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ABOUT THE EXTRAORDINARY REFRACTIVE INDEX
ABOUT THE EXTRAORDINARY REFRACTIVE INDEX

... When a beam of light passes through the ADP crystal, results two beams with different properties. One of them is called the ordinary beam which is characterized by an ordinary refractive index, and the other is called extraordinary and is characterized by an extraordinary refractive index. For each ...
LAB LASER OPERATOR
LAB LASER OPERATOR

... Shields, filters, safety glasses, upon CEI/IEC safety rules: care the protection of the people ...
Measuring the Hyperfine Splittings of Lowest Energy Atomic
Measuring the Hyperfine Splittings of Lowest Energy Atomic

... ground to first excited state transitions in rubidium (Rb) using saturated absorption spectroscopy. Motivations for measuring and understanding these energy spacings include serving as a test of quantum mechanical perturbation theory and also the posterity of research at Otterbein University. Upcomi ...
Final Report DURIP AFOSR Grant FA9550-06-1
Final Report DURIP AFOSR Grant FA9550-06-1

... The laser beam passes through a 193nm UV optics group, which consists of a polarizer for parallel or perpendicular polarization of the laser beam, a 6 cm diameter and 15 cm focal length lens with an anti reflection coating, and a 5 cm diameter fused silica window. These are special optics designed t ...
Ultracompact high-efficiency polarizing beam splitter with a hybrid
Ultracompact high-efficiency polarizing beam splitter with a hybrid

... the waveguide mode size). In this Letter we present the numerical design and analysis of an ultracompact high-eff iciency polarizing beam splitter with a high extinction ratio. Numerous approaches to achieving waveguide polarizing beam splitters have been reported in the literature2 – 6; they typica ...
Variable Geometric Phase Polarization Rotators for the Visible
Variable Geometric Phase Polarization Rotators for the Visible

reflection and refraction
reflection and refraction

... Light moving from medium with high n to low n is bent away from the normal. If the angle of refraction > 90 , ...
Components of Optical Networks
Components of Optical Networks

JMG_Paper2_GainingSuperpowersThroughMetamaterials
JMG_Paper2_GainingSuperpowersThroughMetamaterials

... applicable wave. Whereas visible light waves are typically between 380 nanometers and 700 nanometers, radio waves have the longest wavelengths in the electromagnetic spectrum that range between 1 millimeter and 100 kilometers. There are many applications for creating metamaterials that interact with ...
LETTERS
LETTERS

... integration of the optical Bloch equations for a two-level system with a time dependent two-photon Rabi frequency. In our case, the calculated peak two-photon Rabi frequency is V2 y2p ­ 30 kHz, and the predicted width is 0.08h̄k, a factor of 2 less than measured. We do not have an explanation for th ...
Exemption Renewal Request Form
Exemption Renewal Request Form

... images (colour TV) require steep edge filters to split the visible spectrum into several colour channels each of which are recorded separately. This requires that the filters have the steepest edge possible and that they are not affected by viewing angle. This combination of properties is achievable ...
[13] S. Ghost, ST Parker, X. Wang, DL Kaplan and JA Lewis
[13] S. Ghost, ST Parker, X. Wang, DL Kaplan and JA Lewis

... currently scarce, due to the challenges of miniaturization and biocompatibility. However, many examples of biological materials in nature show optimized structures and properties that are superior to synthetic materials4,5. Silk fibers produced by worms and spiders are among the most interesting mat ...
Far-Field Optical Superlens
Far-Field Optical Superlens

Defect-based Photonic Crystal Cavity for Silicon Laser PHYC/ECE 568
Defect-based Photonic Crystal Cavity for Silicon Laser PHYC/ECE 568

Laser-based displays: a review - Optical Microsystems Laboratory
Laser-based displays: a review - Optical Microsystems Laboratory

... proposed in the 1960s [1], it is the availability of lasers emitting red, green, and blue colors that triggered the recent development of portable laser projectors. An immediate advantage of using spectrally pure laser light for displays is the wide color gamut it can produce. Although gas lasers ar ...
Handbook of Optical Filters
Handbook of Optical Filters

... have a quantum efficiency of approximately 0.3, but the actual value can be reduced by processes known as quenching, one of which is photobleaching. The combination of these factors, in addition to the fact that many specimens have very small amounts of stained material in the observed field of view ...
INVESTIGATION OF INJECTION MOLDING PROCESS FOR HIGH
INVESTIGATION OF INJECTION MOLDING PROCESS FOR HIGH

Variable Focus Video: Reconstructing Depth and Video
Variable Focus Video: Reconstructing Depth and Video

... point correspondence problem in stereo easier. While the quality of the depth maps produced by such devices is usually high, they are expensive and require additional devices. Variable Depth-of-Field (DOF) Imaging: The DOF of an imaging system can be extended by reducing the aperture. This however r ...
II. Semiconductor optical amplifier
II. Semiconductor optical amplifier

Zoom in | Zoom out
Zoom in | Zoom out

... each signal was guaranteed, sufficient to make the quantization noise inaudible. • Specification of a recorded bandwidth of 0–20 kHz for each of the two sound signals with a sampling frequency of 44.3 kHz. The error correction code should ideally be based on the error statistics of mass produced CD ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

Energy Flow and Poynting Vector
Energy Flow and Poynting Vector

... The picture also makes clear why the polarized beam emerging from a polarizer has a lower intensity than the incoming beam, and also how much lower it will be. If we want to make life easier we can replace a large number of beams with random polarization directions (red vectors) by just two beams at ...
Optics of a Faraday
Optics of a Faraday

... qualitatively very useful, a theory for pointlike scatterers in a magnetic field, as first developed by MacKintosh and John4 and later refined by van Tiggelen et al.,5 does not always describe observations quantitatively, for the obvious reason that experiments do not contain small scatterers. In th ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... an electromagnetic field”. Gradient forces occur whenever a transparent material with a refractive index greater than its surrounding medium is placed within a light gradient. The gradient force acts in the direction of increasing light intensity, it pulls the object towards the position of the high ...
Subwavelength imaging in photonic crystals * Chiyan Luo,
Subwavelength imaging in photonic crystals * Chiyan Luo,

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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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