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Photonics Spectra - October 2001
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Issue Library
Features
A Basement Full of Lasers
It's a short walk from the third floor of the Welch Building on the University of Texas campus to the basement of the Engineering Science Building. That's enough, however, for mid-August in Austin to work its magic. Temperatures above 100 make the stroll a steamy affair. The basement of the building is cool and so is the photonics technology there. The basement houses a 6000-square-foot...
Technology Close-Up
How much valuable time have machine vision developers spent sifting through vast arrays of expensive and often incompatible connectors and cables from camera manufacturers and frame grabber...
Photonics Design and Solutions
Consistency and repeatability are difficult tasks in diode laser manufacturing, but they are critical for high-volume manufacturing of devices that users can trust to work as promised. Process...
Sensitive Detection
Capillary electrophoresis is a modern analytical separation technique that has steadily gained importance in recent years, especially in bioanalytical, clinical and pharmaceutical...
Giving a Green Light
Green lasers have been important since the very first days of the laser. Indeed, many of the earliest applications in medicine, graphics and basic research demonstrated the versatility of green laser...
Intensified Fluorescence
Fluorescence is a central technology in medical testing, drug discovery, biotechnology and imaging. In almost all uses of fluorescence, the fluorophores are in the free-space condition, in which they...
Future Computing
Seventeen years ago, Alan Huang wrote in the Proceedings of the IEEE about the prospects of optical computing. The barriers were, he said, not so much technological, "but more and more [challenges]...
Tech Pulse
Quantum-Dot Lasers Produce >5 mW
Researchers at Universitat Wurzburg in Germany have demonstrated InAs/GaInAs quantum-dot lasers that produce more than 5 mW of 1.3-µm light at room temperature. The lasers, which exhibited threshold...
Laser Deposits ITO on Flexible Substrate
A team of researchers at the Naval Research Laboratory in Washington has grown thin films of indium tin oxide on flexible substrates of polyethylene terephthalate using pulsed laser deposition. The...
Motorola Grows GaAs on Silicon
While III-V semiconductors have revolutionized electronics and photonics, the expense of their manufacture has limited widespread application. Researchers at Motorola Labs promise this will change....
Single-Photon Detector Flashes Faster
Photodetectors typically require high gain to respond to the energy of a single photon, but gain mechanisms take time to reset between photon events and thus limit the detector bandwidth to...
Fine Structure Constant, Speed of Light Varied with Time
In 1937, physicist Paul A.M. Dirac suggested that the fine structure constant, which defines the strength of the electromagnetic force, might vary over time. Now a team of researchers from the...
Laser Enables Precision Arc Welding
Welding is big business. Approximately $2 billion and $600 million are spent annually on arc welding and laser welding equipment, respectively. Now researchers at Ohio State University have...
Double the Light, Double the Spectra
Spectroelectrochemistry offers researchers a peek into numerous material properties and reaction mechanisms of organic and inorganic systems. Now a team at the University of Burgos has devised a...
Quantum Dots Optically Code Biomolecules
Chemists at Indiana University have taught quantum dots to fear water. And that's a good thing. For the past three years, several research groups have developed these nanometer-scale,...
Autofocus Glasses Under Development
As we age, the lenses in our eyes lose their flexibility. Eventually, most of us need glasses for reading. The problem is that reading glasses will not work for seeing distant objects, so we need...
Lasers Deposit MgB2
High-temperature superconductors have been around for 15 years, but the levitating trains and zero-loss power lines that these materials promised have yet to make an appearance. Nevertheless,...
Dash Lasers Exhibit Room-Temperature Operation
Researchers at the University of New Mexico in Albuquerque have fabricated quantum-dash lasers of InAs and InP that display pulsed output at 1.6 to 1.66 µm at room temperature. The devices feature...
Corning, Xanoptix Display 3.125-Gb/s-Per-Channel Transceiver
Corning Inc. of Corning, N.Y., and Xanoptix Inc. of Merrimack, N.H., have achieved data rates of more than 225 Gb/s over a total distance of 2.2 km of Corning's InfiniCor multimode fiber. The...
Laser Yields Tiny Bubbles of Boron
Don Ho is known for his "Tiny Bubbles in the Wine," but a research group is staking a claim to bubbles of boron. By synchronizing a laser-induced plasma with a radio-frequency-modulated plasma, the...
Light Fields Act as Atom Optics
Atom optics are essential to realize the potential of coherent matter waves in applications such as atom holography and interferometry. Researchers at Ludwig Maximilians Universitat in Munich and Max...
Laser Writes Microlenses on Polyethylene
Electronics isn't the only technology where smaller is better. The same is true for infrared optical systems, where microlenses and diffraction gratings improve system performance. Traditionally,...
Nanoparticles Stabilize Colloidal Crystals
Ask those who have tried to produce photonic bandgap materials in the lab with colloidal suspensions, and you're likely to hear about the cracks that appear as the crystals dry. A discovery by a team...
Smart Sweeper Sorts Trash with Laser Light
The next time a street sweeper finishes its run, take a look at the litter it left behind for another pass. The problem is that drivers must not only navigate the truck, but also simultaneously...
Screen Printing Creates LED Display
Organic LED displays offer better contrast, wider viewing angles and lower power consumption than liquid crystal screens. Their drawback, however -- particularly for those based on conjugated...
Organic Salt Displays Laserlike Emission
Researchers have ascribed the laserlike emission from organic dye molecules and conjugated polymers to mechanisms such as cooperative emission, amplified spontaneous emission and the formation of...
Lasers Replace Magnet Trap for Condensates
Bose-Einstein condensates are unique phases of matter in which particles share the same quantum wave function. They represent a coherent state of matter, analogous to the coherent state of photons...
Antimissile System's Functionality Questioned
Lt. Gen. Ronald Kadish, director of the Ballistic Missile Defense Organization, has announced that this month's test of the Ground-Based Midcourse Defense Segment (formerly National Missile Defense)...
Solid Electrolysis Offers <50-nm Near-Field Probes
A team of researchers from the University of Basel in Switzerland and from Karl-Franzens University in Graz, Austria, has produced aperture probes for near-field optical microscopy using controlled...
Polymer Optical Amplifiers Are on the Way
Optical polymers are attractive candidates for composing future integrated optical devices. The desirable rare-earth ions are insoluble in the polymers, however, precluding their use in integrated...
Solar Plane Sets Altitude Record
Helios, a solar-powered aircraft developed by NASA's Dryden Flight Research Center in Edwards, Calif., and AeroVironment Inc. of Monrovia, Calif., has broken the world record for altitude of a...
512-Pixel Detector Goes Organic
Soon man-made detectors may take their cue from nature and do their work organically. Researchers have demonstrated an image-capture array based on an organic light sensor, promising manufacturers...
UV Water Treatment for NYC?
To ensure the quality of the nation's drinking water, the Environmental Protection Agency is enforcing increasingly strict treatment regulations. In the case of New York City's water supply, this...
light speed
Veeco Acquires Applied Epi
Veeco Instruments has agreed to acquire Applied Epi, a St. Paul, Minn., manufacturer of molecular beam epitaxy equipment used in making high-speed III-V compound semiconductor devices for photonic and electronic devices. The acquisition will cost Veeco 4 million shares of stock and $30 million in cash, but will immediately quadruple its active deposition equipment sales, said Edward Braun,...
Navy OKs Multispectral Imager Contract
The Naval Air Warfare Center has awarded Optics 1 Inc. a five-year, $25 million contract to develop an advanced multispectral optical surveillance system. The system will add short-wave infrared...
NASA Contractor Pleads Guilty in Laser Fraud
An excimer laser developer has pleaded guilty to four charges that accuse him of accepting payments for lasers that he did not deliver and accepting services for which he did not pay. In an Aug. 3...
Industrial Laser Shipments Down
Laser manufacturers shipped 13 percent fewer industrial lasers and systems in the second quarter of 2001 than in the same period in 2000, according to the Association for Manufacturing Technology's...
US Debates Export Regulation Changes
The US Senate voted last month to rewrite export control laws related to military/commercial dual-use technology, possibly making it easier for photonics companies to sell "mass market" products...
Calculate Value in Manufacturing Flexibility
Buying a new production tool seems like a straightforward decision, but new research suggests that conservative estimates may not give enough weight to the value of flexibility in...
China Alters Patent Laws
As one step toward entry into the World Trade Organization, China has changed some of its patent laws to bring it closer to compliance with the Agreement on Trade-Related Aspects of Intellectual...
Accent on Applications
Bellows Improves Laser Resonator Seals
The stability and reliability of the argon-ion laser has made it a workhorse for a range of applications from writing masks for semiconductor circuits to measuring the flow rate of cell protoplasm. As countless subtle improvements continue to refine the laser's performance, its only significant drawback, aside from its prodigal energy consumption, may be a tendency to collect dust while in...
Chip Rotation Doesn't Disorient Vision System
Imaging integrated circuits is a simple enough task for today's machine vision technology, but problems emerge when a vision system also must identify microscopic details on slightly skewed dies at...
16 Megapixels Drive Camera Back
Traditional full-frame image sensors did not offer Phase One's professional camera customers the photoresponse that they required for their work. The traditional CCD's polysilicon gate structure...
In Situ Spectrometers Deliver Fast Solution
Most pharmaceutical laboratories operate on limited time. Once patented, a new drug substance must navigate development and clinical trials before its manufacturer can see a return on its investment....
Ordinary CCDs Survive Radiation Environments
Charged with the responsibility of cleaning up one of the country's most dangerous toxic waste dumps, CH2M Hill Hanford Group began looking for inexpensive video camera systems that could resist...
Presstime Bulletin
Helium Prices Going Up
Helium producer and supplier Air Products and Chemicals Inc. of Lehigh Valley, Pa., has announced that it is increasing the price of liquid and gaseous helium by 18 percent. Helium is employed in photonics as a laser gas, as a heat transfer agent for the production of fiber optics and as a shielding gas for welding. The company cited a predicted worldwide shortage of helium through 2005. In...
Two-Photon Absorption Produces Sculpture, Spring
Researchers at Osaka University in Japan have used two-photon polymerization to construct a sculpture of a bull the size of a red blood cell and a 300-nm-diameter spring. The work, which they...
OZ Optics Announces Automated Alignment of Polarization Maintaining Fibers
OZ Optics Limited, a world leading supplier of fiber optic products for existing and next-generation optical networks, announces that it has upgraded its line of polarization extinction ratio meters,...
OZ Optics President and CEO was Named Ontario’s Entrepreneur of the Year for Manufacturing
OZ Optics Limited, a global supplier of fiber optic products for existing and next-generation optical networks, was recently honoured at the Ernst & Young 2001 Entrepreneur Of The Year...
Melles Griot Awarded Contract for Automated Pigtailing System
Melles Griot, a manufacturer of automated manufacturing solutions for the fiber-optic telecommunications industry, announces that it has signed a $500,000+ contract to provide an automated,...
Kodak Introduces New Software To Allow Enhanced Analysis of Digital Images
Eastman Kodak Co. received an Emmy Award for its role in the development of the consumer camcorder from the National Academy of Television Arts & Sciences (NATAS), which named Hitachi, JVC,...
Laser Light Diffracts Electrons
A research team at the University of Nebraska in Lincoln has confirmed the existence of the Kapitza-Dirac effect, the diffraction of particles by a standing wave of light predicted by Peter L....
Femtosecond Laser Pulses Combine
A team at JILA in Boulder, Colo., has taken the first steps toward enabling researchers to tailor laser pulses to their particular ultrafast science experiments. In the Aug. 17 issue of Science, the...
EXFO Acquires EFOS Inc., a Precision Light-Based Curing Technology Company
EXFO Electro-Optical Engineering Inc. (NASDAQ: EXFO, TSE: EXF) announced today that it has entered into a definitive agreement to acquire EFOS Inc. for 3.7 million EXFO shares and US$25 million in...
Recycled Beamlet Images Fusion Tests
Three years of reassembly and approximately $13 million later, Lawrence Livermore National Laboratory's prototype Beamlet laser for its National Ignition Facility in Livermore, Calif., is back at...
Agere Systems to Provide Wireless Platform for GSM Phones in China
Agere Systems is providing its wireless platform for use global system for mobile (GSM) communications cellular phone handsets. Beijing, China-based PTIC Capitel is using Agere's semiconductor and...
Products
NONCONTACT SENSOR
Hohner Corp. offers a pen-size roughness sensor for use as a quality control tool for in situ inspection of surface roughness. This noncontact device has no stylus tip, which makes it suitable for metals and soft materials such as paper, ceramics and paint. A measurement range of up to 100 relative units can be translated into absolute roughness values. The compact handheld device is...
Hohner Corp.
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SPECTROMETER
The 3DDLS spectrometer has been introduced by LS Instruments. It employs a 3-D cross-correlation technique to suppress the multiply scattered light present at measurements with turbid samples. The...
LS Instruments AG
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FIBER OPTIC ISOLATORS
Miniature fiber optic isolators with diameters of <4 mm are available from Oz Optics Ltd. The company says they block reflected signals in fiber optic systems and eliminate feedback problems. The...
OZ Optics Limited
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SPECTROMETRY SOFTWARE
StellarNet Inc. offers the second version of its SpectraWiz software, which is free of charge with the purchase of the company's portable fiber optic spectrometer instrumentation. Application units...
StellarNet Inc.
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AREA-SCAN CAMERA
The A202k is a 48-fps, 1004 x 1004 progressive-scan camera with 7.4 x 7.4-µm pixels and Camera Link output. Basler Vision Components says its ability to output in Camera Link allows easy integration...
Basler AG
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INDUSTRIAL CAMERAS
Small-form-factor industrial cameras for high-volume OEM and automated imaging applications have been introduced by JAI AS. The CV-A50 and -A60 have a 1/2-in. and a 1/3>-in. monochrome CCD sensor,...
JAI A/S
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DIGITAL IMAGING
The DFWS-77 digital imaging station from Sony Electronics Inc. controls multiple IEEE-1394-compliant and compatible images on PC or video monitors, stores images on local media or a network, prints...
Sony Electronics Inc., Visual Imaging Products Group
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FRAME GRABBERS
The PX series of video frame grabbers from Firstsight Vision Ltd. have a flexible interface for capturing video into Linux-based machine vision applications. The devices act as a bus master, handling...
Stemmer Imaging Ltd.
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MACHINE VISION
Cognex Corp. has added two models to its line of machine vision systems designed for multicamera guidance, gauging and defect inspection applications. Checkpoint III features a frame grabber that...
Cognex Corp.
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X-RAY IMAGER
Rad-icon Imaging Corp. has announced the RadEye3 large-area, high-resolution x-ray digital imager. It is configured from three RadEye1 photodiode arrays and has a 2:3 aspect ratio with 48-µm pixels,...
Teledyne Rad-icon Imaging
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UV EPOXY
Electronic Materials Inc. has released Optocast 3580 and 3590 curable epoxies with refractive indexes of 1.4823 and 1.550, respectively. They contain no monomers, have no odor and are nontoxic. These...
Electronic Materials Inc.
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SPECTROPHOTOMETER
NanoDrop Technologies Inc. has introduced the NanoDrop spectrophotometer for accurate measurement of 1-µl samples. Suitable for field use, the compact battery-powered device performs general UV/VIS...
NanoDrop products
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TEMPERATURE CONTROL
Caron Products & Services has introduced standard 16-step programmable ramp and soak controllers for its stability and photostability chambers. They can be self-tailored for specific requirements...
Caron Products & Services Inc.
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UV ADHESIVE
Master Bond Inc. has introduced a single-component, high-viscosity, optically clear adhesive that matches the refractive index of glass (1.46). UV15-7LRI cures at room temperature when exposed to UV...
Master Bond Inc.
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MULTICHANNEL LASER
The PDL-808 Sepia is a multichannel picosecond diode laser available from PicoQuant GmbH. The modular system can drive up to eight laser heads in parallel in synchronous, delayed or user-defined...
PicoQuant GmbH
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CUSTOM LASERS
Distributed feedback diode lasers that can be customized for operation at wavelengths from 761 to 2050 nm are available from Sarnoff Corp. The lasers offer single-wavelength output with >25-dB...
SRI International, Integrated Systems & Solutions
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LASER CUTTING
PRC Laser offers a CO2 laser cutting and welding technique for three-dimensional formed parts. The technique incorporates a 3000-W CO2 laser integrated with an articulated arm beam delivery system...
PRC Laser Corp.
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LASER HEADS
A wide range of detector heads for OEMs of laser equipment and with various laser power and energy measurements are available from Ophir Optronics Inc. The company says it has expanded its...
MKS Ophir, Light & Measurement
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Nd:YAG LASERS
Continuum Lasers' Leopard series of high-energy, picosecond Nd:YAG lasers are suitable for such applications as ranging, time-resolved studies and nonlinear dynamics. The instruments feature a...
Amplitude Laser Inc.
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SHORT-PULSE LASERS
Advanced Optical Technology Ltd. has introduced its Ace Q-switched Nd:YAG and Nd:YVO4 solid-state lasers, which produce high-peak-power TEM00 pulses in the 1- to 5-ns range at repetition rates to 20...
Advanced Optical Technology Ltd.
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SPOT WELDING
The ProWatcherpulse system from Armstrong Optical Ltd. monitors spot welding in real time and integrates noninvasively with most Nd:YAG laser systems. It also monitors the plasma plume generated by...
Armstrong Optical Ltd.
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LIGHT SOURCES
Hamamatsu Corp. has introduced calibrated light sources that provide a lamp life of 500 h for a variety of industrial and scientific applications. The L7820 utilizes a 30-W deuterium lamp and offers...
Hamamatsu Corporation
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OPTICAL DELAY LINE
The VariDelay manually variable optical delay line from General Photonics Corp. provides precision optical path variation up to 20 cm. The company says the device can be incorporated into network...
General Photonics Corp.
EDGE AND ANGLE OPTICAL POLISHING
Many optoelectronic manufacturers of devices such as waveguides, edge mirrors, VOA, AWG, dynamic gain equalizers and beamsplitters are beginning to acknowledge that end-face polishing can optimize...
Valley Design Corp., Headquarters
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ALIGNMENT
Pinpoint Laser Systems offers an adjustable microshim for precision machine leveling, positioning and mounting applications. This shim provides height positions in increments of 0.001 in. over a...
Pinpoint Laser Systems
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NANOTRANSLATION STAGES
Ultracompact nanotranslation stages from Aerotech Inc. are available in X, X-Y and X-Y-Z configurations. The ANT-25L stages, which measure 100 x 100 x 66 mm, offer 10-nm closed-loop resolution and...
Aerotech Inc.
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POSITIONING SLIDES
Velmex Inc. offers precision BiSlide assemblies for positioning and scanning in testing and automation. The slides have dual 45° V-ways for high rigidity in all directions, and the carriage moves on...
Velmex Inc.
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POSITIONING TABLE
O.C. White says its precision X-Y table provides extremely precise movement in start and stop modes, no additional travel when movement stops, and movement in both planes with the push of a button....
O.C. White Co.
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850-nm VCSEL
Designed for laboratory applications and for test and measurement of 10-Gb/s devices, Model 1780 from New Focus is an 850-nm, 10-Gb/s, directly modulated multimode vertical-cavity surface-emitting...
Newport - New Focus
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RAMAN SYSTEM
The Raman Systems R-2001 provides detailed spectral analysis of gels, powders, aqueous solutions, coatings and surface media. This integrated second-generation system from Ocean Optics Inc. consists...
Ocean Optics - Part of Ocean Insight
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WAVEFRONT SENSORS
The Haso NIR wavefront sensors from Imagine Optic are suitable for telecommunications applications such as optical alignment and testing, and source characterization and location. They have a 1500-nm...
Imagine Optic
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SPECTRAL PROCESSING
Opus 3.0 for Windows NT and 2000 has been released by Bruker Optics Inc. The software enables the simultaneous manipulation of multiple spectra through a set of spectral processing routines such as...
Bruker Optics Inc.
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OPTICAL TESTING
Exfo Electro-Optical Engineering Inc. has launched a universal test system for the installation and maintenance of optical networks. The FTB-400 is a modular platform that performs physical layer...
EXFO Inc.
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FLUID MECHANICS TOOLS
A range of planar laser-induced fluorescence (PLIF) measurement tools for fluid mechanics have been released by Dantec Dynamics A/S. The PLIF concept is based on mixing two liquids, one tagged with a...
Dantec Dynamics A/S
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WAVELENGTH CALIBRATION
Wavelength References has announced a miniature acetylene gas absorption cell with absorption lines that are insensitive to environmental effects and that offer an accuracy of 10-9. The cell has an...
Wavelength References
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