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Visualization of modification of electric and magnetic dipole emission
Visualization of modification of electric and magnetic dipole emission

... The effects of the local environment on spontaneous emission are commonly discussed in terms of the Purcell effect [1] accounting for a modification of the photonic mode density and a subsequent alteration of the dipole emission rate [2-5]. Depending on the degree of modification of electric and mag ...
Guided Wave Analysis of Hollow Optical Fiber for Mode
Guided Wave Analysis of Hollow Optical Fiber for Mode

... and HE and EH are twofold degenerate modes. In the calculation, we assumed the cladding diameter of 125 m, surrounded by air of refractive index 1. We also included the material dispersion in both cladding and ring core. Due to presence of the central air hole, the cladding modes of HOF also showed ...
Region segmentation and parallel processing for creating large
Region segmentation and parallel processing for creating large

... electronically on the screen by using some spatial light modulator such as LCD. For the last decade, object fields in the first step is obtained by superimposing spherical waves on the hologram, which are emitted from point sources of light spreading over the surface of the virtual object. This method ...
Theoretical study on Brillouin fiber laser sensor Omer Kotlicki, Jacob Scheuer,
Theoretical study on Brillouin fiber laser sensor Omer Kotlicki, Jacob Scheuer,

... Optical interferometers and resonators constitute among the most precise physical measurement approaches, rendering them key-components for numerous and diverse research fields [1,2]. The applications for such devices range from fundamental scientific studies requiring ultra-precision measurements [ ...
vapor liquid - UPB Sci Bull
vapor liquid - UPB Sci Bull

... We have studied analytically the laser -field induced Freedericksz transition in an homeotropic aligned NLC, taking into account the surface anchoring effects. We have calculated the threshold intensity of the laser beam producing the transition and the saturation intensity as a functions of the anc ...
Interface Reaction between a Metal Mirror Layer and a Dielectric
Interface Reaction between a Metal Mirror Layer and a Dielectric

... formed by decomposition or degeneration of the dye succeeded by deformation of the metal reflective layer, resulting in reflectance decrease. The organic dye is designed to have a specific spectral absorption feature around the recording and playing wavelength so as to have an appropriate recording ...
Light manipulation with encoded plasmonic nanostructures Chenglong Zhao , Jiasen Zhang
Light manipulation with encoded plasmonic nanostructures Chenglong Zhao , Jiasen Zhang

Holographic low-energy electron diffraction
Holographic low-energy electron diffraction

... lower right panel of figure 2. However, it can only emerge in directions compatible with the substrate translational symmetry and so does not contribute to the continuous intensity distribution created by the symmetry-breaking beam-splitter atom. So, it causes no problems in many cases. Yet, there i ...
Fiber Waveguide
Fiber Waveguide

... takes the shortest path but travels most slowly as the index is largest along this path. Oblique rays have a large part of their path in a medium of lower refractive index, where they travel faster. It is therefore possible for all rays to arrive together at the fiber output by a suitable choice of ...
Fast-light for astrophysics - Laboratory for Atomic and Photonic
Fast-light for astrophysics - Laboratory for Atomic and Photonic

... research over the last decade [1–3]. Researchers have found new ways of controlling the index of refraction of various materials by combining laser beams of different frequencies which interact with them. In particular, we are able to achieve strong dispersion at frequencies where the material is tra ...
X = k R(  ) P(  )(  ) d   (1)
X = k R( ) P( )( ) d (1)

... of brilliant minds over the past centuries starting with Newton, who understood that these colors must be due to the presence of “thin film structures” [1]. Since then, much progress has been made and it is now recognized that many of these brilliant colors are due to various kinds of microstructure ...
laser-based fibre-optic sensor for measurement of surface properties
laser-based fibre-optic sensor for measurement of surface properties

... Literature Survey - Fibre-Optic Technology ...
Size Influence on the Propagation Loss Induced by Sidewall
Size Influence on the Propagation Loss Induced by Sidewall

... potentiality of monolithic integration of optical and electronic functions on a single substrate. As silicon is transparent at wavelengths larger than 1.1 m, including the optical communication bands, the silicon film of SOI substrates can be used to fabricate low-loss submicrometer optical waveguid ...
blah
blah

... Figure S4 PL spectrum measured in a bulk InSe sample. Deconvolution of this spectrum has resulted into five Gaussian components, which have been included. ...
Inducing Vortices in a Bose-Einstein Condensate using light beams
Inducing Vortices in a Bose-Einstein Condensate using light beams

... which can then be moved around to transfer angular momentum to the cloud. The trap anisotropy is usually created by either changing the magnetic field that traps the atoms and having it rotate, or, more commonly, by moving the focus of a detuned laser beam around in the cloud and thus adding an AC-St ...
Light–matter interaction induces a single positive vortex with swirling
Light–matter interaction induces a single positive vortex with swirling

... Optical vortexes have mainly been generated with spiral phase plates [17] or diffractive elements [18]. Recently, the introduction of q-plates, planar elements with a pre-set azimuthal orientation in nematic liquid crystals (LCs), has opened up promising new avenues [19], as well as exploiting the u ...
full text pdf
full text pdf

... valuable basic information about optical properties of that structure, valuable for diverse applications. The near−field's complicated pattern contains both, the components able to propagate and components confined to the surface and damped outside. Our study refers to the near−field imaging techniq ...
Electrodynamical Light Trapping Using Whispering-Gallery Resonances in Hyperbolic Cavities Chihhui Wu, Alessandro Salandrino,
Electrodynamical Light Trapping Using Whispering-Gallery Resonances in Hyperbolic Cavities Chihhui Wu, Alessandro Salandrino,

Communication Cables
Communication Cables

... Teltec, Uganda applied to the cable during the installation period. ...
Experiments on Elastic Cloaking in Thin Plates
Experiments on Elastic Cloaking in Thin Plates

Large acceptance of non-collinear phase
Large acceptance of non-collinear phase

... The statistic we obtain from three bandwidth experiments illustrates that the surface complete phase-matching SHG has a large acceptance bandwidth of angle, temperature, and wavelength. A single total reflection on the surface could provide high conversion efficiency which is up to 15.74% with a sho ...
Advance Program Sunday, October 12, 2014 Sunday Session
Advance Program Sunday, October 12, 2014 Sunday Session

... A novel scalable coupling approach for single mode VCSELs and planar optical waveguides is presented. The coupling is based on the embedding of the VCSELs inside the substrate and the adaptive fabrication of waveguides on top, realizing 1 um alignment accuracy. MC1.2 8:45 AM - 9:15 AM (Invited) Pol ...
Plasmonic Metamaterials
Plasmonic Metamaterials

... The fundamentals, developments and applications of metamaterials and plasmonics have been discussed in many review articles. However, they focus on either metamaterials or plasmonics, rather than the remarkable properties and effects originating from the interplay between these two areas. As demonst ...
Laser Bandwidth Measurements in Fiber Data Delivery for Corning
Laser Bandwidth Measurements in Fiber Data Delivery for Corning

... fiber network that will support 300 meters at 10 Gb/s (among other solutions).3 Any network installed in accordance with this standard can then be relied upon to perform in accordance with the standard. Sometimes, however, end-users may need a longer reach or need to use more connectors, and will se ...
claudia patricia valdés escobar
claudia patricia valdés escobar

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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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