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Photonics Spectra - March 1998
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Issue Library
Features
Exploring the New Communications Network
Communications networks have a ravenous appetite for capacity, flexibility and reliability. For optical networks operating at data rates of up to 10 Gb/s, a full plate of components is needed for...
Photonic Techniques Pay Big Dividends in Process Control
In industrial processing it pays to know how much of what is in the mix, which is why on-line sampling of both the amount and type of chemical constituents is critical. Only in this way can an...
How Small is Small?
Making a baseball is less an engineering feat than an art, in which neat hand-stitched seams act as paint against the cowhide that measures 9 to 9_ in. in circumfrence, according to the official...
Aspheres Stand Up to the Test
As optical designers tackle the challenge of improving system performance while at the same time reducing overall package size, aspheric optics undoubtedly will grow in significance. Unfortunately,...
Micromachining:
The miniaturization of mechanical and electronic components is revolutionizing modern biomedical, aerospace and industrial products. Laser micromachining is emerging as a critical manufacturing...
Are We On Exactly The Same Wavelength?
If you have been using lasers for more than a few years, you can recall the days when the wavelength specified on a commercial diode laser was a rough estimate rather than a precise figure. As...
Tech Pulse
Federal Agencies Join in Air Safety Program
Despite the best efforts of air traffic controllers, pilots sometimes have to rely on old-fashioned visual sightings to avoid collisions. Although red or white anticollision lights on planes provide...
Scientists Bubble with Excitement
If you've ever looked deep into a glass of champagne or beer you've probably noticed the strings of bubbles floating around in the liquid and have swallowed them without any great harm. But would you...
Cantilever Thermal Detector to Challenge Microbolometer
Researchers at Oak Ridge National Laboratory have developed an uncooled thermal infrared detector that they hope will cut the costs of IR cameras by one-third. Researchers Panos Datskos and Slobodan...
External Cavity Amplifier Targets Printing, Imaging and Telecom
Targeting low coherence optical coherence tomography, large-scale printing and telecom applications, researchers at the University of Central Florida's Center for Research and Education in Optics and...
Researchers Work on Laser-Cooled Atomic Clock
A team of researchers at the National Institute of Standards and Technology is set to begin work on an advanced laser-cooled cesium atomic clock slated to go aboard the international space station....
Coast Guard Brings New Life to Lighthouse
The US Coast Guard has agreed to restore the original lens in a historic Florida lighthouse. The diamondlike lens is one of only eight clamshell-design Fresnel lenses still operating in the US. The...
Infrared Sensor Works Better than Coffee
A helmet-mounted infrared sensor promises to reduce heavy-truck accidents caused by sleepy drivers. According to South Africa's Council for Scientific and Industrial Research, mining companies suffer...
Spectroscopy Identifies Tooth Decay
Researchers from two German institutions have used near-infrared Raman spectroscopy to identify tooth decay in a variety of stages, and in tooth-colored fillings. Traditionally, dentists have...
Process Makes Single-Crystal Diamond a Reality
LMA Inc. has developed a process that grows single-crystal diamond that has performed significantly better than conventional polycrystalline diamond in tests, enabling a host of photonic applications...
Optical Detector Measures Volatility of Coal Dust
Mine operators have long had to keep a close eye on the buildup of coal dust in underground mines. Too much of the combustible dust could lead to an explosion. A group of researchers from the...
Three-Laser Method Goes Beyond Diamond Films
Three years after unveiling an advanced method for depositing diamond thin coats, QQC Inc. has disclosed that it used the same three overlapping pulsed lasers to improve the surface of metals,...
Researchers Inch Closer to X-Ray Wavelengths
Scientists have long sought to explore the structure of matter at the atomic and molecular level. To achieve this, they have been working toward developing a self-amplified spontaneous emission x-ray...
Integrated Photodetector Improves Wireless Communications
Wireless communications of the future may offer better performance, thanks to a photodetector developed by the University of California's Integrated Photonics Laboratory. The velocity-matched...
Micromachine Aligns Optical Fiber
Aligning optical fibers in manufacturing production lines may soon become easier, thanks to an active fiber optic microaligner developed by The Boeing Co. in St. Louis. The prototype device is 4 mm...
Adaptive Optics System Enhances 3.5-m Telescope
The Max Planck Institute for Astronomy in Heidelberg, Germany, and Adaptive Optics Associates in Cambridge, Mass., have installed an adaptive optics system on the joint German and Spanish 3.5-m...
Scanning Probe Microscope Looks at Liquids' Surfaces
Researchers at the Lawrence Berkeley National Laboratory have developed a scanning probe microscope that can show the surfaces of liquids with horizontal resolutions of about 100 Å and vertical...
Spectroscopy Advance Targets Industrial Applications
Industry has been slow to accept laser-induced breakdown spectroscopy for chemical analysis because of the technology's inherent signal instability and because it measures relative, rather than...
Terabit Networks Become Reality
A flexible, high-power, erbium-doped fiber amplifier technology, optimized planar waveguides and externally modulated lasers form the heart of a new optical network from Lucent Technologies that is...
Electrons 'Self-Trap' on Crystal Surfaces
For years, scientists have sought answers to questions about the microscopic properties of solid surfaces and interfaces. The end of that search may be a little closer, in light of a paper recently...
Optical Fiber Measures Turbulence
A team of physicists from the University of Pittsburgh and the University of Bordeaux, France, has demonstrated a fiber optic device that measures the two-dimensional turbulence of fluids quickly and...
Ultrafast Spectroscopy Reveals the Potential of Alkanes
Chemists have taken another step closer to understanding alkane activation reactions occurring at room temperature, thanks to an ultrafast spectroscopic technique that provides images at a rate of a...
UV Radiation Holds the Key to a New Film Curing Process
Engineers at Research Frontiers Inc. in Woodbury, N.Y., have developed a faster process for making light-controllable film by curing it with ultraviolet radiation rather than heat. The process...
light speed
Raytheon Amber Closes Facility, Merges with Hughes
Raytheon Amber, a manufacturer of infrared focal plane array technology, plans to close its facility here and consolidate operations in what was formerly the Hughes Santa Barbara Research Center. The move comes as part of a widespread restructuring announced by Raytheon Amber's parent company, Raytheon Systems Inc. While layoffs at Raytheon Amber appear likely, it remains unclear how many of the...
Environmental Group Targets Lawrence Livermore Superlaser
Lawrence Livermore National Laboratory's superlaser has once again come under fire from a coalition of environmentalists and taxpayer groups. Calling itself "Green Scissors," the group listed the...
Feds: US Enrichment Corp. May Privatize
In a move that could add $1 billion to $2 billion to US Treasury coffers, the Maryland-based US Enrichment Corp. has received federal approval to proceed with its sale to the private sector. US...
Japan Gaining on US in R&D and Technology
The National Science Foundation has released a report saying Japan has invested proportionally more in R&D than the US and holds a favorable trade balance in advanced technologies, a sector that...
Shipments of Photonic Components on the Rise
Increased demand for personal computers and the growth of the Internet are two factors accounting for worldwide shipments of photonic components that exceeded $7.1 billion in 1997, an increase of 10...
Uniphase, SDL Launch New Gratings
Two manufacturers of fiber optic technology here have unveiled grating components in an effort to gain an increasing share of the growing fiber optic market. In January, Uniphase Corp. announced the...
Sony and Fujitsu to Develop Semiconductors Jointly
Fujitsu Ltd. and Sony Corp., both of Tokyo, have teamed up to develop and produce advanced microchips to save on development costs. They plan to develop "system-on-a-chip" technology for use in...
Rofin-Sinar Announces Laser Spinoff
Rofin-Sinar Technologies Inc., a manufacturer of industrial laser products, announced that it has formed Rofin-Sinar UK Ltd. to develop and manufacture low-power CO2 lasers. The spinoff, which will...
Telecommunications Industry Association Sets Standard for Fiber Optic Ribbon
The Telecommunications Industry Association has published a new standard on fiber optic test procedures. The document provides a method of measuring residual twist in optical fiber ribbons and...
Coherent Enters Telecom Market
Coherent Inc. of Santa Clara, Calif., has formed a joint venture with Fiber Optics Network Solutions Corp. of Northboro, Mass., to develop and market a high-power broadband transmission product line...
Web Enables Painless Job Searches
Career objective: to find a high-paying, high-level engineering job at a Fortune 500 company with as little effort as possible. Some soon-to-be college graduates whose career objectives resemble the...
Accent on Applications
Photonic Technique Helps Fight the War Against Cancer
Photonic devices and techniques such as lasers and high-tech imaging have become well-known weapons in the war against cancer, heart disease and numerous other human afflictions. A team of scientists at Montreal Neurological Institute at McGill University in Quebec has developed an approach in the ongoing battle against breast cancer that involves positron emission mammography and a radioactive...
Flat Panel Arrays Aid Radiotherapy, Diagnostic Imaging
When administering radiation therapy to cancer patients, doctors must be able to monitor the amount of radiation going to the tumor as well as to the surrounding tissue. Physicians at the University...
Fiber and Laser Unite in Restoration Effort
The French, rightfully proud of their architectural heritage, spend about $8.6 million a year on high-technology restoration work, and 20 percent of that money is used to clean historic buildings...
Presstime Bulletin
Coherent Inc. Fined for Exporting Laser Parts to India
The US Commerce Department's Bureau of Export Administration has fined laser manufacturer Coherent Inc. $20,000 for illegally exporting two laser components to a company that is affiliated with India's Atomic Energy Department. The problem stemmed from an earlier sale of complete laser systems to the company, before the Com-merce Department enacted the weapons-control initiative in 1989,...
White House Unveils R&D Budget for Fiscal '99
The White House has proposed $78.2 billion in R&D funding for the 1999 fiscal year, reflecting a renewed emphasis on support for scientific and university-based research facilities. The Clinton...
Grating Allows More Channels on One Fiber
With more and more data being transmitted over commercial and domestic networks, there has been a growing demand for capacity on backbone networks. As a result, Nortel Telecom of Paignton, UK, has...
Team Makes Advances in Nitride-Based Blue Laser Diodes
Research groups have sought to fabricate nitride-based laser diodes because of their applications in optical storage systems, printing, medical surgery and chemical monitoring. Now a team of...
UN to Ban Lasers in Combat
The United Nations has solicited enough countries to sign on to an agreement banning laser weapons in battle. Hungary became the 20th country to ratify a UN accord barring lasers that cause...
Products
FIBER TERMINATION
The Molex XPress Termination kit from Molex Fiber Optics is designed to terminate horizontal fiber optic cabling in local-area network systems. The user applies an adhesive and an accelerant directly to the fiber, producing an immediate bond between the fiber and the ceramic ferrule. The adhesive requires no measuring or mixing. The kit includes 12 connectors, rubber strain-relief boots for 3-mm...
Molex, Fiber Optics
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PLASTIC FO SENSOR
Baumer Electric Ltd. is offering a plastic fiber optic sensor that can be programmed to operate as a diffuse or through-beam sensor. The teach-in mode allows the user to adjust operating parameters...
Baumer Ltd.
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OTDR MONITORING
The Anritsu Co. has added a monitoring function to its MW9070B mini-OTDR to facilitate remote monitoring of fiber optic lines. A computer equipped with the monitoring software controls the device and...
Anritsu Co.
Request info >
SOFTWARE FOR WDM DESIGN AND MODELING
The Optiwave Corp. has developed a software program that allows users to design and model phased-array WDMs. Dubbed WDM_Phasar, the package allows the designer to lay out and edit an entire WDM with...
Optiwave Systems Inc.
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4k-RESOLUTION CCD CAMERA
Alt Systems Inc.'s cooled, slow-scan CCD camera with 4k 3 4k resolution is now available from Catalina Scientific Corp. The company says the camera represents a 400% increase in resolution over the...
Catalina Scientific Instruments LLC
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BACK-THINNED CCD AREA IMAGE SENSORS
The Hamamatsu Corp.'s S7030 and S7031 series of CCD image sensors feature line-binning and area-scanning modes, leading to what the company calls unparalleled signal-to-noise ratio and signal...
Hamamatsu Corporation
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IMAGING CARDS
The PICPORT line of image acquisition cards from Leutron Vision AG was developed for the PCI bus and can be used with a range of imaging sensors. They transfer data in real time at speeds up to 132...
Leuze electronic Inc.
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IMAGING SOFTWARE
The Matrox Imaging Products Group has unveiled its ActiveMIL-Lite 1.0, a collection of ActiveX controls for building Windows-based scientific, industrial and other imaging applications with rapid...
Matrox Imaging
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MACHINE VISION SOFTWARE
The Cognex Corp. is offering PatMax software technology in its Checkpoint 900C PC plug-in machine vision systems. According to the company, this enhancement will allow users to locate and align parts...
Cognex Corp.
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GRAPHICAL USER INTERFACE
EPIX Inc. has developed a graphical user interface for its Windows-compatible imaging software. XCAPLITE for Windows 95 or NT offers enhancements including sequence capture and display, image...
EPIX Inc.
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PATTERN GENERATOR
Pulse Instruments' Orator 2000 pattern generator allows flexibility when running subpatterns. It offers multilevel looping for virtually unlimited pattern memory space and can be configured with the...
Pulse Instruments Co.
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PULSE GENERATOR
Kentech Instruments Ltd. has added the HMP2 to its line of subnanosecond kilovolt pulse generators. Each of the two ultrafast pulse outputs has an amplitude of >4 kV. The waveform is a fast rising...
Kentech Instruments Ltd.
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DISTANCE SENSOR
Martin, Froeschner & Associates is offering its digital laser distance sensor with accuracy greater than one part per million. There is no minimum range and, unlike triangulating sensors, no...
Martin, Froeschner & Associates
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HIGH-SPEED DIGITIZERS
Stanford Research Systems Inc. has developed the TD250/TD500 high-speed digitizers for time-of-flight mass spectrometry applications. Designed as a replacement for costly and bulky oscilloscopes,...
Stanford Research Systems Inc.
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OPTICAL TABLE
Technical Manufacturing Corp. is offering the Cleantop II optical top, an optical table with a spill-proof core. Individual Cleantop II cups are epoxy-bonded under each tapped hole prior to bonding....
TMC
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DIODE LASER SYSTEM
The Rocky Mountain Instrument Co. has developed the DL-F300 diode laser system for soldering, microwelding and other materials processing applications. The device features the high-speed Smart Pump...
Rocky Mountain Instrument Co. (RMI)
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LASER SAFETY SOFTWARE
LaserSafe PC, a laser safety software package from Lasermet Ltd., has been upgraded to conform to the EN 60825-1 and IEC 825-1 standards. Additional enhancements include an explicit C6 value and an...
Lasermet Ltd.
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LASER SCANNING
A pulsed laser mirror scanner designed for high-speed applications such as obstacle detection and collision avoidance, airborne laser scanning, robotic vehicle position sensing and object surface...
Riegl USA Inc.
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LASER BEAMSPLITTERS
Newport Corp. has introduced a line of beamsplitters designed to minimize pulse dispersion and maximize bandwidth for ultrafast laser applications such as beam sampling and autocorrelation...
MKS/Newport
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LASER VIBROMETER
MetroLaser Inc.'s VibroMet is a laser vibrometer system designed for noncontact, single-point vibration measurements. Based on the company's optical and electronic configuration, the compact device...
MetroLaser Inc.
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OFF-THE-SHELF OPTICS
Docter Optics GmbH is offering a high-performance line of off-the-shelf precision optical components. Among them are aspheric condenser lenses; planoconvex, biconvex and convex-concave singlet...
Docter Optics Inc.
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OPTICAL SYSTEMS
LightPath Technologies Inc. has developed a new technology that allows designers to construct optical systems comprising only GRADIUM glass components. The company says that GRADIUM glass is the only...
LightPath Technologies Inc.
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TRANSMISSION GRATINGS
Edmund Scientific Co.'s Industrial Optics Div. is offering a line of transmission gratings for laser beam division and multiple laser line separations in the visible wavelengths. Comprising an...
Edmund Optics Inc.
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SERVOMOTOR CHIPSET
Performance Motion Devices Inc.'s MC1401A v. 2.3 is the latest version of its advanced multiaxis servomotor chipset, with electronic gearing capability. The chipset is capable of controlling up to...
Performance Motion Devices Inc.
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TRANSLATION STAGES
New Focus Inc. has introduced a family of ball-bearing translation stages that feature an interlocking track design for complete modularity. These stages can be reconfigured with the twist of one...
Newport - New Focus
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ENDOSCOPE COMPONENTS
Fujikura Europe Ltd. is offering custom endoscopes and viewing systems for use in harsh environments, such as those with high radiation, extreme temperatures, aggressive fluids and toxic atmospheres....
Fujikura Europe Ltd.
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IR IMAGING SPECTROMETER
McPherson Inc. has introduced an integrated spectrometer system with InGaAs linear array detectors from 700 to 1700 nm. This system allows the user to insert or remove corrective first-surface optics...
McPHERSON
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LAMP MEASUREMENT
The BLS1000 and BLS1800 lamp measurement systems from Bentham Instruments Ltd. are equipped with 1.0- and 1.8-m-diameter integrating spheres, respectively. The systems are available with a variety of...
Bentham Instruments Ltd.
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RAMAN SYSTEM
The new Raman system from Renishaw plc combines a Raman imaging spectrometer with the Leica DMLM microscope, allowing spectroscopic measurement and chemical imaging of samples smaller than 1 µm. It...
Renishaw PLC, Spectroscopy Products Div.
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SPECTRAL MEASUREMENT
Ocean Optics Inc. has unveiled two PC-interface systems that enable the user to convert the company's high-sensitivity S2000 miniature fiber optic spectrometers into spectroradiometers for measuring...
Ocean Optics - Part of Ocean Insight
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SURFACE MEASUREMENT
Fisba Optik, represented by Breault Research Organization Inc., offers its Twyman-Green phase-shifting interferometers. The Fisba µPhase MicroInterferometer, with a base unit the size of a matchbox,...
Breault Research Organization Inc.
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IR TRANSDUCERS
Everest Interscience Inc. has introduced its Series 4000.4GX ultrahigh-speed infrared temperature transducers. The temperature response time is 20 ms with a turn-on time of 10 ms. The sensors are...
Everest Interscience Inc.
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VME COMPUTERS
National Instruments has released its family of 6U, Intel Pentium-based, embedded VME computers that are compatible with the leading test and measurement software. The VMEpc-600 series includes the...
National Instruments Corp.
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