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Photonics Spectra - August 1999
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Issue Library
Features
An End to Bloodletting?
Each day millions of diabetics perform a ritual, stabbing their fingers with a metal lancet to draw a few drops of blood. After the blood is placed on a test strip, a machine reads the strip and...
Cancer in the Crosshairs
One problem of radiation and chemotherapy is the ravaging effect it can have on healthy, noncancerous cells. In the last few years, one treatment has gained attention as a viable alternative for some...
Adding Lanes to the Photonic Highway
If long-haul telephony marked the infancy of fiber optic communications, video and data transfer will mark its maturity. Increasing reliability and decreasing prices are the clear indicators that...
Photonics Under the Microscope
Predicting funding trends for laboratory research is more of an art than a science. Science at least follows some semblance of fixed natural laws that under repeatable conditions produce repeatable...
Physicians Consider Photonics Alternatives
Although photonics offers some positive and clear benefits to the medical practice, their expense and traditional consignment to niche applications leaves them open to competition from less costly...
The Quest for Beauty
The desire to preserve youth has its roots in ancient civilizations. The Egyptians used pumice to smooth wrinkles and remove flaws. Recipes for smoothing the skin with lemon juice and cucumber...
Combat by Remote Control
During the American Civil War, mounted Confederate scouts hand-sketched maps with remarkable speed and accuracy to aid Southern generals on the cusp of battle. Since then, laser-guided bombs and...
Photonics Rolls Up Its Sleeves
As might be expected, photonics plays a major role in manufacturing. But the story is bigger than that. Thanks to the application of photonics in such critical areas as semiconductors, electronics...
Sticker Shock!
The dental drill instills dread in millions of patients each year. Many find the vibration and high-pitched sound irritating and unpleasant. But for decades, the drill was the only widely accepted...
Vision Correction for the Masses?
Ask eye surgeons about the future of laser vision correction, and they’ll tell you that the number of procedures performed each year is growing at a meteoric rate. Laser eye centers are popping...
Tech Pulse
Camera Merges Disciplines to Produce 3-D Images
By combining technologies from medical imaging (computed tomography) and from radio astronomy (interferometry), researchers at the University of Illinois’ Beckman Institute for Advanced Science and Technology have developed a lensless camera that can capture three-dimensional images on a computer. Such a camera has an infinite depth of field, which means that it never requires focusing....
Optical Sensor Catches Drug Abusers
CAMBRIDGE, UK -- Optical sensors that detect biochemical reactions at the molecular level could be used to spot drug abuse by athletes within minutes. The technology promises to be a great...
Sensor Cultivates Agricultural Markets
DÜLMEN, Germany -- Each spring, a crop is planted down on the farm operated by Hydro Agri. And each fall, along with the produce, researchers reap data on the effectiveness of various fertilizer...
Aperture Masking Resolves Bright Star
BERKELEY, Calif. -- To study the secrets of a massive, bright blue star, astronomers at the University of California’s Berkeley Space Sciences Laboratory dusted off an old technique -- aperture...
Hyperspectral Aerial Imaging May Conquer Canker
Airborne hyperspectral imaging, a military technology originally designed to pick out camouflaged vehicles from surrounding foliage, may soon help detect a different concealed enemy: citrus canker....
X-rays Monitor Electron Density
A team at the University of California used picosecond x-ray diffraction to measure the response of GaAs crystal to sudden heating. This could advance efforts to monitor changes in electron density...
IR Laser Helps Elude Enemy Missiles
A mid-IR laser designed for use in next-generation electronic warfare systems has arrived at the US Naval Research Laboratory in Chesapeake Beach, Md. Designed by TRW Inc. of Redondo Beach, Calif.,...
Free-Electron Laser Emits in the Far-Infrared
Scientists have sought a convenient source of radiation in the far-infrared portion of the spectrum for the study of semiconductor nanostructures and constituents in the atmosphere. In an effort to...
Telescope Puts the Universe in Focus
In June, astronomers gave the public a glimpse of some of the sharpest IR images ever obtained by a ground-based telescope. The images from the Gemini North Observatory on the island of Hawaii show...
US, Japan Track Ghostly Neutrinos
Since the first neutrinos were detected more than four decades ago, researchers have sought better ways of detecting these elusive, high-energy particles that originate from nuclear reactors and...
Laser Sharpens Grinding Wheels
Advances in the electronics industry have led to the development of new materials, such as Al2O3-TiC magnetic heads and special glasses for hard disks and liquid crystal screens. However, these...
Near-IR Technique Sheds Light on Kinetic Reactions
Chemists at Marquette University in Milwaukee have used a multispectral imaging spectrometer constructed with an acousto-optic filter and an InGaAs focal plane array to study the kinetics of curing...
Lidar Detects Traces of Ethane in the Atmosphere
Laser Exploration Inc. in Midland, Texas, reported that, in a field test of its lidar system, it had identified seeping hydrocarbon gas, presumably from underground deposits. Using a Raman-shifted...
Microscope Records Chemical Makeup
MARTINSRIED, Germany -- Researchers at Max Planck Institut fur Biochemie have combined the atomic force microscope’s ability to define surface features with the infrared absorption techniques...
Nitrogen Splits GaInAs Conduction Band
Researchers at the Lawrence Berkeley National Laboratory reported that the presence of a nitrogen band formed a few tenths of an electron volt above the lowest energy conduction band in a gallium...
Organic LEDs May Improve Microdisplays
Organic light-emitting diodes (LED) offer several key advantages over conventional LEDs. Their high efficiency and resolution make them well-suited for integration on silicon integrated circuits and...
Fiber Optic Data System Debuts on Raytheon Plane
The flight data recorder aboard commercial airliners often yields important clues about the last moments before a crash. But the traditional shielded, twisted wiring used to collect parameters from...
Sapphire Probe Offers Wide Dynamic Range
Fiber optic temperature sensors offer wide dynamic range, immunity to electromagnetic interference and high sensitivity. They are typically used for measuring temperatures in applications such as...
Lens and Scanner Are Fabricated on a Single Crystal
The angular position and the spot size of a laser beam -- important to applications such as optical data storage, laser printing and head-up display technology -- traditionally have had to be...
Optical Coherence Tomography Expands Its Scope
Optical coherence tomography, recognized in biomedical circles as an excellent imaging method, is expanding its field of view into materials applications, most recently the nondestructive imaging of...
Researchers Achieve Higher Bandwidth over Single-Mode Fiber
A technology that would improve the transmission capacity of wavelength division multiplexing (WDM) systems on standard single-mode fiber may affect the majority of installed fiber networks....
New Findings on Single-Shot Laser Pulse Damage
Laser damage on short time scales is an area of active research. Because short pulses produce damage with a smaller statistical uncertainty than long pulses, femtosecond lasers for...
Copper Vapor Laser Clears Skin Vessels
MOSCOW -- The Center for Laser and Plastic Surgery, in conjunction with the P.N. Lebedev Physical Institute, has reported excellent results from the use of copper vapor lasers in the treatment of...
Solvents Polish Porous Silicon’s Efficiency
MALVERN, UK -- With regard to porous silicon, efficiency applies both to the material’s light-emissive qualities and to its cost-performance ratio. But until recently, stability has not been...
Near-IR Lasers Spot Mold in Soya Beans
Soya beans are one of the most popular foods in Japan. But each year a small portion of the crop is infested with green, white or brown mold. Most factories use random sampling to detect spoiled...
Glass Fiber Could Aid Laser Surgery
A hollow glass fiber promises improved performance for next-generation IR sensors and fiber delivery systems used in laser surgery. James Harrington, a professor of ceramic and materials engineering...
Lidar System Finds Fault with Trees
DENVER -- Would that Washington state geologists had it as easy as their counterparts in California, where faults, such as the San Andreas, show up in aerial photography as long, deep furrows in the...
light speed
US Air Force Will Improve Space Surveillance System
The US Air Force's ground-based electro-optical deep-space surveillance system is about to get a better outlook. Under a program called Deep Stare, charge-coupled device cameras will replace the system's tube-based cameras. The upgrade, which must take place before 2002 when the tube-based cameras are no longer usable, will provide twice the quantum efficiency so that it will be easier to spot...
Co-Inventor of the Nd:YAG Dies
LeGrand G. Van Uitert, co-inventor of the Nd:YAG laser, died June 3. He retired in 1989 after working as a research chemist and materials scientist at Bell Laboratories in Murray Hill, N.J., for 37...
Competition Heats Up for the Blue Laser Market
The race to corner the market for blue diode lasers recently picked up some new contenders, with the US military funding both company and university research programs. The first blue laser diode with...
Old Crystal Looks for New Growth
MORRISTOWN, N.J. -- There is new competition in the alexandrite laser market. Laser Energetics Inc. of Mercerville, N.J., recently bought the alexandrite laser business -- including patents, lasers...
Precision Optics Firm Wins Small-Business Award
James P. Gormican, president of Composite Optics Inc. of San Diego, accepted the US Small Business Administration's National Small-Business Subcontractor of the Year award for his company, having...
JDS Fitel, Uniphase Complete Match Made in Fiber Optics
SAN JOSE, Calif. -- Call it a done deal. At the end of June, shareholders of Uniphase Corp. and JDS Fitel Inc. of Nepean, Ontario, Canada, gave overwhelming approval to the companies’ merger...
Industry Pays Record Share of US Research Tab
After a long downward trend in research and development funding in the US, an estimated $220.6 billion -- an inflation-adjusted 5.3 percent increase -- was spent in 1998. According to a National...
Laser Program Suspended; Jobs Cut
LIVERMORE, Calif. -- Low unemployment rates in California softened the blow for 547 employees of a Lawrence Livermore National Laboratory uranium enrichment project. The conclusion of the 26-year...
When Growing, Watch Your P’s and Queues
PITTSFIELD, Mass. -- With photonics business leaders forecasting market growth, manufacturers will have their hands full preventing production bottlenecks. Ironically, logjams are more likely as a...
Accent on Applications
Excimer Helps Grow Diamond Thin Films
Diamond’s unique properties make it an ideal, if not fully implemented, solution for many electronics applications. Diamond thin films produced by pulsed laser deposition in a hydrogen environment promise entirely new applications and significant improvements to others. These include transistors that operate much faster and at higher temperatures than those constructed from silicon, as well...
Nd:YAG Improves the Fine Print on Fish Tags
Roughly 50 percent of the salmon issuing from US Pacific Northwest rivers and streams are raised in fish hatcheries; the number is higher in Canada. Once released, these fish often disappear into the...
Fiber Polisher Polishes Performance of Optical Amplifier
Video-on-demand, real-time Internet gaming, telecommuting. The consumer applications that fiber to the home will one day enable admittedly are much sexier than its enabling component technologies....
Presstime Bulletin
Galileo Pares Business Lines
Electronic tube maker Burle Industries Inc. of Lancaster, Pa., has purchased Galileo Corp.’s scientific detector and spectroscopy products business. That includes single-channel and microchannel detectors, fiber optic lightguides and remote spectroscopy products. Galileo of Sturbridge, Mass., previously sold manufacturing assets from a discontinued business to IPG Photonics Corp., also of...
Laser 99 Attracts Global Interest
Visitors from 61 countries descended on the New Munich Trade Fair Center in June to take in the technology of tomorrow. Promoters described Laser 99, held in Munich, Germany, as the "most...
Lucent Acquires SpecTran
Telecommunications giant Lucent Technologies of Murray Hill, N.J., has agreed to purchase specialty optical fiber manufacturer SpecTran Corp. Terms of the deal include a cash transaction of $64...
Construction Begins on Pan-European Fiber Optic Network
London-based i-21 Future Communication has begun building what it says will be Europe’s largest and most ambitious broadband network. Planning to "go live" next May and to have 90 percent of...
Optical Networking System Transmits Data Through the Air
Lucent Technologies has unveiled an optical networking system that transmits voice, data or video signals through the air. The WaveStar OpticAir uses IR lasers, amplifiers and receivers placed on...
Products
LARGE-AREA APDs
The 5X0 windowless series of large-area avalanche photodiodes from Advanced Photonix Inc. is designed to provide maximum collection efficiency by allowing the detector to be placed in direct contact with a scintillator or fiber optic bundle. These devices also enhance performance in the UV and allow direct detection of soft x-rays. The hermetically sealed, compact, all-solid-state devices can...
Advanced Photonix
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COMPACT PHOTODETECTOR
The R7110U-40 hybrid photodetector from Hamamatsu Corp. features a low hysteresis over a spectral response range of 350 to 720 nm. It measures 18 mm high and 20 mm in diameter, has a 5-mm-diameter...
Hamamatsu Corporation
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UV PHOTODIODE
The JEA 2.2 GaP photodiode from Laser Components GmbH comes in a TO-5 can and allows measurement into the UVC region. Suitable for applications such as UV measurement and flame detection, the device...
Laser Components Germany GmbH
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BROADBAND PHOTODIODES
Ortel Corp. has introduced two broadband photodiodes, models 2611A and 2609C, with internal gain designed for use in AM-VSB CATV, QAM 64/256, PON, FTTC and FTTH receivers. Both photodiodes feature...
EMCORE Corp.
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HYBRID FIXED ATTENUATOR
A series of hybrid fixed attenuators from Oz Optics Ltd. all feature a female receptacle on one side and a male connector on the other. The devices have low return loss, can accept up to 200 mW and...
OZ Optics Limited
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DIGITAL IMAGE ACQUISITION
The IMAQ PCI-1424 high-speed image acquisition board from National Instruments can capture large images from digital area- and line-scan cameras at rates up to 200 MB/s. It can acquire color and...
National Instruments Corp.
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COMPRESSION MODULE
The Motion JPEG compression/decompression module for the Matrox Meteor-II series PCI frame grabbers is available from Matrox Imaging. This optional module performs real-time MJPEG compression and...
Matrox Imaging
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FAST GATING CAMERA
Kentech Instruments Ltd. has introduced an intensified CCD camera that combines the capabilities of ultrashort gating times and high repetition rates in a single system. Suitable for imaging...
Kentech Instruments Ltd.
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LINE-SCAN CAMERA
A high-sensitivity line-scan camera using time delay and integration technology is available from Dalsa Inc. The CT-E4-4096W charge-coupled device camera has 4096-pixel horizontal resolution with 24,...
Teledyne DALSA, Machine Vision OEM Components
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3-D STEREO CAMERA
Point Grey Research Inc. has announced improved performance and image quality for its Triclops family of 3-D stereovision cameras. Using the Pentium III processor, the company's MMX-optimized...
Teledyne FLIR Integrated Imaging Solutions
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DEEP-UV MICROSCOPE
The Axiotron UV from Carl Zeiss Jena GmbH is a deep-UV microscope designed for quality control and defect classification of structures smaller than 2 µm. It comes with dry objectives,...
Carl Zeiss Microscopy LLC
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DICING SERVICES
Valley Design Corp. is offering precision dicing services for both R&D and high-volume requirements. The company's saws can handle materials such as silicon wafers, sapphire and quartz discs,...
Valley Design Corp., Headquarters
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CO
2
LASERS
A new series of CO2 lasers is available from Coherent Inc., Laser Group. Based on the company's Diamond family, the K-series has 15 models for users who integrate lasers into their systems and for...
Coherent Inc.
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LASER DIODES
China DaHeng offers high-power fiber-coupled laser diodes for medicine, materials processing, local communications,end-pumped solid-state lasers, soldering, spectroscopy, and research and...
Daheng New Epoch Technology Inc.
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FIBER LASER
Opto Power Corp. has produced a high-power diode laser suited for medical applications, pumping of dual-clad fiber and microchip lasers, and industrial applications such as welding, soldering and...
Opto GmbH
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HIGH-POWER LASER DIODES
Lumex Inc. has released a line of high-power laser diodes that includes a selection of laser emitters in the 650- to 1550-nm range at various power outputs, as well as PIN photodiodes and laser...
Lumex
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300 SERIES DPSS LASERS
Power Technology Inc. announced the release of its new LCS-DTL-300 series of diode-pumped, solid-state laboratory lasers. At 532 nm, the 300 line offers twice the power of the company's LCS-DTL-200...
Power Technology Inc.
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RED LASER DIODE
Coherent Inc., Semiconductor Group's line of laser diodes emit high-power light in red wavelengths. The FAP-B is a continuous-wave, fiber-array packaged bar that produces output of 4 W at 690 nm and...
Coherent Inc.
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TUNABLE DIODE LASER
InterScience Inc. has unveiled a high-speed diode laser that can be tuned in milliseconds to any user-defined sequence of wavelengths within the laser's range. The tuning is performed digitally via a...
InterScience Inc.
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UV LASER
The MPV-355 QS 10 is a 355-nm diode-pumped solid-state laser from Q-Peak Inc. that offers more than 1 W at a 50-kHz pulse rate. This UV laser uses the company's patented Gain Module technology for...
Q-Peak Inc.
CURRENT SOURCES
ILX Lightwave Corp. has unveiled two dual current source modules for its LDC-3916 multichannel laser diode controller. The LDC-3916332 module has two independent laser diode current sources, each...
Newport - ILX Lightwave, Photonics
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TELECOM DEVICE
Vitesse Semiconductor Corp. has developed a 3.3-V multirate SONET/SDH clock and data recovery unit that complies with Bellcore GR-253 specifications for jitter generation, tolerance and transfer. The...
Vitesse Semiconductor Corp.
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OPTICAL DOMES
Meller Optics Inc. offers custom-engineered optical domes for protecting detectors and sensors from water, chemicals, debris and corrosive materials. The domes feature viewing angles to 160° and...
Meller Optics Inc.
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MICRO-OPTICS
Bern Optics Inc.'s line of custom micro-optics now includes micro- prisms and plano, spherical and cylindrical components with dimensions as small as 0.12 mm. The company has also added concave,...
Bern Optics Inc.
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POLISHING SYSTEM
Krell Technologies Inc.'s SpecMaster II has a universal work holder that can polish 12 optical connectors simultaneously. It supports standard connector types and also is compatible with MT and MT-RJ...
KrellTech
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REFLECTOR OPTICS
Breault Research Organization (BRO) has released its ReflectorCAD software for designing reflector optics. The program uses tailored reflector patches to reduce the design time. Users create a base...
Breault Research Organization Inc.
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UHV WINDOWS
Bomco Inc. has developed ultrahigh-vacuum (UHV) windows that enable the use of optical pyrometry, ellipsometry, light scattering and reflectance-difference spectroscopy to obtain data in real time...
Bomco Inc.
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MOTION PROCESSORS
The Navigator MC2300 series is the second release of Performance Motion Devices Inc.'s family of highly integrated chip-based technology for controlling multiple motor types. This series of multiaxis...
Performance Motion Devices Inc.
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COMPACT SERVOMOTOR
Aerotech Inc. has unveiled its BLMUC series of direct-drive brushless linear servomotors, which consist of two noncontacting parts: a moving forcer coil and U-channel rare-earth magnet track. These...
Aerotech Inc.
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VIBRATION ISOLATION
Kinetic Systems Inc. has unveiled the 9102 QC series vibration isolation workstations for use on the production floor. The table features a 48-in.-high plastic glass enclosure with double front doors...
Kinetic Systems Inc.
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LAMP MEASUREMENT
Labsphere Inc. has introduced a variety of lamp measurement systems from integrating sphere photometers to fully integrated lamp test stations. The systems are designed for spectral or photopic lamp...
Labsphere Inc.
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MINI AUTOCORRELATOR
The Micro from APE GmbH is a miniature autocorrelator for pure femtosecond applications. It measures 62 x 80 x 45 mm and can be integrated into other instruments. This autocorrelator offers simple...
APE Angewandte Physik & Elektronik GmbH
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MINI SPECTROMETER
The S1024DW deep-well miniature fiber optic spectrometer from Ocean Optics Inc. is for applications that require high signal-to-noise-ratio measurements, such as thin-film analysis, tablet...
Ocean Optics - Part of Ocean Insight
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