Welcome To The Holographer holograms can now be produced successfully using laser pointers and this has to teach the physics behind light and optics while adhering to the National http://www.holographer.org/articles/hg00003/hg00003.html
Extractions: Pearl John mail@pearljohn.co.uk About the author http://www.pearljohn.co.uk http://www.bowieart.com Download PDF There is currently an international shortage in both skilled photonics workers and students taking science subjects. However, there are a number of initiatives aimed at addressing these shortages. The Columbia Career Center high school SPIE chapter in Missouri, USA, has recently created an educational CD-ROM to teach holography to students, to interest them in following career paths in optics and photonics. . These include problem solving, teamwork, safety, communication, research, mathematics, analysis of data, documentation, equipment handling, and knowledge of light theory, which involves the principals of reflection, refraction, diffraction, interference and polarization. All of these skills are essential to the photonics industry and, as a result, holography is considered by the Center for Occupational Research and Development (CORD) to be a national photonics skill standard for LEOTs. http://www.holoworld.com/holo/diode.html
Fun With Holograms The photonics Centre has taken the lead in the development of holograms in SIngapore . Any stray light entering the area/room will ruin your hologram. http://www.np.edu.sg/~sat/Schprj/Holography/holography.html
Extractions: FUN WITH HOLOGRAMS Click to return to Main Menu for School Outreach Programmes T he Photonics Centre has taken the lead in the development of holograms in SIngapore. This exciting project allows students to explore their creative skills and at the same time understand the concept of interference of light. Some of the schools in Singapore that have been involved in the development of holograms at the Photonics Centre are: Raffles Institution Raffles Girls Secondary School The Chinese High School Sembawang Secondary School Bowen Secondary School Students from RGSS making transmission holograms. Students from RI examining a transmission hologram. CHECK IT OUT! A SLIDE SHOW ON HOW TO MAKE REFLECTION HOLOGRAMS! Two students from Raffles Girls Secondary School will give you a guided tour on how they make reflection holograms. Download, unzip and run file. Click on the photos to move to the next slide. There are 13 slides in all and the folder size is 1.8Mb. Click on picture below to download file now!
Photonics Faculty of Physical Sciences Department of physics Research photonics the light regions to the dark regions of the hologram interference pattern. http://www.imperial.ac.uk/research/photonics/research/topics/biomedical_imaging/
Extractions: Quick Navigation Imperial home page A-Z of Departments Courses Research Alumni Faculty of Engineering Faculty of Life Sciences Faculty of Medicine Faculty of Physical Sciences Humanities Tanaka Business School The Graduate Schools: - Engineering and Physical Sciences - Life Sciences and Medicine Spectrum (College Intranet) College directory Help Note: Your browser does not support javascript or you have javascript turned off. Although this will not affect your accessibility to the content of this site, some of the advanced navigation features may not be available to you. Home Research Research Topics Depth-Resolved Imaging Using Photorefractive Holography Note: Some of the graphical elements of this site are only visible to browsers that support accepted web standards . The content of this site is, however, accessible to any browser or Internet device. An example of depth-resolved photorefractive holography We have demonstrated depth-resolved holography to be a valuable method of real-time high resolution 3-D imaging, applicable through turbid media, which provides rapid whole-field acquisition and high depth and transverse spatial resolution images. This technique has applications in 3-D profiling, biomedical imaging through tissue and imaging through the atmosphere and sea water. Figure 1 Schematic of photorefractive holography
Imperial College London Faculty of Physical Sciences Department of physics Research photonics Simulation of light propagation through diffractive optical elements for http://www.imperial.ac.uk/research/photonics/pt_group/peter_torok_research_jobs_
Extractions: Quick Navigation Imperial home page A-Z of Departments Courses Research Alumni Faculty of Engineering Faculty of Life Sciences Faculty of Medicine Faculty of Physical Sciences Humanities Tanaka Business School The Graduate Schools: - Engineering and Physical Sciences - Life Sciences and Medicine Spectrum (College Intranet) College directory Help Note: Your browser does not support javascript or you have javascript turned off. Although this will not affect your accessibility to the content of this site, some of the advanced navigation features may not be available to you. Note: Some of the graphical elements of this site are only visible to browsers that support accepted web standards . The content of this site is, however, accessible to any browser or Internet device. Simulation of light propagation through diffractive optical elements for optical data storage Diffractive optical elements (DOE) are routinely used in optics to generate complex light distributions. These devices come in two broad categories: static and dynamically reconfigurable. The latter type of DOEs are usually liquid crystal devices consisting of as many as 512x512 individual pixels, each having a lateral dimension of 10-20mm. These devices are frequently used in computer generated holography or three-dimensional display applications, just to mention a few exciting applications. Our research group at Imperial College London has been developing novel applications of dynamically reconfigurable DOEs to optical data storage and photonic crystals. We use DOEs to generate three-dimensional light distributions which may be applied in conjunction with nonlinear materials to induce a three-dimensional refractive index distribution in bulk. The overall effect of this is a volume hologram which is then used to either store high density information or to affect the propagation of light of different wavelength thereby creating a three-dimensional photonic crystal.
...Looking Back: 20 Years Ago In The Photonics Industry A new technique for transmitting holograms under water, around corners and eventhrough From the April 1995 photonics Spectra NIST s physics Laboratory http://www.photonics.com/todaysheadlines/lookingback.asp
Extractions: Twenty-one years after "picture phones" were introduced at the New York World's Fair, and despite the then-"widespread belief that teleconferencing was a technology in search of a market," Image Data Corp. of San Antonio, Texas, developed the Photophone, a freeze-frame picture phone that used frame-grabbing technology and a compression algorithm to chop bits per pixel from 7 to 3.5, "producing a desktop unit that can sell for under $9000," the Spectra reported. Resembling a personal computer with a camera attached, Photophone's most attractive features, said its makers, was its ability to connect to standard phone lines and the simplicity of its user interface. During a scare over tainted Austrian wines, the US Bureau of Alcohol, Tobacco and Firearms used mass spectrometry to test them for the presence of diethylene glycol a component of antifreeze that can poison some who drink it.The bureau's lab in Rockville, Md., used a gas chromatograph test then mass spectrometry to test samples of wines sent to the lab by customers, importers and wholesalers. Out of hundreds that were tested, approximately two dozen brands were found to be contaminated.
Photonics.com -- CLEO/QELS 2002, Long Beach, CA Philip Russell, Photonic crystal fibers A holey renaissance light is Russell is a professor in the Department of physics at the University of Bath http://www.photonics.com/tradeshows/cleo2002/XQ/ASP/QX/
Extractions: Researcher Kung Bin Sung and his colleagues presented their fiber optic confocal microscope at CLEO/QELS 2002. The microscope allows them to image cell nuclei in epithelial tissue, paving the way for detection of precancerous cells. The researchers say their optical imaging technique should provide a tool to noninvasively screen larger areas of suspicious tissue in real time. They are planning a clinical study with the goal of creating a cost-effective instrument for use in clinics. Calcium May be Key to Better Clocks Atomic clocks keep accurate time by locking themselves to the extremely precise frequencies of the electromagnetic radiation absorbed or released by an atom making a transition from one energy level to another. Next-generation atomic clocks, which lock to frequencies in the visible light range, are showing that they can surpass traditional atomic clock designs based on microwave frequencies.
West Mesa High School : Technology Academies Science, Biology I, Chemistry, physics I, Elective. photonics, Metallurgy,PreEng Electron Show-and-tell, demonstration of a variety of holograms http://www.aps.edu/aps/wmhs/atca/acad_photo_com.html
Extractions: Digital Circuits [ELEC 105A] Courses taken at high school that earn students credit at TVI when they follow up with the advanced level of this course work Photonics Academy Curriculum (High School Foundation) Subject English English 9 English 10 English 11 English 12 Social Studies Health/Study Skills Comm Skills U.S. History World History Math Algebra I Geometry Algebra II Math Analysis Science Biology I Chemistry Physics I Elective Photonics Metallurgy Pre-Eng Electron Intro to Photonics Digital Circuits Electives Computer Apps P.E.
Photonic Crystals In 3-D The Physics Congress 2003 The Institute of physics, 24.03.2003. Photonic Crystals in 3D The said holograms are usually made by making two beams of light interfere with each http://www.innovations-report.de/html/berichte/informationstechnologie/bericht-1
Extractions: Telecoms systems contain an awkward mixture of optics and electronics. A purely optical system would permit the very high data rates needed by the Internet, but at the moment the switching and routing, as well as the last mile to the customer, still depend on slower electronic components. Speaking at the Institute of Physics Congress on Monday 24 March, Professor Robert Denning from Oxford University will explain how his novel holographic approach to making 3-dimensional photonics crystals could allow optical components to be built that remove this bottleneck. Professor Denning said: By analogy with electronics the complex optical systems required are called photonics, because they use photons in place of electrons but, because it is much harder to control the flow of light than an electrical current, their development has been slow. The outlook has recently been transformed by the invention of a new type of device, the photonic crystal. This acts like an optical insulator, and allows the components that handle optical data to be reduced to microscopic sizes. They can then be densely packaged like electronic circuits in a silicon chip. Unfortunately, the methods used for making electronic chips are not well suited to these new devices. Current manufacturing techniques can only create devices featuring 2-dimensional photonic crystals. However Professors Denning and Professor Turberfield, from the Chemistry and Physics Departments in Oxford, have now found a simple way of using a laser to make the perfectly regular microscopic patterns that are required for 3-dimensional photonic crystals. Their method creates a promising route towards the photonic systems of the future.
Oe Magazine - SPIE World bring free photonics education to students and kindle an interest in physics See the SPIE paper PDF Making holograms an education CDROM, which http://oemagazine.com/fromTheMagazine/sep04/spieworld_edbeat.html
Extractions: Industry View ... SPIE Membership EDUCATION BEAT BY ERIN M. SCHADT In a world where seeing is believing, Pearl John and the Light Express Roadshow are making sure young men and women across the southern United Kingdom are getting an eyeful. Using energetic, entertaining displays of laser light, the roadshow aims to bring free photonics education to students and kindle an interest in physics and photonics. "We try to make the whole presentation have the highest visual impact, as well as demonstrate a lot of the properties of light, lasers, and fibers that the students may have heard about but are relatively unlikely to have seen, and definitely not on this scale," says Keith Wilcox, the laserist of the roadshow.
Extractions: Date: June 27, 2005 Quasicrystals have a higher degree of rotational and point-reflection symmetry than conventional crystals. As a result, quasicrystalline heterostructures fabricated from dielectric materials with micrometer-scale features exhibit interesting and useful optical properties including large photonic bandgaps in two-dimensional systems. We demonstrate the holographic assembly of two-dimensional and three-dimensional dielectric quasicrystalline heterostructures, including structures with specifically engineered defects. The highly uniform quasiperiodic arrays of optical traps used in this process also provide model aperiodic potential energy landscapes for fundamental studies of transport and phase transitions in soft condensed matter systems. Figure 1: Two-dimensional colloidal quasicrystals organized with holographic optical traps. (a) 5-fold. (b) 7-fold. (c) 8-fold. (d) An octagonal quasicrystal with an embedded structured defect. The scale bar in (a) indicates 5
DTI Photonics: Photonics In Action Mesophotonics, which is commercialising the technology of photonic crystals, hadpulled off the deal while many young technology holograms light up http://www.photonics.org.uk/newsletter/archive3/business.php
Extractions: Home Feedback Archive Publications Quick links Photonics in action Feature articles News and events UK activities Noticeboard issue 03 the newsletter for the photonics community Register to receive your own copy of the printed newsletter and to sign up for news of website updates. Photonics in action Mesophotonics develops new generation of optical chips CRLO Displays benefits from $19m of new funding Bookham breaks into industrial lasers market Smart Holograms engineers new holograms technology News and events Technology Strategy Board Centre for Integrated Photonics
DTI Photonics: Feature Articles light proves to be an effective tool for measuring the speed of aircraft The team at the University of Hull is providing input on laser physics, http://www.photonics.org.uk/newsletter/archive3/featureArticle.php
Extractions: Home Feedback Archive Publications Quick links Photonics in action Feature articles News and events UK activities Noticeboard issue 03 the newsletter for the photonics community Register to receive your own copy of the printed newsletter and to sign up for news of website updates. Feature articles LASSI lasers measure the activities and events Photonics in action Mesophotonics develops new generation of optical chips CRLO Displays benefits from $19m of new funding Bookham breaks into industrial lasers market Smart Holograms engineers new holograms technology UK activities Photonex 04 event held at Stoneleigh Park, Coventry
Extractions: Too many textbooks and courses on optics are based on an old-fashioned treatment of light and its applications. Unfortunately for them, the field of "light science" has developed so rapidly during the past fourty years or so that anything but an entirely up-to-date teaching is inadequate. Although we still do not know what light really is, we have found new ways of exploiting both the particle and wave character of light. Unlike most material systems, the wave character of light is so strong that is can survive also at room-temperature. After all, this is why we do not have to put our CD-player (containing a laser) into liquid Helium to make it work. Without doubt, photonics will be of major importance in the future. Already, information technology relies heavily on photonics for transmission (optical fiber) and storage (CD, DVD). The next generation TV-sets uses dynamic photonics in the form of liquid crystals (LCD) that control the light so that sharp images are formed by large, but flat and lightweight, screens. As a matter of fact, light plays a key role also in the fabrication of these LCD screens: the complex electrical circuit pattern that covers the entire screen is "written" with extremely tightly focused ultra-violet laser radiation. But indeed, the list of areas where photonics is rapidly becoming an indispensable tool can be made much longer: measurement technology, medical and chemical analysis, and laser machining to mention a few.
Photonic Devices Inside a photonic crystal transmission or rejection of light in a given This sensitivity will be used to .develop. the holograms application of the http://wwwnew.towson.edu/physics/REU/photonic.htm
Extractions: Student Housing Research Area Novel Photonic Materials Based on Charge . Ordered Manganese Oxides Advisor: Dr. Vera Smolyaninova After successful development of 1D photonic structures, this work can be extended to 2D photonic structures using NSOM. The reflectivity, local magnetic structure and conductivity of these structures will be tested using various scanning techniques (NSOM, MFM, and STM). In addition, prototype switchable photonic crystal devices will be created and tested. Back to main page Metal Oxide Thin Films Photonic Materials Nanotechnology ... Dr. David Larkin (COPI) Dr. Steven Lev
Quebec Photonic Network QPN Events, Information, Networking photonics What Is photonics? light is the only physical phenomenon that makesit possible to tell (33) credit card holograms to prevent counterfeiting http://www.photoniquemontreal.ca/photonicswhatis.ch2
Extractions: Photonics: What Is Photonics? "Light is the only physical phenomenon that makes it possible to tell the entire history of physics, and if you look at the history of sciences, light was the focus of the greatest controversies." Light, wave or particle? Shedding light on the photon, a brief historical look at its ontology and the lights photonic technologies. Optics, long viewed exclusively as the set of phenomena perceived by the eye, have undergone major upheavals in the wake of basic discoveries made throughout the 20th century, such as the photon, lasers, fibre optics. In the process, it has become a scientific and applications sector which, along with other fields like mechanics, electronics, information technology and photonics, leads to major advances in terms of economic performance and costs. In fact, modern optical instrumentation technologies and the considerable research currently being conducted in this field seek to replace electronic components with optical components, offering a wide range of revolutionary possibilities. These could lead to much larger memories and a significant increase in data processing speed. A case in point: recent applications of the effects of magneto-optics, which had long been known.
Extractions: The survey takes less than two minutes, there's nothing to identify you personally, and you won't receive any email or other sales pitches by participating. December 28, 2004 Nic Lawrence, Edward Buckley, Adrian Cable and Peter Mash, researchers within the Photonics and Sensors Group at the University of Cambridge, Department of Engineering are developing ground-breaking holographic technology, which will power a new generation of pocket-sized digital video projectors.
Drew Physics Department Laser Laboratory- Photonics The Drew physics Department photonics Laboratory. Undergraduate Research in Lasers, photonics is the study of light and its interaction with matter. http://www.users.drew.edu/~dmcgee/Drew_Physics_Laser_Laboratory_Photonics.html
Extractions: Dr. David J. McGee- faculty advisor My research focuses on photonics, with emphasis on lasers, holography, and photorefractive nonlinear optics. Photonics is the study of light and its interaction with matter. The applications of photonics such as fiber optic networks and CDs are transforming the technological landscape in ways similar to the electronic revolution of the past fifty years. At Drew, I run the photonics laboratory and provide many opportunities for students to work in the lab, including multidisciplinary projects with chemistry and computer science. Student projects span the range from Independent Study courses, Honors theses, paid summer internships with the Drew Summer Science Institute, and paid summer research assistantships through external grants. Recent projects involved the fabrication of organic films for 3-D holography and the application of these films in holographic data storage devices. There is also continuing development of innovative instructional laboratory experiments in nonlinear optics, laser spectroscopy, and image processing as part of the junior-senior Advanced Lab course for physics majors/minors. I encourage students to experience work in the photonics lab every chance they get- it provides exposure to the technologies not covered in courses, but which employers and graduate schools are seeking.
Optics Courses At CU of Optics Lasers (Laser physics); PHYS 7550 Fundamentals of light Matter ECEN 5016 Fundamentals of photonics Fall 2001 This introductory courses http://drip.colorado.edu/~kelvin/courses.html
Career Center Secondary Education This lightbased technology, called photonics, studies the physical control of study of the physics of photonics and the optics which control light. http://www.career-center.org/secondary/trade/trade-lasers.htm
The Educational Encyclopedia, Physics, Lasers How a lasers works the word laser stands for light amplification by stimulated Laser pointer holography creating holograms using laser pointers http://users.pandora.be/educypedia/education/lasers.htm
Extractions: Physics Batteries Electricity Electrostatics Energy ... General overview Lasers Optics Optics: color Magnetism Mechanics ... Waves Lasers see also Electronics: lasers Absorption and emission of light by atoms Absorption and emission of light pdf file Absorption and emission processes pdf file Argon laser systems Atomic laser Carbon dioxide lasers CO2 Laser pdf file Confocal microscopy Diode lasers pdf file Dye lasers dye lasers Energy transfer and modeling Gamma ray laser Helium-Neon lasers Helium-Neon lasers pdf file How a lasers works the word "laser" stands for "light amplification by stimulated emission of radiation." Lasers are possible because of the way light interacts with electrons How lasers work Imaging laser-cooled gallium and dye laser frequency stabilization Introduction to lasers ordinary natural and artificial light is released by energy changes on the atomic and molecular level that occur without any outside intervention. A second type of light exists, however, and occurs when an atom or molecule retains its excess energy until stimulated to emit the energy in the form of light Introduction to laser theory ppt file Laser adventure laser radiation, lasing processes, laser system, laser cavity, laser gain curve, laser types, radiation properties
