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Metamaterials at Optical Frequencies: Fabrication and Measurements
Metamaterials at Optical Frequencies: Fabrication and Measurements

document
document

... The index of refraction of a medium is usually a function of the wavelength of the light. It is larger at shorter wavelengths. Consequently, a light beam consisting of rays of different wavelength (e.g., sun light) will be refracted at different angles at the interface of two different media. This s ...
Lab 7: Fabry-Perot Interferometer
Lab 7: Fabry-Perot Interferometer

... successive sets of peaks in the transmitted spectrum. The resolving power of the device tells us the minimum difference between two wavelengths that can be distinguished. We will use the Rayleigh criterion to define this property. The criterion states that the separation of the peaks corresponding t ...
Spectral Domain Optical Coherence Tomography
Spectral Domain Optical Coherence Tomography

... A-scans were acquired at a rate of 29 000 per second (6 µm axial resolution) and 14 500 per second (3.5 µm axial resolution). In Figure 1, the experimental setup is shown.9-12 The light sources were a commercially available superluminescent diode (SLD) (Superlum Diodes Ltd, Moscow, Russia) with a po ...
optically active substances.
optically active substances.

6.1. Gabor`s (In-line) Holography. In 1948, Dennis Gabor introduced
6.1. Gabor`s (In-line) Holography. In 1948, Dennis Gabor introduced

... 6.2. Leith and Upatnieks’ (Off-axis) Holography. The advancement of holography, from Gabor’s initial work to the more practical implementation using the off-axis method is well captured by Adolf W. Lohmann [3]: “To a large extent the success of holography is associated with the invention of the off ...
1.1 Objectives
1.1 Objectives

Development of Organic Imaging Device
Development of Organic Imaging Device

... resolution and is capable of utilizing nearly all the incident light, its structure, including its lens, make drastic camera size reduction difficult. In the case of consumer model video cameras and digital cameras, their mainstream imaging system is a single plate color device consisting of three o ...
Single Slit Diffraction & Gratings
Single Slit Diffraction & Gratings

... All the waves that originate at the slit are in phase  Wave 1 travels farther than wave 3 by an amount equal to the path difference (w/2)sinθ  If this path difference is exactly half of a wavelength, the two waves cancel each other and destructive interference results  In general, destructive int ...
Palladium Ultra Thin Layer Profiles Evaluation by Evanescent Light
Palladium Ultra Thin Layer Profiles Evaluation by Evanescent Light

... DELI is an optical evanescent waves microscopy technique based on capturing the light extracted by nano layers deposited on a substrate which also serves as a waveguide [2,3]. The DELI technique used in this investigation is a far field optical microscopy measurement technique developed to achieve a ...
optical design of an echelle grating based atomic emission
optical design of an echelle grating based atomic emission

Inverse Problems in Astronomical Adaptive Optics
Inverse Problems in Astronomical Adaptive Optics

... This leads to severe degradation in the quality of images that can be obtained with a telescope. The purpose of AO in astronomy is to physically compensate for these distortions, thereby greatly improving image quality. The limitations imposed by atmospheric turbulence upon astronomical image qualit ...
Path-reversed substrate-guided- wave optical interconnects for
Path-reversed substrate-guided- wave optical interconnects for

... DuPont photopolymers ~DuPont Holographic Materials, Wilmington, Delaware! are promising as holographic films because of their dry-processing capacity, long shelf life, good photospeed, and high index modulation.26 –29 The holographic photopolymer is usually coated in the solvent state onto a clear s ...
Isolated hexaphenyl nanofibers as optical waveguides
Isolated hexaphenyl nanofibers as optical waveguides

... waveguiding properties require an analytical theory for optical waveguiding in nanometer-scaled aggregates. Motivated by the force microscopy images, we assume the nanofiber to have a rectangular cross section and to be an optically uniaxial medium with the dielectric tensor component ⑀ 储 along the ...
Chaotic dynamics of frequency combs generated with continuously
Chaotic dynamics of frequency combs generated with continuously

... stable frequency comb Fig. 4. The comb is started from chaotic oscillations, but when the laser frequency moves to to the position where regular solutions are allowed, the oscillation pattern changes. The modification of the oscillation regime is accompanied by intricate comb dynamics. This is not t ...
Color Astronomical Imaging Using Polarizing Filters
Color Astronomical Imaging Using Polarizing Filters

... the differencing of the polarizer channels. While an ingenious process, practical considerations involving the film medium made the process somewhat difficult in comparison with today’s digital methods. In this work the all-digital technique used by the author permitted complete freedom in selecting ...
Lab
Lab

... goes to zero at some angle between 0° and 90°, the reflected light at that angle is linearly polarized with its electric field vectors perpendicular to the plane of incidence. The angle at which this occurs is called the polarizing angle or the Brewster angle. At other angles the reflected light is ...
Optical power - WordPress.com
Optical power - WordPress.com

... rates between core and cladding. Geometric imperfection along the axis.  constant radius bend – excessive pressure and tension during handling and installation ...
The Spectrum Analyzer and The Mode Structure
The Spectrum Analyzer and The Mode Structure

Confocal optical microscopy
Confocal optical microscopy

... finite aperture of the objective lens. If some other aperture in a plane conjugate to the pupil is smaller than the pupil of the objective lens, then that smaller aperture will control the resolution. For most microscopes (and indeed for most optical devices) the field of view is less than 1000 reso ...
Theoretical analysis of phase-matched second
Theoretical analysis of phase-matched second

The NAD 3100 series of three-fiber optical multiplexers are used to
The NAD 3100 series of three-fiber optical multiplexers are used to

... The HWM 1100A series of DWDM optical passives are used to implement Harmonic's DWDM solutions. Due to their exceptional flatness and performance, these multiplexers can be used to either multiplex or demultiplex a set of wavelengths on the ITU Grid. This allows the operator to reduce the number of s ...
three-dimensional solutions in media with spatial dependence of
three-dimensional solutions in media with spatial dependence of

... optical pulses, which admit angular dependence of electrical field or helical phase distribution. The electrical field or intensity is zero also in the center of the vortices. The original scalar theory of optical vortices was based on the well known 2D+1 NSE [10–12]. In a self ...
Optically polarized atoms_Light_Polarization
Optically polarized atoms_Light_Polarization

... The simplest description is in the photon picture : A photon is a particle with intrinsic angular momentum one ( ) ...
Vision Improvement by Correcting Higher
Vision Improvement by Correcting Higher

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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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