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Research & Technology News

White-Light Device Measures Warpage of Printed Circuit Boards

Jan 1, 1997 — ATLANTA -- A new technique using a broadband white-light source will enable electronics manufacturers to measure the warpage of a printed circuit board design before it goes into mass production, according to scientists at the Georgia Institute of Technology who developed the process.Led by Georgia Tech's Charles Ume, researchers incorporated the technology into a device called the TherMoiré. Electronic Packaging Services Ltd., Co. of Atlanta uses it to monitor design and manufacturing...

Art and Science Collide

Dec 1, 1996 — MELVILLE, N.Y. -- This colorful image of a dogfish placoid scale was among the top 10 entered in the 22nd annual Nikon International Small World Competition. David K. Terbush of the George Washington University Medical Center in Washington magnified...

Coherent Ships Glaucoma-Treating Lasers Overseas

Dec 1, 1996 — Coherent Inc. of Santa Clara, Calif., announced that it will begin shipment outside the US of a medical laser used in primary open-angle glaucoma treatment. The company designed its Selecta 7000 specifically to perform selective laser...

Data Cards to Combine Optical, Microchip Capabilities for PC Interface

Dec 1, 1996 — Prototype hybrid smart/optical data cards from Drexler Technology Corp. of Mountain View, Calif., will link microchip cards to personal computers using Microsoft and Hewlett-Packard interface specifications. Drexler said it will put a microchip and...

Dutch Claim Lead in Fiber Tests

Dec 1, 1996 — EINDHOVEN, The Netherlands --Heroes are back. A standard feature of the fiber optic scene in the 1980s, so-called hero experiments, in which researchers vie for records in terms of bits times kilometers of transmission, faded away in the push for...

Europeans Issue Report on Diffractive Optics Technology

Dec 1, 1996 — JENA, Germany -- The development of a step-by-step fabrication process for diffractive optical elements was announced in the final report of a European research alliance concerned with discoveries and applications in the field. The partnership,...

IBM Laser Scientist-Sleuths Solve an Old Astronomy Mystery

Dec 1, 1996 — YORKTOWN HEIGHTS, N.Y. -- Two IBM scientists, calling on their years of expertise in lasers, believe they have solved the missing starlight mystery -- a.k.a. the diffuse interstellar bands, or DIBs. Astronomers have long known that light from...

Laser Welding Technology to Put Kewaunee Power Plant Back On-Line

Dec 1, 1996 — KEWAUNEE, Wis. -- Throughout the nuclear power industry, steam generators have met their enemy, and its name is corrosion. Now, a new laser welding technology may prove to be the saving grace of corroded steam generator tubes in general and for the...

Nearing the End of the Road

Dec 1, 1996 — MAINZ, Germany -- The fourth and final glass/ceramic mirror substrate for the Very Large Telescope has been sent from Schott Glaswerke to R.E.O.S.C. near Paris for final finishing. Each of the 8.2-m mirrors took 23 months to complete and will be in...

New ATM-Switching Technology Boasts Trillion-Bit Network Potential

Dec 1, 1996 — Scientists at Lucent Technologies/Bell Labs have demonstrated a switching technology that they say will allow communications networks to control 1 trillion bits of information simultaneously; network systems now handle up to 20 Gb/s. The prototype...

Sensor Company to Develop Image-Enhancement Processor for US Air Force

Dec 1, 1996 — Irvine Sensors Corp. of Costa Mesa, Calif., is developing an electronic image-enhancement processor for the US Air Force's Wright Laboratory Avionics Directorate. The processor will be part of an add-in board for the lab's 50-billion operations per...

Shattered Beamlet Lens Blamed on Timing Error

Dec 1, 1996 — LIVERMORE, Calif. -- A high-power experiment on Lawrence Livermore National Laboratory's Beamlet laser destroyed one of the setup's lenses and damaged another. No injuries were reported, but officials say that the September incident caused $70,000...

Three Lidars Team Up to Probe the Atmosphere

Dec 1, 1996 — CHAMPAIGN, Ill. -- In a joint optical remote-sensing program, scientists from the National Center for Atmospheric Research (NCAR) Atmospheric Technology Div. and the National Oceanic and Atmospheric Administration (NOAA) Environmental Technology...

Toshiba Develops Blue-Purple Laser for Next-Generation Digital Storage

Dec 1, 1996 — Scientists at Toshiba Corp. have generated 417-nm pulses using a GaN semiconductor laser powered at room temperature. The company's metallorganic chemical vapor deposition technique made the development possible by controlling the phase boundary of...

US Air Force, Utah State University to Make Cheaper Satellite Communications

Dec 1, 1996 — Developing a lightweight, inexpensive satellite laser communications system is the goal of an educational partnership agreement between the US Air Force's Phillips Laboratory and Utah State University. Researchers will build and test a low-power...

'Artificial Nose' Uses Fiber Optics to Emulate the Real Thing

Nov 1, 1996 — MEDFORD, Mass. -- One of the most complex sensors of all -- the human nose -- is the inspiration for a fiber optic sensor that can detect and differentiate chemical vapors better than commercial electronic chemical-detecting devices. "Commercial...

British Aerospace Society Publishes Report on Photonics in Avionics

Nov 1, 1996 — A report titled "Applications of Photonics in Avionics: Statement of Anticipated Requirements" and offered by the Society of British Aerospace Companies provides an overview of prospective avionics requirements for photonics technology to university...

Conductus Inc., Standards Agency Join to Design Superconducting Bolometer

Nov 1, 1996 — Conductus Inc. of Sunnyvale, Calif., and the National Institute of Standards and Technology have developed an ultrasensitive high-temperature superconducting bolometer for infrared imaging applications. The device, designed under a cooperative...

Department of Energy Eyes Nanocrystal Implants for Better Displays

Nov 1, 1996 — Scientists at the US Department of Energy's Oak Ridge National Laboratory have demonstrated the ability to implant high concentrations of metallic and semiconductor nanocrystals in surface layers of glass, silica and other materials. The...

Lobsters Serve as Inspiration for X-Ray Lithography Technology

Nov 1, 1996 — STURBRIDGE, Mass. -- A new lens design originally created for applications in astronomy, and based on the eye structure of a lobster, holds promise in the etching of ultrasmall electronic components on a chip. Nova Scientific Inc. and a team from...

NASA to Test Image Radiometer for Cloud Measurement

Nov 1, 1996 — GREENBELT, Md. -- NASA's Goddard Space Flight Center has taken delivery of an uncooled, multispectral infrared imaging system -- called the first of its kind by its builder, Space Instruments Inc. of Encinitas, Calif. The imager, called the Infrared...

New Semiconductor Materials Yield Broadband Amplifier Fiber

Nov 1, 1996 — SYRACUSE, N.Y. -- A new fabrication technique has created cylindrical optical fibers that promise to enable small broadband optical amplifiers for use in communications networks, according to university researchers who have created the technology...

Process Control System Produces High Laser Yields

Nov 1, 1996 — ENDICOTT, N.Y. -- A novel process-monitoring and -control system has produced excellent semiconductor laser wafer yields, according to the president of a company that has licensed the technology from the US government. Semiconductor Laser...

Research Corporation Technologies Patents Blue Laser Advance

Nov 1, 1996 — Research Corporation Technologies (RCT) has patented a technology developed by scientists at Brown and Purdue universities that the company says will solve a major problem in the development of blue lasers. The technology overcomes the Schottky...

Smooth Plasma Would Improve X-Ray Lasers

LIVERMORE, Calif. — Smoothing the plasma from an x-ray laser amplifier could improve the device's efficiency by up to 50 percent, according to researchers at the Lawrence Livermore National Laboratory. The research team, led by Robert Cauble and Luiz Da Silva, made...

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