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Photonics Spectra - April 1997
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Issue Library
Features
Adaptive Optics Aim for Earthly Applications
Large Earth-based telescopes use adaptive optics to measure and compensate for rapidly fluctuating wavefront distortions that blur the images of objects viewed through the turbulent atmosphere. Compensation for turbulence is important in many other fields, including communications, biomedicine and laser welding. Atmospheric distortions affect ground-based, free-space laser communications. The...
Fiber Optic Gyros Put a New Spin on Navigation
Aircraft, spacecraft and ships have long benefitted from using gyroscopes to help them navigate, and recently advances in photonic gyroscopes have brought this technology into the mainstream. These...
Laser Radar Watches the Friendly Skies
Rain, fog, high winds and snow are notorious for ruining air travel schedules. Not only do these conditions inhibit the smooth (and tightly scheduled) flow of aircraft, but they add to the air...
Stereo Displays Add A New Dimension to Work
If commercially available stereoscopic displays could work without special glasses and be viewed from virtually any angle, by any number of people at once, we would probably view all...
Photonics in Transportation
Since the 1980s, the world’s burgeoning population has forced many governments to realize that they must build more efficient transportation systems or fail to meet the needs of a modern citizenry....
Tech Pulse
Aluminum-Free Diodes Offer Doubled Power Potential
Researchers at the University of Wisconsin-Madison and Coherent Inc. have produced diode lasers with aluminum-free active areas, which they expect will operate more reliably than AlGaAs-active diodes...
Photonics Eyed To Cut Light Bills
OAK RIDGE, Tenn. -- Using collectors to gather sunlight and optical waveguides to transport the light, researchers at the US Department of Energy's Oak Ridge National Laboratory have put together the...
'Bug Eyes' Offer Potential for Collision Warning
ADELAIDE, Australia -- Austrailian researchers at the Centre for High Performance Integrated Technologies and Systems at the University of Adelaide have developed a decision-making optical sensor on...
Cameras, Infrared Sensors Nab California Toll Cheaters
Four of the 12 tollbooths on the Interstate 80 Carquinez Bridge in Northern California are using photonics technology to catch drivers who do not pay the toll. Caltrans is testing a new automatic...
Design Breakthrough Improves Lossy Confocal Microscopes
OXFORD, UK -- Engineers at the University of Oxford have discovered a way to get up to 50 times the light efficiency from confocal microscope systems that currently employ a component called a Nipkow...
High-Power Quantum Cascade Laser Works, Chilled, in the IR
Researchers at the University of Houston's Space Vacuum Epitaxy Center and Sandia National Laboratories have developed high-power infrared semiconductor lasers that combine standard diode laser and...
Infrared Device Measures Wave Temperatures, Dude
SAN DIEGO -- If surfers here want a sure-fire way to find the "hottest" waves, they might do well to adopt a technique from the University of Washington's Applied Physics Laboratory in Seattle....
Intensified CCDs Detect Single-Photon Emission
TRENTON, N.J. -- The new generation of high-resolution, back-illuminated intensified charge-coupled device (CCD) cameras will allow scientists to directly study the processes that regulate individual...
Israeli Conference Marks Industry's Anniversary
JERUSALEM -- A glimpse into the future by the laser's discoverer and a retrospective on the development of holography highlighted the 10th Meeting on Optical Engineering held last month at...
Laser Microscopy Technique Reduces Sample Damage
SAN JOSE, Calif. -- Breakthroughs in a relatively new laser-based microscopy technique have produced high-resolution images of living specimens with relatively little photodamage. The less harmful...
Measurement System Ensures that Black Is Black on Displays
Conventional techniques of assessing contrast in displays fall short and often vary depending on reflections that caused "veiling glare" in the measurement device's optical system. Researchers at the...
Near-Field Scanning Optical Microscopy Measures Diode Beam Properties
Astigmatism is a problem for laser diodes, and even after applying correctional optics, residual astigmatism (a few microns) remains because of laser-to-laser variations. In addition, temperature and...
Optical Sensor Keeps Tabs on Rocket Fuel
MARLY-LE ROI, France -- Bigger is not always better -- especially when you are building rockets. A new optic sensor under development in France could provide flight engineers with the first pressure...
Side-Pumping Diodes Mean More Power for Materials Processing
SUNNYVALE, Calif. -- A novel technology in which a side-pumped laser diode drives a solid-state laser source could mean more power and greater precision for materials processing applications, say the...
light speed
Arctic Communities Get Wired, Thanks to Friends in Warm Places
SALUIT, Quebec -- Residents of the northernmost Quebec province of Nunavik, about 1000 miles from Montreal, now have their own entrance ramp onto the information superhighway, thanks to the efforts...
Corning Reaches Optical Fiber Sales Milestone
More than 1 million km of Corning Incorporated's SMF-LS optical fiber have been sold since the product was introduced in 1994. This nonzero dispersion-shifted fiber is making its mark as...
Israeli Defense-System Manufacturer Reorganizes for Geographic Focus
Israeli high-tech defense system manufacturer Elecro-Optics Industries Ltd. has undergone a structural reorganization, dividing the company into geographic market areas. The Israel, Asia-Pacific,...
EG&G Consolidates Its Operations, Offers More Customer Flexibility
The Canada, Electro-Optics, Judson, Power Systems and Reticon divisions of EG&G Inc. have been consolidated into one division, dubbed EG&G Optoelectronics. Paul Beech, Werner Rech and Andre...
French, UK Labs Create Partnership
PARIS -- A 20-year scientific association has been formalized in the creation of the Laboratoire Europeén Associé, a joint European laboratory for high-power laser science. Founders are...
Galileo Loses $20.4 Million Account for Photocopier Component
Galileo Corp. of Sturbridge, Mass., has received written notification that Xerox Corp. has developed internal production capabilities for dicorotron assemblies, electronic components used in...
Judge Issues Injunction Against DOE's National Ignition Facility
WASHINGTON -- In December 1996, Thomas Cochran, director for the Natural Resources Defense Council, smelled something foul about the National Academy of Sciences' technical review of the proposed...
Nippon Electric Awards Solar Contract
CHATSWORTH, Calif. -- Japan's Nippon Electric Co. has awarded the contract for Solar Array Drive Assemblies and the associated electronics for its Optical Interorbit Communications Engineering Test...
Outdoor Laser Safety Is in the Hands of the FAA
WASHINGTON -- Laser safety issues are again on the bargaining table. This time, the Federal Aviation Administration (FAA) is facing the National Transportation Safety Board (NTSB), and the impetus is...
UK Photonics Exhibition Continues to Grow
BIRMINGHAM, UK -- The fourth Image Processing & Optic Technology exhibition in February introduced more than 2000 people to the latest photonics technology from more than 100 companies. The...
Accent on Applications
Binocular System Improves Target Tracking
Initial target acquisition presents problems for operators of portable video trackers. With a portable tracker, the operator cannot sit on the mount, but typically acquires the target with a...
Fast, High-Resolution Cameras Image the Sun's Surface
To the average person, the sun is a celestial body around which the Earth and other planets revolve. It's a source of warmth and light. Many don't realize that the sun is a star, and an interesting...
Infrared Imager Helps Evaluate Papermaking Process
The papermaking industry is among the highest consumers of energy in the US, and researchers at the Institute of Paper Science and Technology (IPST) in Atlanta are working to make the process more...
Solar-Powered Camera Focuses on Eagles
Northeast Utilities and the Massachusetts Div. of Fisheries and Wildlife have been working together since 1989 to protect and nurture a nest of bald eagles at Barton Cove, in Gill, Mass., one of only...
Presstime Bulletin
Melles Griot Agrees To Acquire Omnichrome
After a month of rumor and speculation that began at the Photonics West exhibition, Melles Griot Inc. announced that it will acquire Omnichrome Corp. According to Melles Griot CEO David Hardwick, Omnichrome will move from its Chino, Calif., location to Melles Griots' Carlsbad, Calif., site over the next few months. Personnel changes are not expected other than those related to the change in...
CLEO/QELS Papers To Highlight New Technologies
Organizers of this year's Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEOQELS) say they have received 1490 submissions for technical papers, 14 percent...
Researchers Use Lasers To Make Photonic Bandgap Structures
Photonic bandgaps are three-dimensional structures that can reflect electromagnetic radiation in a band of frequencies propagating in any direction. Scientists from the Max Planck Institute for...
Team Begins Building Megawatt Airborne Laser
The US Air Force has granted approval for construction of the first laser hardware for the $1.1 billion military Airborne Laser system. Boeing, TRW and Lockheed Martin are building the 747-based...
Veeco Is Poised To Purchase WYKO
Veeco Instruments Inc. of Plainview, N.Y., has signed a letter of intent to purchase Tucson, Ariz.-based WYKO Corp., currently a privately owned company, for 3 million shares of stock. Veeco...
Products
IR TEMPERATURE SENSORS
The Models 4000.4GL and 4000.4GH infrared temperature transducers from Everest Interscience Inc. provide precision temperature readings from 240 to +2200 °F. Housed in rugged stainless steel cases,...
Everest Interscience Inc.
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PHOTOREFLECTOR
Hamamatsu Corp. designed its Model P6448 light modulation photoreflector for close-proximity optical-switching applications. The unit integrates a light modulation photodiode integrated circuit with...
Hamamatsu Corporation
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ALIGNMENT CHIPS
Fiberguide Industries Inc. has developed precision V-groove silicon chips for accurately aligning optical fibers to optoelectronic devices such as lasers and photodiode arrays. The V-grooves on the...
Molex, Fiberguide
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INTENSIFIED CCD CAMERA SYSTEM
The Intensified PentaMAX-512EFT from Princeton Instruments is an integrated ICCD system that fiber couples a high-speed scientific-grade CCD to an 18-mm Gen II or Gen IV image intensifier. The...
Teledyne Princeton Instruments
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MONOCHROME MINICAMERA
Toshiba America Information Systems Inc. has optimized its new black-and-white microminiature video camera for precision applications such as robotics, machine vision and pipe inspection. The...
CANON MEDICAL COMPONENTS U.S.A., Video Sensing Devices
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NEAR-IR IMAGING
The MicronViewer 7290A from Electrophysics Corp. has been updated to include features such as calibrated three-position gain adjustment and internal shading correction. The video camera has also been...
Lynred USA
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REAL-TIME VIDEO
Colorado Video Inc. has introduced its Model 650 Video Inverter, which allows users to view real-time negative video images. The device inverts the picture portion of a video signal without affecting...
Colorado Video Inc.
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IMAGING SOFTWARE
EPIX Inc. has introduced software support for the PIXCI image capture board and for the 4MEG VIDEO series of image capture hardware. Making these devices accessible under Windows NT V4.0, the new...
EPIX Inc.
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COMPACT THERMOMETERS
Selco Products Co. has added the MT100 Series to its line of microprocessor-based thermometers. These highly accurate, compact, battery-operated devices are housed in an aluminum case and feature...
Selco Products Co.
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SEMICONDUCTOR EPOXIES
Epoxy Technology has expanded its capabilities for formulating and manufacturing sophisticated adhesives and coatings for semiconductor packaging. The company's technical experts guide the user...
Epoxy Technology Inc., Electronics Div.
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IN-LINE POWER MONITOR
The Model 320 power monitor from EigenLight Corp. features a power range from 240 to +30 dBm, insertion loss <0.25 dB, analog output and operation from 1310 to 1550 nm. The in-line device provides...
EigenLight Corp. (See NeoPhotonics Corp.)
INTERNET TOOL KITS
Two tool kits add Internet capabilities to National Instruments' LabVIEW, BridgeVIEW and LabWindows/CVI software development environments. The Internet Developers Toolkits allow users to display...
National Instruments Corp.
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UV-CURABLE ADHESIVE
Epoxies Etc. offers the UV 60-7016, a high-performance, UV-curable adhesive, sealant and potting compound. It was designed specifically to bond glass to metal, and it is suitable as an adhesive for...
Epoxies, Etc.
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AIR-COOLED EXCIMER LASER
ATL Lasertechnik GmbH announced its new compact air-cooled excimer laser systems, which operate at 193, 248 and 308 nm and utilize total-metal-ceramic technology. The ATLEX SPi lasers have a pulse...
ATL Lasertechnik GmbH
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2-W GREEN LASER
A 2-W version of the Verdi continuous wave green laser has been released by Coherent Laser Group. Operating at 532 nm, this compact, diode-pumped Nd:YVO4 laser has a single-frequency output with low...
Coherent Inc.
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LASER RANGEFINDER
Riegl USA is offering the LD 90-3-GF series of pulsed laser rangefinders for low-level altimetry applications. Providing fast and accurate ground-to-aircraft distance measurements, these devices can...
Riegl USA Inc.
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LASER REFLECTORS
Hard metal mirror reflectors for 10.6-µm laser applications are available from Laser Research Optics. For use in physically demanding industrial and medical environments where frequent cleaning...
Laser Research Optics
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VARIABLE-FLASH STROBE
Providing variable flash count, intensity, duration and period, the HyperFlash from Wintriss Engineering Corp. was designed for applications requiring flexible, dynamic lighting. It illuminates...
Wintriss Engineering Corp.
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UV INSPECTION LAMP
The handheld BIB-150P ultraviolet inspection lamp from Spectronics Corp. has been updated to include a housing made of impact-resistant engineering polymer. The contoured handle is ergonomically...
Spectronics Corp., Spectroline
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OPTICS ACCESSORIES
Kinetic Systems Inc. has introduced a line of burr-free microholes and holders for use with optical systems. The PA Series pinhole apertures offer 1 to 1000-µm-diameter pinholes, and the HPPA...
Kinetic Systems Inc.
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OPTICS POLISHING
The optics polishing system from Meller Optics Inc. includes ready-to-use Gugolz optical lapping pitch, alumina abrasive powders and alumina suspensions. The pitch is available in five premixed...
Meller Optics Inc.
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MICROPOSITIONER
Charles Supper Co. Inc. has introduced a compact micropositioner that combines two arcs and an X-Y slide assembly for aligning lasers, fiber optics, laboratory and x-ray crystallography instruments....
Charles Supper Co. Inc.
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SPECTRUM ANALYZER
EXFO E.O. Engineering Inc. has introduced the IQ-5200 Optical Spectrum Analyzer series. Designed for wavelength division multiplexing system design, qualification and monitoring, these devices can...
EXFO Inc.
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OPTICAL METROLOGY TOOL
WaveFront Sciences Inc. has introduced the Complete Light Analysis System - 2D, which provides quantitative measurements of both the intensity and phase of any optical source. This...
AMO WaveFront Sciences LLC
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