide spatial informa ...
Digital Fourier Microscopy for Soft Matter Dynamics
Digital Fourier Microscopy for Soft Matter Dynamics

... the dynamics both for large particles, whose motion could be easily followed with particle tracking, and for sub-diffraction scatterers, which can not be individually resolved with visible light. Closely connected to all the above methods is also the so called Fourier Transform Light Scattering (FTLS ...
A Non-Contact Pulse Automatic Positioning Measurement System
A Non-Contact Pulse Automatic Positioning Measurement System

... Pulse reading in scientific terms is to capture the changes of the body’s pulse. According to TCM, the pulse is the blood fluctuation phenomenon triggered by the aortic wall’s elastic relaxation and contraction caused by cardiac ejection. The tip of the artery experiences a similar wave-like fluctua ...
Mid Infrared digital holography and Terahertz imaging
Mid Infrared digital holography and Terahertz imaging

... information of a light wavefront diffracted by an object irradiated with coherent radiation; Gabor understood that this remarkable result could be obtained simply exploiting the interference pattern resulting from the superposition of the radiation coming from the object (object beam) with a portion ...
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Harold Hopkins (physicist)

Harold Horace Hopkins FRS (1918–1994) was a renowned British physicist. His Wave Theory of Aberrations, (published by Oxford University Press 1950), is central to all modern optical design and provides the mathematical analysis which enables the use of computers to create the wealth of high quality lenses available today. In addition to his theoretical work, his many inventions are in daily use throughout the world. These include zoom lenses, coherent fibre-optics and more recently the rod-lens endoscopes which 'opened the door' to modern key-hole surgery. He was the recipient of many of the world's most prestigious awards and was twice nominated for a Nobel Prize. His citation on receiving the Rumford Medal from the Royal Society in 1984 stated: ""In recognition of his many contributions to the theory and design of optical instruments, especially of a wide variety of important new medical instruments which have made a major contribution to clinical diagnosis and surgery.""
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