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Photonics Spectra - September 1999
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Issue Library
Features
Abject About Aberration?
Chromatic aberration, spherical aberration and astigmatism induce sweat on the brows of optical designers in many diverse application areas. Avoiding these deviations from "perfect" optical systems is often difficult, but correcting them with aspheres can be expensive or inappropriate. An increasingly interesting option is gradient-index optics. Their progressively changing refractive index can...
Adventures in Drug Discovery
With billions of dollars at stake, pharmaceutical companies go to exotic lengths to find the cures for what ails us. And photonics goes with them. In the film Medicine Man, Sean Connery lived in a...
Keep Your Photonics in Line
Communications network engineers have found polarization-maintaining fiber to be a finicky but necessary technology for coherent transmission systems. Advanced splicing tools can help tame the beast....
The Tribulations of Trials
It’s human nature to try to thwart a double-blind clinical trial of a new drug: Am I taking the real drug or a placebo? A pharmaceutical company is investigating ways of using photonics to...
Virtual Rays Enlighten Lamp Designs
To most engineers, light-emitting diodes (LEDs) seem rather simple, comprising a chip inside a plastic envelope with leads sticking out. When you apply current to one end, light comes out the other...
Tech Pulse
Technique Simplifies 3-D Molecular Research
CAMBRIDGE, Mass. -- Although scientists commonly use far-field polarization microscopy to measure the orientation of single molecules, it was thought that the technology could obtain only two-dimensional information. Now researchers at the Massachusetts Institute of Technology have demonstrated the technology’s ability to measure the 3-D orientation of highly symmetric single chromophores....
Array Speeds Protein, DNA Analysis
EDMONTON, Alberta, Canada -- Researchers at the University of Alberta have developed a capillary electrophoresis system that can significantly speed protein analysis and DNA sequencing. Most...
Atom Detects Photon Without Destroying It
Paris -- Catching light in a box has always been an alluring aspiration. Young children will slam the lid down on a ray of sunlight, hoping to capture its magic glow. The problem is, how do you know...
CMOS Camera Won’t Be Blinded by the Light
Photographers commonly find themselves in situations with too little or too much light. An inability to deal with changing brightness is a weakness of amateur and professional cameras.Cars could use...
Buckyball Emits White Light
Unique C60 atom configurations known as buckyballs have attracted notice for their ability to quench light. Now a team of University of California researchers say they've discovered that buckyballs...
Tetrahedron of Silver Balls Models Chaos of Light Beams
Get your laser pointer ready to create some (legal) chaos. Using a set of four silvered balls, each 12 inches in diameter, put three of the balls in a triangular pattern and add the fourth to the top...
Chemical Laser Advances
CHAMPAIGN, Ill. -- Researchers at the University of Illinois have brought the chemical oxygen-iodine laser closer to the industrial market. A redesigned nozzle and nitrogen instead of helium as the...
Optical Cross-Connect Reduces Loss
When your office phone rings indicating an outside call, chances are the signal passed through an electronic switch somewhere in the building -- even if the incoming signal came off an optical fiber...
’Dark Beams’ Revealed
Researchers have tried to demystify the presence of "dark beams," complex arrays that result from emissions of broad-area vertical-cavity surface-emitting lasers. A team from Haifa University in...
Laser Scans Circuits for Flaws
Researchers at Sandia National Laboratories have designed a method to fault-test integrated circuits quickly from the back using a laser. Light-induced voltage alteration scans a laser over a chip...
Grating May Improve Spectrometers
Spectrometer manufacturers seeking to reduce the size and cost of their instruments may benefit from an innovation utilizing microelectromechanical systems technology. InterScience Inc. has developed...
Laser Evaporation Yields Nanosize Particles
Using a transverse-flow 4-kW CO2 laser, a group of scientists from F.-Schiller University in Jena, Germany, produced nanosize zirconia particles. The particles are prized for their extremely small...
Laser Maps Mars Topography Five Meters at a Time
After more than 120 million measurements, the Mars Global Survey Spacecraft has given researchers more information on the topography of Mars than is known about Earth. The data -- gathered by the...
Combined Spectroscopies Simplify Oil Detection
ERLANGEN, Germany -- Mineral oils and fuels keep the world going, but they may also severely contaminate the ground and water. Laser-induced fluorescence spectroscopy has become a reliable tool for...
Laser Yields Real-Time Glimpse of Water Molecules
PARIS -- Using a homemade ultrafast laser, researchers have tinkered with liquid water molecules to achieve real-time observation of atoms flirting. Teams from the Centre National de la Recherche...
Underwater Sensor Needs No Calibration
Researchers at the University of Montana have developed an autonomous chemical sensor that can be used in long-term studies of CO2 dynamics within bodies of water.Unlike most sensors, the fiber...
Slow It Down
For the second time in six months, a team of researchers has succeeded in slowing laser light to a sluggish pace. Michael Kash and his colleagues at Texas A&M University in College Station heated a...
Light Scattering Measures Subangstrom Roughness
PORTLAND, Ore. -- Hard disk drive manufacturers are looking for ways to increase storage capacity on the same hard drive. One way to accomplish this is to manufacture disks with ultrasmooth surfaces,...
Superconductor ’Eyes’ IR Wavelengths
A superconducting device that detects individual photons at longer wavelengths than was previously possible could have a far-reaching impact on advances in telecommunications and IR astronomy....
light speed
Israeli Defense Firms Agree to Merge
HAIFA, Israel -- Elbit Systems Ltd., which makes military command and control systems, has agreed in principle to merge with Elop Electro-Optics Industries Ltd. of Rehovot, another military equipment...
Free-Space Market Broadens
MURRAY HILL, N.J. -- Lucent Technologies has combined free-space optical communications with dense wavelength division multiplexing technology in a new, high bandwidth, point-to-point commercial...
First, Give Me the Good News
CLEVELAND -- A new business school study proposes that e-mail may be changing our behavior in ways we are not even aware of. We may be getting down to more straight talk. Yes, that’s right. The...
Acquisitions Drive High-Speed Growth
PITTSFIELD, Mass. -- Making acquisitions is a key path to faster business growth, according to a new PricewaterhouseCoopers survey of top executives in photonics and other high-tech industries....
Is US Industrial Growth in Jeopardy?
A report from the National Research Council’s Board on Science, Technology and Economic Policy has identified trends in research investment that could spell trouble for industrial growth in the...
US to Improve Reporting of Laser Sales
WASHINGTON -- The US Department of Commerce has agreed to adopt new categories for tracking laser sales as part of its North American Industrial Classification System. Beginning in January 2000, the...
Industrial Laser Shipments Slide
Industrial laser shipments dropped 10 percent for the first quarter of 1999, despite the increased popularity of CO2 laser systems for cutting applications, according to statistics compiled by the...
Shareholder Issues Complaint over Thermo Vision Merger
A Thermo Vision Corp. shareholder has issued a complaint against the planned merger of the company and its parent, Thermo Instrument Systems Inc. In early July, Thermo Vision’s board of...
Court Upholds Verdict Against GSI
The US District Court for the Northern District of California has denied a request by General Scanning Inc. for a new trial concerning a patent infringement dispute with Electro Scientific Industries...
Bio-Rad Levels Charges Against Zeiss
A dispute over rights to multiphoton fluorescence excitation has emerged between Carl Zeiss GmbH of Jena, Germany, and Bio-Rad Laboratories Inc. in Hertfordshire, UK. Bio-Rad says it signed a...
Accent on Applications
Achromatic Retarder Shows Its Colors in Laser Display
Although laser lab jocks might scoff at the comparative simplicity of technology used in laser light shows, the circumstances under which these instruments perform can be described as anything but laboratory conditions. Further, when a laser goes belly-up on the laboratory bench, the researcher doesn't have to contend with a stadium full of agitated spectators. Designers at Lighting Systems...
Fiber Optics Monitors Emergency Systems
To help guarantee the reliability of its emergency power system, San Jose International Airport in California is using a fiber optic network to monitor its backup generators. More than 10 million...
High-Speed Camera System Takes Its Toll on Violators
Motorists traversing the Golden Gate Bridge to San Francisco may take comfort in knowing that the structure has endured the 1989 Loma Prieta earthquake, scouring ebb tides and the passage of nearly...
Presstime Bulletin
Center for Adaptive Optics to Be Established
For the first time in eight years, the National Science Board has approved another series of National Science Foundation Science and Technology Centers, including a facility for the study of adaptive...
Call for Congressional Fellows
The Optical Society of America (OSA) and the Materials Research Society (MRS) invite applications for the Congressional Science and Engineering Fellowship, a one-year position to begin Sept. 1, 2000....
NSF Grants Interdisciplinary Awards
The National Science Foundation announced grants to 21 institutions under its Integrative Graduate Education and Research Training program, now in its second year. The awards, which will total $54.5...
PRC Acquires Lee Laser
PRC Laser of Landing, N.J., has acquired Lee Laser Inc., the Orlando, Fla.-based OEM supplier of lamp- and diode-pumped Nd:YAG lasers. PRC, which manufactures high-power CO2 industrial lasers, hopes...
Semiconductor Industry Shows Signs of Recovery
Semiconductor Equipment and Materials International of Mountain View, Calif., reported a preliminary June 1999 book-to-bill ratio of 1.24 for North American-based manufacturers of semiconductor...
Companies Develop Dense WDM Submarine Modules
SDL Inc. of San Jose, Calif., and Alcatel Optronics of Nozay, France, have produced a high-performance grating-stabilized 980-nm pump module for undersea communications networks. The device, the...
Products
FAST FOURIER TRANSFORM CCDs
Hamamatsu Corp. has introduced two series of back-thinned fast Fourier transform charge-coupled devices designed for scientific applications requiring detection of low light levels. The S7170-0909...
Hamamatsu Corporation
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OPTICAL SPECTROGRAPH
Verity Instruments Inc. has introduced its SD1024 spectrograph for low-exposed-area endpoint detection, plasma diagnostics and advanced process control applications. It provides continuous monitoring...
Verity Instruments Inc.
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POLARIZATION CONTROLLER
General Photonics Corp. has added two scales to its PolaRite polarization controllers to help researchers and engineers who must frequently adjust polarization settings remember where their previous...
General Photonics Corp.
OPTICAL TRANSPORT
The MultiWave CoreStream is Ciena Corp.'s next generation of dense WDM optical transport systems designed to enable carriers to expand to up to 2 Tb of transport capacity. Its modular architecture...
Ciena Corp.
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COLOR ANALYSIS
Wintriss Engineering Corp. says its SpectraCam color analysis system can resolve a near-infinite number of colors. The system comprises a prism-to-prism spectrometer with the company's Opsis 1300AS...
Wintriss Engineering Corp.
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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 CCD camera has 4096-pixel horizontal resolution with 24, 32, 48, 64 or 96...
Teledyne DALSA, Machine Vision OEM Components
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MACHINE VISION
National Instruments' optical character recognition software for the integrated LabView machine vision, motion control and data acquisition development environment offers high-speed alphanumeric...
National Instruments Corp.
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IMAGE PROCESSOR
InstruTech Corp.'s high-precision image processor can align and view images from multiple video sources simultaneously. The DVP-32 internally accumulates, averages, subtracts, normalizes and computes...
InstruTech
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INSTRUMENT CONTROL
The RS-DAQ instrument controller from C&L Instruments Inc. was designed for use with the multiwavelength dye fluorometer instrument family. The controller supports machine control, pulse counting...
C & L Instruments Inc.
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INTERFACE KIT
Control Development Inc.'s interface kit is designed to accept all of the company's spectrographs. Communications options are PCMCIA Type II for connecting to a laptop, or ISA or PCI for connecting...
Control Development Inc.
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MOTION PROCESSOR
The Navigator MC2400 series of microstepping motion processors from Performance Motion Devices Inc. is available in one-, two- and four-axis configurations, each axis maintaining the encoder position...
Performance Motion Devices Inc.
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CURRENT SOURCE
ILX Lightwave Corp. has introduced the LDX-3220 precision current source, a high-performance laboratory instrument. Besides the company's standard protection features, the LDX-3220 offers adjustable...
Newport - ILX Lightwave, Photonics
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LASER ARRAYS
Coherent Inc., Semiconductor Group, has unveiled a line of conduction-cooled, high-packing-density quasi-continuous-wave (QCW) stacked arrays. The QCW line has wavelength ranges of 780 to 840 nm and...
Coherent Inc.
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DIODE LASER
Laserline GmbH's 6-kW diode laser can focus its 6000 W on a focal spot of 0.7 x 3.5 mm2. The new beam shape and short-focal-length optics have made possible a maximum power density of up to 106 W/cm2...
Laserline GmbH
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DIODE LASER
Opto Power Corp. has introduced a high-power single-emitter diode laser coupled to a 60-µm optical fiber. Designated the H02-A001-830-FC/60, it features a small core fiber with an NA of 0.22...
Opto GmbH
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RS LASER MODULE
An RS Laser Module featuring quasi-collimating optics, a complete single encapsulated unit, and constant optical output power is available from Power Technology Inc. The company reports that it...
Power Technology Inc.
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GALLIUM NITRIDE LED
Industrial Fiber Optics has added a high-efficiency GaN green 530-nm LED to its fiber optic component offerings. The IF-E93 LED produces 100 µW from the end of a 10-cmlong, 1000-µm...
Industrial Fiber Optics Inc.
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ILLUMINATION SYSTEMS
Prior Scientific Inc.'s new line of illumination systems for microscopy and other optical applications includes two illuminators and a ringlight. The CL20, a 20-W fiber optic illuminator, provides a...
Prior Scientific Inc.
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SAPPHIRE, RUBY BALLS
Meller Optics Inc. has introduced a line of sapphire and ruby balls in 42 sizes, both inch and metric, ranging from 0.005 in. (0.127 mm) to 0.5 in. (12.7 mm) in diameter. Designed for use as lenses...
Meller Optics Inc.
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LENS KITS
Laser Components GmbH is offering a wide range of planoconcave and planoconvex lenses in BK 7, fused silica and sapphire in kits specified by the customer. Delivered in any combination in a ring...
Laser Components Germany GmbH
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DESIGN SOFTWARE
LightTools 2.1.0 is the latest version of the illumination design and analysis software from Optical Research Associates. New features include polarization ray tracing capabilities, the ability to...
Synopsys Inc., Optical Solutions Group
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POSITIONING SYSTEM
The Mipos 3 from piezosystem jena is designed for fine adjustment of high-resolution microscope lenses, with a 100-µm maximum adjustment. An integrated preload design provides small angular...
piezosystem jena GmbH
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DEEP-UV INSPECTION SYSTEM
Nikon Inc. has introduced an inspection system for semiconductor and optical storage media manufacturing. Fab operators can observe and analyze lines and spaces with widths down to 0.1 µm with...
Nikon Instruments Inc.
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DENSE WDM TESTING
The Q8163 optical polarization scrambler was designed to help dense WDM system designers characterize polarization-dependent loss. Developed by Advantest and available from Tektronix Inc., the device...
Tektronix Inc.
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LIGHT MEASUREMENT
Enhanced software for the model 940D computerized photometric range system from Gamma Scientific Inc. allows characterization of retroreflective materials and light sources. The software features a...
Gamma Scientific
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POWER MONITOR
EigenLight Corp.'s series 400 WDM power monitor attenuators provide a spectrally flat response from 1520 to 1620 nm, so measurements can be made on any WDM channel without adjusting for sensitivity...
EigenLight Corp. (See NeoPhotonics Corp.)
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