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Photonics Spectra - May 1999
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Issue Library
Features
Fiber Amplifiers:
Amplifying telecommunications signals in optical fiber systems is a relatively straightforward process: Signal photons + pump photons + erbium atoms = more signal photons. Wavelength...
Can Lasers Teach Bullets to ’Squeal’?
Often at the scene of a shooting, investigators have little evidence to work with. The shooter usually runs away with the gun, leaving behind little more than a couple of spent shell casings....
Camera Users:
Image intensifier tubes produce images in low-light situations, but the best tool for an application is not always obvious to the subjective human eye. Astronomy, surveillance and broadcast...
When It’s Perfection or Nothing, Quality Leaders Turn to Photonics
Every fuel rod that leaves the Westinghouse Commercial Nuclear Fuel Div. must perform flawlessly. For an industry in which a microscopic defect can lead to a three-week shutdown that costs $1 million...
Progressive-Scan Gives You the Big Picture, Quickly
Global manufacturing competition and the ever-increasing requirements for improved product quality have placed greater demands on vision systems to acquire and process more visual information in...
Photonics Brings the Big Screen to Life
The market for data projectors has grown rapidly in the past few years because of dramatic performance improvements coupled with steadily decreasing unit price. For example, several products deliver...
Photonics Makes Connections in Space
The first round-trip space mission to Mars would to bring back rock and soil samples for laboratory study on Earth. A critical aspect of such a mission will be the automated separation of a surface...
Ultrafast Lasers - Power Isn’t Everything
Ultrafast lasers are about to enable a variety of new scientific, engineering and industrial applications. These applications range from the technical, such as high-speed circuit testing and...
Tech Pulse
Two-Photon Absorption Could Advance 3-D Data Storage
TUCSON, Ariz. -- Molecules that can simultaneously absorb two photons efficiently may soon find uses in three-dimensional fluore scence imaging, optical data storage and lithographic...
IR Spectroscopy Analyzes Polycyclic Aromatic Hydrocarbons
Scientists have tried for years to identify the matter that exists between stars. Now a Stanford University research team may be closer to reaching that goal. The group exposed polycyclic aromatic...
Light-Activated Drug Unclogs Blocked Arteries
Atherosclerosis is the accumulation of fatty plaque in arteries, a major cause of heart attack and stroke. A group of researchers at Stanford University has discovered that a drug commonly used in...
Physicists Manipulate Bose-Einstein Condensate to Advance ’Atom Laser’
Two years after researchers at the Massachusetts Institute of Technology developed a coherent beam of atoms they called an atom laser, physicists at the National Institute of Standards and Technology...
Blue Diodes Get Ultrashort Pulses
BERLIN -- PicoQuant GmbH has introduced a blue diode laser system with a picosecond pulse width and high repetition rate that may prove useful as an excitation source in time-resolved fluorescence...
Trans-Atlantic Cable Will Link Europe with Americas
Global Crossing Ltd. in Hamilton, Bermuda, has announced plans to implement Atlantic Crossing 2, an undersea fiber optic cable linking the major cities of Europe with those of North America, South...
Large-Capacity Transmission Network Coming to China
Nortel Networks has signed a multibillion-dollar contract with MII/China Telecom to build a 10-Gb/s network stretching 457 km from Shanghai to Nanjing. The four-fiber ring network can accommodate...
Cymer Expands into Extreme UV
SAN DIEGO -- As the semiconductor industry debates next-generation lithography, the players are scrambling to develop components for the narrowing field of choices. Cymer Inc. recently announced that...
Database Could Aid US Military Night Operations
Surface Data Co. in San Diego has released an advanced optical properties database that could assist US military forces during night operations. It includes hard-to-obtain information on selected hot...
Polarization Boosts Display Efficiency
ROCHESTER, N.Y. -- Displays are notoriously inefficient energy users, but scientists at the University of Rochester have developed an optical polarization method to change that, creating nearly...
Fiber Optic Sensor Performs Under Pressure
BLACKSBURG, Va. -- Driven by a $2 million contract with the US Department of Energy, researchers at Virginia Polytechnic Institute have produced a self-calibrated interferometric/intensity-based...
Laser Technique Analyzes Microelectronic Thin Films
CAMBRIDGE, Mass. -- A Massachusetts Institute of Technology researcher has developed a nondestructive, noncontact, laser-based acoustic technique called impulsive stimulated thermal scattering that...
Laser Communications Comes out of the Fog
HUNTSVILLE, Ala. -- Like ground-based radio-frequency communications systems, free-space laser communications systems can suffer from performance problems under adverse atmospheric conditions. In...
Photonic Crystals Grow Themselves
Researchers have experimented with photonic crystals for more than a decade, seeking to develop materials that can be used as building blocks for photonic devices. An innovation from the University...
Laser Altimeter Measures Ice Sheets
Scientists are gearing up to shine lasers from the sky onto Greenland and the Antarctic to monitor changing conditions in the areas’ huge ice sheets that could contribute significantly to the...
Technique Takes Deeper Look at Paper
When papermakers cook up a new recipe for paper, they want to be sure it's going to work right before making reams and reams of it. Chemists at the University of Jyväskylä have developed...
Phase-Separation Method Leads to Better AR Coating
Since the 1930s, it has been common practice to cover lenses with antireflection coatings to enhance the performance of devices that require the maximum transmission of light. Despite years of...
Phosphor Emits Two-for-One Photons
UTRECHT, Netherlands -- Researchers at the University of Utrecht’s Debye Institute have made a promising leap in the efficiency of fluorescent phosphors, creating a material that absorbs one UV...
Raman Spectroscopy Helps to Decrease Engine Emissions
NASHVILLE, Tenn. -- Engineers at Vanderbilt University are using Raman spectroscopy to analyze combustion in direct injection gasoline engines -- research that could lead to decreased pollution....
Raytheon Completes Testing of Digital Flight Data Recorder
The black box aboard commercial aircraft often proves instrumental in re-creating events leading up to an accident. Raytheon Co. has developed an advanced digital flight data recording system that...
Siemens Demonstrates 1.2 Tb/s Transmission over One Optical Fiber
Siemens Information and Communications Networks in Boca Raton, Fla., has taken a step toward increasing the speed and data capacity over fiber optic networks by demonstrating transmission rates of...
Sky-Bound Lidar Offers Tool for Weather Projections
BOULDER, Colo. -- Weather forecasting is getting a helping hand as scientists develop systems that take lidar to the sky. Projects such as the Multicenter Airborne Coherent Atmospheric Wind Sensor...
New Promise for Holographic Storage
STANFORD, Calif. -- A group of Stanford University researchers may be a step closer to the practical reality of holographic data storage systems. The team limited the volatility of the storage...
Test-Tube Photosynthesis Turns Water into Oxygen
One of the great mysteries in nature is how plants use sunlight to turn water into oxygen. A group from Yale University in New Haven, Conn., has engineered a device that could help researchers better...
light speed
ABB Robotics and Cognex Forge Deal
ABB Robotics AB, a Swedish supplier of robots for factory automation, has agreed to purchase nearly $1 million worth of Cognex Corp.’s machine vision systems over the next two years. ABB will integrate the vision systems in a line of "pick and place" robots designed for light industrial applications such as food processing and pharmaceutical packaging.
Boeing Receives $125 Million for Laser-Based Defense Research
The US Air Force has paid $125 million for the first portion of a $3 billion contract with Boeing Co. of Seattle to research whether space-based lasers can shoot down long-range missiles. Boeing is...
Photonics Industry Watches Warily for China Export Policy Changes
Findings from the Cox Report, a six-month congressional investigation into the transfers of sensitive technology to China, may have broad implications for photonics companies that export products,...
Department of Defense Seeks Applicants for R&D Awards
The US Department of Defense is soliciting applications for its Small Business Innovation Research program beginning May 1. Proposals will be accepted from July 1 to Aug. 11. The program provides...
Solid-State Laser Market to Eclipse $1 Billion in 2003
The forecast for solid-state lasers continues to look rosy, driven by robust growth in the diode-pumped laser sector. Business Communications Co. Inc. in Norwalk, Conn., makes this prediction in its...
Firms Battle over Laser Surgery Market
Inventors who take on the expense of filing patents in a foreign country expect financial returns that justify the additional costs, according to a National Science Foundation report. The brief...
US Government to Harmonize Laser Standards
Laser manufacturers should be aware that the US Food and Drug Administration has proposed changing regulations on laser performance standards. The amendments would bring standards set by the Center...
Semiconductor Industry Shows Signs of Life
Recent years have been bleak for the semiconductor sector, but January sales indicate the industry’s fortunes are beginning to take a turn for the better. According to figures collected by...
Partners Join Lithography Initiative
Months after unveiling plans to deliver optical lithography systems at 157 nm, Santa Clara, Calif.-based Silicon Valley Group has signed on several supplier companies to help bring its systems to...
General Scanning and Lumonics Complete Merger
Shareholders of General Scanning Inc. in Watertown, Mass., and Lumonics Inc. in Kanata, Ontario, Canada, have approved resolutions to merge the two industrial laser-based systems manufacturers. The...
Patent Activity Confirms Market
Two companies that make excimer laser systems for surgical vision correction, Visx Inc. of Santa Clara and Nidek Inc., have aggressively drawn battle lines in a dispute over patent and trade claims....
Schott-CML Fiberoptics to Acquire Fostec
Schott-CML Fiberoptics, the joint venture between SLI Inc. and Schott Corp., has signed a letter of intent to acquire Fostec Inc. in Auburn, N.Y. Terms of the deal were not disclosed. Founded in...
Industrial Laser Shipments Decline in ’98
Shipments of industrial laser equipment and systems for North America declined 5 percent last year, a drop-off that some attribute to the Asian economic crisis. That’s according to the latest...
Defense Program Spurs Development of Optical Data Storage
The Defense Advanced Research Projects Agency has organized an industry-university consortium to develop fast readout optical storage technology. Call/Recall Inc. in San Diego, which develops optical...
Survival Lessons for a Changing Industry
A new study by Harvard University and Massachusetts Institute of Technology researchers, in Cambridge, Mass., might hold valuable lessons for photonics companies looking to survive the rapid pace of...
Accent on Applications
Compact Cooler Chills Compact Detector
Robots offer speed and precision to many manufacturing processes, such as the application of paint on automobiles. However, optical components facilitating this precision need to be compact to easily mount on the robot's arm and rugged to endure the rigors of industrial environments. OptiSense GmbH of Bochum, Germany, manufactures the PaintChecker system, which uses an infrared detector to...
Laser Display's Colors Don't Fade
Innovative technologies take the spotlight at Boston's Museum of Science, where waves of ambient natural light flow through the modern glass-walled foyer. Although this light can create an open...
Mini-Nd:YAG Laser Illuminates Microfluids
In satellite-based synthetic aperture radar or remote sensing applications, widely spaced imaging apertures help boost resolution. Even in space, however, practical limits to how much sky a satellite...
Pen's Microdisplay Is the Write Stuff
The notion that e-mail would supplant pens and paper is appearing increasingly misguided. British Telecom hopes to combine the best of both worlds with its SmartQuill pen, which will enable users to...
Online Interferometer Keeps Machining 'Stress-Free'
Precision is essential to the diamond-turned infrared optics and aspheres machined by Pilkington Optronics. However, the company occasionally had found that imprecise mounting of optics on the...
Presstime Bulletin
Coherent's Robert Gelber Retires
After 13 years at the helm of Coherent Auburn Group, Robert M. Gelber has resigned as president to spend more time on personal activities. Gelber is also retiring as executive vice president of Coherent Inc., headquartered in Santa Clara, Calif. Bernard Couillaud, Coherent's president and CEO, lauded Gelber's role in growing Coherent Auburn Group from an internal supplier of components to an...
DSM Desotech Acquires Dupont's Solid Imaging Business
DuPont has sold its Somos solid imaging business to DSM Desotech Inc., a business unit of DSM NV, headquartered in The Netherlands. DSM Desotech produces performance materials, polymers and...
Raytheon Ships $40 Million Adaptive Optics System
An adaptive optics system designed and produced by Raytheon Optical Systems Inc. in Danbury, Conn., has arrived at the US Air Force Research Laboratory's Maui Space Surveillance Complex in Hawaii. ...
Spectra-Physics Anticipates Dip in First-Quarter Sales
Spectra-Physics of Mountain View, Calif., has announced that it expects to report lower-than-anticipated sales for the quarter ending April 2, 1999. It foresees sales between $30 million and $32...
TRW Delivers Laser for Extreme-UV Lithography
Extreme-UV light sources will allow the next generation of lithography equipment to produce circuit features smaller than 0.1 µm -- an improvement by a factor of two over other available...
Products
LIGHT DETECTION
High-sensitivity UV-enhanced photodiodes from Detection Technology Inc. are designed for spectroscopy, photometry, fluorescence analysis, and UV intensity and exposure metering. A UV-enhanced diode structure and special window entrance processing provide a spectral response in the 190- to 400-nm region. The sensitive spectral range covers the region from 190 to 1100 nm. Active area sizes of 2.4 x...
Detection Technology Plc
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EDFA GAIN BLOCK
The NP-2000 erbium-doped fiber amplifier (EDFA) optical gain block from Nuphoton Technologies is an efficient fiber pumped with 980-nm semiconductor laser pumps. Wavelength combiners combine the pump...
Nuphoton Technologies
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FIBER OPTIC MULTIPLEXER
TC Communications Inc. has unveiled its TC8000X, a 4- to 24-channel analog/intercom fiber optic multiplexer that supports voice bandwidths from 300 to 3400 Hz. It provides intercom and analog...
TC Communications Inc.
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OPTICAL TRANSMISSION
MPB Communications Inc. has unveiled its RRP-1 remote Raman fiber laser pump, a 1-W, 1450- to 1480-nm source for remote pumping of dense WDM systems. It provides a total launch power of up to 30 dBm....
MPB Communications Inc.
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WDM COMPONENT TEST
New Focus Inc. has unveiled a tunable laser for fast testing of WDM telecommunications components. The model 6428 is designed to perform swept-wavelength characterization of passive optical...
Newport - New Focus
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DATA TRANSFER
Matrox Imaging has announced that its Genesis scalable vision processors and Genesis-LC frame grabbers support the low voltage differential signaling standard (LVDS) for interfacing to digital output...
Matrox Imaging
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MACHINE VISION
The F150 machine vision system from Omron Electronics Inc. includes a camera, light source, lens, keypad and cables for $4300. No programming is required, and all system setup and use are...
Omron Automation
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MINI CCD CAMERA
The CCX-V11 Thumb-Cam from Sony Electronics Inc. is a high-resolution compact video camera head unit for space-critical scientific, educational, research and analysis applications. At 30 g, the unit...
Sony Electronics Inc., Visual Imaging Products Group
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PCI FRAME GRABBER
Multipix Imaging Ltd. is offering the PicPort-Stereo PCI frame grabber from Leutron Vision. The device employs two A/D converters to simultaneously acquire and digitize two video streams, which are...
Multipix Imaging Components Ltd.
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SMART CAMERAS
The VC series of industrial smart cameras from Vision Components includes a Megapixel model that measures 1280 x 1024 pixels. Suitable for semiconductor applications, the increased resolution enables...
Vision Components GmbH
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POLARIZATION EXTINCTION
Oz Optics Ltd. has introduced a polarization extinction ratiometer that analyzes light from a fiber. The meter reports the polarization extinction ratio of the light up to 30 dB, as well as the...
OZ Optics Limited
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OPS LASER TECHNOLOGY
Coherent Inc., Laser Group, has released optically pumped semiconductor laser technology that provides high-power laser output from a single-mode fiber. It can produce more than 500 mW of 980-nm...
Coherent Inc.
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RED PIV LASER SOURCE
A dual oscillator alexandrite laser source for particle image velocimetry applications has been unveiled by Light Age Inc. The PAL-PIV laser offers high pulse energy, 500 mJ per pulse, at repetition...
Light Age Inc.
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LEAD SALT LASER
Laser Components GmbH says its double-heterostructure laser has achieved operation in pulsed mode in temperatures up to 60 °C, an increase of 40 °C over the previous record. The standard laser chip...
Laser Components Germany GmbH
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FIBER OPTIC LAMP
The CF-1000 fiber optic light source from Illumination Technologies Inc. has an internal eight-position color filter wheel and features both DC regulation and internal light feedback compensation for...
Illumination Technologies Inc.
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MINI LIGHT SOURCE
The FiberLight from Heraeus Noblelight GmbH is a small light source for the UV, visible and near-IR spectral range. Its miniature, electrodeless deuterium lamp consumes only 3 W. This handheld,...
Heraeus Noblelight GmbH
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SILICON PHOTODIODE
Hamamatsu Corp. has introduced a silicon photodiode for near-infrared operation that is suited for spectrophotometry, optical measurement and environmental sensors that measure oxides of nitrogen....
Hamamatsu Corporation
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DURABLE COATINGS
Dura-Max ion process protected silver and dielectric coatings from Opco Laboratory Inc. are suitable for substrates that are sensitive to stress and heat. Unlike aluminum coating, the absorption band...
OPCO Laboratory Inc.
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SAPPHIRE OPTICS
Meller Optics Inc. can custom-fabricate sapphire optics that are impervious to most acids, alkalis and harsh chemicals to approximately 350 °C, making them suitable for use in hostile environments....
Meller Optics Inc.
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BRIGHT TEST SOURCE
A white-light test source has been added to the optoelectronic product offerings from Thorlabs Inc. The ASE-FL7001 high-brightness test source produces amplified spontaneous emission ranging from...
Thorlabs Inc.
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CHEMICAL IDENTIFICATION SYSTEM
InPhotonics Inc. has released a compact Raman spectrometer with sampling probe and data acquisition and analysis system. The InPhotote has a standard configuration of 785-nm excitation, and a...
InPhotonics (See Bascom-Turner Instruments)
COMPACT UV-VIS SPECTROPHOTOMETER
Shimadzu Scientific Instruments Inc. says that its UV Mini-1240 UV-VIS spectrophotometer is highly versatile and contains performance features found in more expensive instruments. Standard onboard...
Shimadzu Scientific Instruments Inc.
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CONNECTOR ANALYSIS
The Connect-Chek 6000 from Norland Products Inc. is an interferometric optical profiler that automatically analyzes the geometry of PC polished connectors. It measures the radius of curvature, offset...
Norland Products Inc.
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DEFECT INSPECTION
PasteInspect from Cognex Corp. is a machine vision hardware and software package for inspecting defects that occur during the printed circuit board screen printing process. It is designed for...
Cognex Corp.
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INTERFEROMETRY
Optical Surfaces Ltd. can supply Fabry-Perot etalons in matched pairs up to 150 mm in diameter with accuracies to l/300 and ring or optically contacted spacers. Wedge angles are 5 min of arc for...
Optical Surfaces Ltd.
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