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Laser Gyro To Monitor Rotation of the Earth

Feb 1, 1997 — OBERKOCHEN, Germany -- Carl Zeiss has built what it calls the world's largest ring-laser gyro. Designed for measuring the Earth's rotation, the device will be installed in a subterranean cave on the Banks Peninsula in New Zealand early this year. The project was commissioned by the Institute of Applied Geodesy in Frankfurt in cooperation with the Technical University of Munich and is valued at roughly DM 750,000.The gyro's rotational resolution of 1:10,000,000 over long time spans allows highly...

Laser Sensor Monitors Distant Crosswinds

Feb 1, 1997 — ATLANTA -- A laser-based sensor can measure crosswind speeds for applications such as aviation safety and meteorology, Georgia Institute of Technology researchers report.The single-ended, long-path non-Doppler laser wind sensor registers faint wind...

Liquid-Crystal-Based Device Provides Brighter Projection Display

Feb 1, 1997 — A pixel device that uses polymer-dispersed liquid crystals could be the key to improved large-scale projection display, according to scientists at Spectra Science Corp. who developed the technology. The device demonstrated brightness that the...

Lumonics Delivers Nd:YAG Marking System for Use in Japanese Pilot Plant

Feb 1, 1997 — Lumonics Corp. of Oxnard, Calif., has delivered its 300-mm laser marking system to a Japanese silicon supplier. Shin-Etsu Handotni Co. Ltd. is using the WaferMark DSC 300 on its pilot production line to hard mark its 300-mm wafers before etching and...

Polarimeter Eyed for Faster Optical Analysis

Feb 1, 1997 — A new fast-imaging polarimeter under development at Cambridge Research & Instrumentation Inc. will enable users to measure the optical anisotropy of specimens in less than 1 s. The Cambridge, Mass.-based company received a Small Business...

Quantum Dot Lasers Emerge from Semiconductor Rejects

Feb 1, 1997 — OTTAWA -- With an eye toward more powerful and smaller diode lasers, researchers at the National Research Council of Canada in Ottawa recently turned something semiconductor manufacturers consider undesirable into quantum dot lasers capable of...

Research Firm Targets More Efficient, Cheaper Satellite Solar Cells

Feb 1, 1997 — Essential Research Inc. of Cleveland is working on a high-efficiency, radiation-resistant solar cell to provide satellite power. The company plans to grow durable, inexpensive, high-quality indium phosphide solar cells on germanium substrates. The...

Standard Published for Optical Fiber Coating Removal

Feb 1, 1997 — A new standard published by the Telecommunications Industry Association (TIA), titled "Measurements of Strip Force for Mechanically Removing Coatings from Optical Fibers," quantifies the force needed to remove coatings from fibers along the...

Thin-Film Detector Shows High Response, Sensitivity for Radiation Measurement

Feb 1, 1997 — Using off-the-shelf production facilities and standard production methods, researchers working for the Canadian Defense Research Establishment have built a new radiation detector for use in the medical, nuclear and space fields, or wherever...

X-Ray Microcalorimeter Developed for Improved Materials Analysis

Feb 1, 1997 — An x-ray microcalorimeter developed by the National Institute of Standards and Technology could improve materials analysis in the semiconductor industry. The device, compatible with commercially available scanning electron microscopes, can achieve...

Alice's Restaurant at the End of the Universe

Jan 1, 1997 — INNSBRUCK, Austria -- Physicists are approaching a practical application for a remarkable property of photons, something Einstein called "spooky action at a distance." Science recently reported that researchers at the University of Innsbruck...

Chromium-Doped Crystal Shows Near-Infrared Tunability at Room Temperature

Jan 1, 1997 — Scientists at the City University of New York have grown a chromium-doped laser crystal that they say is tunable in the near-infrared spectral range at room temperature. The researchers demonstrated gain-switched, tunable operation of the Cr4...

Fiber Brings 'Live' Response from Ocean Floor

Jan 1, 1997 — TUCKERTON, N.J. -- In a scene that would make Jules Verne happy, scientists at Rutgers University and the Woods Hole Oceanographic Institute have established the first permanent fiber optic link that allows live, two-way communication with...

Firms Look for Partners in Deep-Ultraviolet Lithography Research

Jan 1, 1997 — ASM Lithography of Tempe, Ariz., and IMEC, a research and development organization in Leuven, Belgium, will collaborate on 193-nm-wavelength deep-ultraviolet lithography. The companies will work to develop advanced optical processes that produce...

High-Resolution Technology Opens the Door to New Displays

Jan 1, 1997 — SUNNYVALE, Calif. -- A fundamentally new approach to display technology may revolutionize those alphanumeric readouts on phones, microwaves, pagers and dashboards. In response to increasing demands for higher information content and higher...

Holographic Light-Diffusing Technique Could Improve Flat-Panel Displays

Jan 1, 1997 — A novel holographic light-diffusing technology promises to improve lighting in flat-panel display and specialized flashlight applications. Developed by Physical Optics Corp. of Torrance, Calif., the technique helps shape diffuse light beams by...

Laser Dissection Aids Pathologists, Patients

Jan 1, 1997 — WASHINGTON -- Researchers battling cancer and other debilitating diseases will soon have a new weapon in their arsenal. A technique developed at the National Institutes of Health (NIH) will enable pathologists to assess the molecular behavior of...

MSX Galaxy Maps Yield Highest Resolution

Jan 1, 1997 — The Midcourse Space Experiment (MSX) observatory-class satellite delivered mid-infrared maps of the center of our galaxy with a resolution 15 times better than the previous best taken by the Infrared Astronomical Satellite. The image at left is a...

New High-Rejection Optical Filters Aid in Comet Exploration

Jan 1, 1997 — Scientists at the University of Wisconsin and Acton Research Corp. of Acton, Mass., have developed two high-rejection optical filters for use in NASA's suborbital rocket. NASA will use the filters, which reject VUV and UV rays at 166 nm and 260 nm,...

New Phosphor View Promises Display Advances

Jan 1, 1997 — ALBUQUERQUE, N.M. -- A fresh insight into the nature of phosphors promises brighter, more colorful displays and, ultimately, a challenge to liquid crystals for dominance in the portable display market, say scientists at Sandia National...

Optical Fingerprint Recognition Could Have Applications in Bank, Internet Security

Jan 1, 1997 — GAITHERSBURG, Md. -- Researchers at the National Institute of Standards and Technology (NIST) have combined optical correlation methods and digital neural networks to provide more accurate real-time fingerprinting for financial, credit and Internet...

Russian Laser at Duke University Pumps out UV, Gamma Rays

Jan 1, 1997 — DURHAM, N.C. -- After settling in at Duke University, the Russian free-electron laser (FEL), has been brought to life emitting UV beams. The OK4 optical klystron FEL, developed at the Budker Institute of Nuclear Physics in Novosibirsk, Russia, was...

Summit Technology Wins FDA Approval for Further Clinical Tests

Jan 1, 1997 — Waltham, Mass.-based Summit Technology Inc. will expand clinical trials of its excimer laser system to treat farsightedness, thanks to approval from the US Food and Drug Administration. The trials will test the company's SVS Apex Plus excimer laser...

Two-Photon Therapy Holds Promise as Cancer Treatment

Jan 1, 1997 — OAK RIDGE, Tenn. -- A two-photon laser technique holds the promise of treating deep-tissue cancers such as early-stage breast cancer, say the scientists who developed the technique. Researchers at Oak Ridge National Laboratory employ a mode-locked...

US Commerce Department Revises Directory of Standards Activities

Jan 1, 1997 — The 1996 edition of Standards Activities of Organizations in the United States (SP 806) from the US Commerce Department's National Institute of Standards and Technology summarizes the standards activities of more than 700 organizations. The newly...

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