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Perkins Precision Developments - Custom HEL Mirrors Static LB 8/24
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Research & Technology News

Optics Firm, NASA Produce Lightweight Mirror for Space Telescope
Nov 1, 2000 — San Diego-based Composite Optics Inc. has announced that it has completed construction and testing of a 2-m prototype mirror for the European Space Agency’s Far-Infrared and Submillimeter Space Telescope. The mirror, which was fabricated from a carbon fiber reinforced polymer composite, weighs 77 pounds. The prototype was developed in collaboration with NASA’s Jet Propulsion Laboratory of Pasadena, Calif. The telescope structure will feature a 3.5-m mirror with a surface...
Organic Lasers Go Electric
MURRAY HILL, N.J. -- MURRAY HILL, N.J. -- Physicists at Lucent Technologies Inc.’s Bell Labs have developed the first electrically driven organic semiconductor laser. Constructed of crystalline tetracene, a molecule that comprises four benzene molecules, the...
Pulse-Shaping Yields Efficient X-ray Generation
Nov 1, 2000 — An international group of scientists has found that controlling the shape of laser pulses improves soft x-ray generation by nearly an order of magnitude. The technique incorporates a feedback loop to control the shape of the 800-nm pulses from a...
Quantum-Well Infrared Photodetector Works
Nov 1, 2000 — A research team from Georgia State University in Atlanta, the National Research Council’s Institute for Microstructural Sciences in Ottawa and Cornell University in Ithaca, N.Y., has produced a GaAs/InGaAs quantum-well infrared photodetector...
Shack-Hartmann Challenges Interferometry
Nov 1, 2000 — A team of researchers at Lawrence Livermore National Laboratory in Livermore, Calif., has determined that Shack-Hartmann wavefront sensors offer sufficient sensitivity to replace phase-shifting interferometers for the characterization of large...
Silver Fiber Transmits IR Images
Nov 1, 2000 — TEL AVIV, Israel -- Scientists at Tel Aviv University are developing an infrared endoscopy technique that employs bundles of silver-halide fibers. Infrared endoscopy could detect cancerous tumors or monitor laser surgery and may find a place in...
Simple Device Measures Film Thickness
CHAMPAIGN, Ill. -- CHAMPAIGN, Ill. -- Film thickness between a liquid-vapor interface can reveal much about the performance of a fluid-mechanical system. The thickness of liquid refrigerant film on the interior wall of a tube can help determine heat transfer into and...
Smart Cameras Have Their Eye on Crime
COLLEGE STATION, Texas -- COLLEGE STATION, Texas -- Don’t look now, but Big Brother is just around the corner, say researchers at Texas A&M University. No, not the reality TV program, but automated surveillance cameras that can track people in train stations, the...
Spy Photos Spot Invasion
LAS CRUCES, N.M. -- LAS CRUCES, N.M. -- Spy satellite photographs have documented a desert invasion. But don’t stockpile food and water in some survivalist’s bomb shelter just yet. This invasion consists of desert plants that have converted parts of the...
Waveguides Show No Diffraction
Nov 1, 2000 — Researchers from The Weizmann Institute of Science in Rehovot, Israel, and the University of Glasgow in the UK reported in the Aug. 28 issue of Physical Review Letters that they have developed a technique to engineer the diffraction properties of...
X-Rays Mark the Spot for Mines
PALE, Bosnia -- PALE, Bosnia -- Finding land mines is slow, tedious and dangerous. Because today’s mines are mostly plastic, metal detectors cannot find them. The most reliable detection method requires "de-miners" to get on their hands and knees to probe the...
Zeiss Building Giant Laser Gyro
Nov 1, 2000 — Carl Zeiss of Oberkochen, Germany, has taken an important step in the completion of a mammoth ring laser gyroscope with the delivery and installation of the 10-ton, 4.25-m Zerodur disc that is the centerpiece of the instrument. The gyroscope, which...
1.3-µm VCSEL Produced for Telecommunications
Oct 1, 2000 — Nova Crystals Inc., located in San Jose, Calif., has developed a 1-mW, 1.3-µm vertical-cavity surface-emitting laser (VCSEL) for use in optical data and telecommunications networks. The InP devices are plug-compatible with SONET/SDH modules...
Alcohol Helps Astronomers Date Stars
LEIDEN, Netherlands -- LEIDEN, Netherlands -- Many of us have probably harbored fantasies of dating a star, perhaps at some Hollywood nightspot. Researchers at Leiden Observatory have made their dreams a reality. In an article currently in press at Astronomy and...
Caged Atoms Offer Big Possibilities
OAK RIDGE, Tenn. -- OAK RIDGE, Tenn. -- A technique that traps single atoms for study at room temperature may find applications in dense optical storage media, single-atom lasers and novel detectors. By doping nanocrystals with rare-earth ions, researchers are...
Chromophore Suited to Data Storage
Oct 1, 2000 — Researchers from the University of Cincinnati and the Air Force Research Laboratory at Wright-Patterson Air Force Base in Ohio have announced the results of their study of a fluorine-based chromophore that may find applications in high-density...
Cluster Carries Los Alamos Spectrometers
Oct 1, 2000 — The second pair of satellites in the European Space Agency’s Cluster II mission were successfully launched Aug. 9, bringing with them imaging electron spectrometers developed at Los Alamos National Laboratory in New Mexico. Over their two-year...
Corning Ships Mirror Blank to Chilean Observatory
Oct 1, 2000 — Corning Inc. of Corning, N.Y., has announced that it has shipped the 4.3-m primary mirror blank to the Southern Observatory for Astronomical Research at Cerro Pachón in Chile. Constructed of ultralow-expansion glass, the monolithic blank...
Corning Updates Bandwidth Specification
Oct 1, 2000 — Corning Inc. of Corning, N.Y., has announced that it will use the restricted mode launch bandwidth measurement specification on its InfiniCor 300 and InfiniCor CL 1000 multimode fiber for 850-nm laser operation. The standard is the result of work by...
DoE Labs Demonstrate Free-Electron Laser
Oct 1, 2000 — Scientists from the US Department of Energy’s (DoE) Brookhaven National Laboratory in Upton, N.Y., and Argonne National Laboratory in Argonne, Ill., have demonstrated a high-gain harmonic-generation free-electron laser. They hope it will lead...
Electron Pairs ’Dance’ in Laser Field
FREIBURG, Germany -- FREIBURG, Germany -- Researchers have again advanced our understanding of laser ionization with the observation of correlated momenta in electron pairs that are liberated from their atoms. The finding further supports the rescattering theory, which...
Faster Than Light? Well …
PRINCETON, N.J. -- PRINCETON, N.J. -- The dreams of warp drive and faster-than-light communications will have to remain just that. According to the scientists who have demonstrated superluminal group velocity, the reports of the death of special relativity have been...
Fibers Talk, Lock, Make High-Brightness Laser
WATERFORD, Conn. -- WATERFORD, Conn. -- For at least 30 years, researchers have attempted to combine the light from several separate, low-power semiconductor laser beams to produce a single high-quality, high-brightness beam. But getting the beams to lock phases...
Instrument Characterizes Colloids
ALBUQUERQUE, N.M. -- ALBUQUERQUE, N.M. -- Researchers at Los Alamos National Laboratory have developed a system that characterizes the properties and behavior of colloids. Originally developed to analyze particulate pollution in the environment, especially radioactive...
LaserChip Validation Completed
Oct 1, 2000 — Spectra Science Corp. of Providence, R.I., and Glaxo Wellcome Inc. of Research Triangle Park, N.C., have completed a preliminary evaluation of Spectra Science’s LaserChip combinatorial chemistry technology. LaserChips are smart bead supports...

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