Research & Technology News | Photonics Spectra

Ohara Corp. - Optical Glass, Polish substrates 2024 LB

(9,203 items)

Research & Technology News

Optical Ultrasound Smooths Rough Spots

Nov 1, 1997 — ORSAY, France -- Industries use ultrasound in quality assurance and materials analysis, and a new optical technique may simplify the process for many applications. Noninvasive ultrasound techniques solve problems in the aerospace and automotive industries, detecting mechanical flaws or defects such as cracks, porosity or weaknesses in metal. They also measure the thickness, temperature, microstructure or hardness of materials such as metals, ceramics, composites, opaque polymers and...

Photonics Gives New Life to Old Tune

Nov 1, 1997 — BUENA PARK, Calif. -- The player pianos that were so popular in the early part of this century are making a comeback -- this time with a high-tech twist. Although computerized player pianos that store live performances and play them back note for...

Physicists See Green, Discover Atom's Nucleus Emits Visible Light

Nov 1, 1997 — Atoms routinely emit light when electrons surrounding the nucleus jump to a lower energy level. Energy levels in the nucleus also vary, sometimes by as much as thousands or millions of electron volts. When an excited nucleus relaxes, it usually...

Polarized Light Makes Special Glass Grow

Nov 1, 1997 — CAMBRIDGE, UK -- Science has pursued organic polymers in the quest for light-powered, nano-size switches, motors and pumps. Now, researchers at the University of Cambridge have developed an inorganic glass that expands and contracts in response to...

Researchers Bring Trace Gases to Light

Nov 1, 1997 — A researcher from the University of Leeds in northern England has designed a system that detects trace gases such as methane and other hydrocarbons in the Earth's atmosphere. The system, dubbed FAGE (fluorescence assay by gas expansion),...

Sensors' New Clothes Enhance Efficiency

Nov 1, 1997 — ALBUQUERQUE, N.M. -- A new coating for chemical sensors promises to increase their sensitivity by a factor of 500. The porous coating, developed at Sandia National Laboratories, is less than 1 µm thick, but its extremely high surface area makes...

University of Vermont Incorporates Sensors in State Bridges

Nov 1, 1997 — To monitor the structural health of Vermont's aging bridges, the University of Vermont in Burlington has spearheaded a campaign to equip some bridges with an array of different optical sensors. Campaign to equip some bridges with an array of...

US Navy Uses Acousto-Optic Device to Detect Chemicals

Nov 1, 1997 — An acousto-optic tunable filter instrument worked comparably to a CCD-based monochromator for a recent chemical warfare detection test, according to US military researchers. K. Ewing of the Naval Research Laboratory in Washington explained during a...

Widely Tunable Diode-Pumped Laser Is on the Horizon

Nov 1, 1997 — A group of Lawrence Livermore National Laboratory scientists in Livermore, Calif., has conducted research that could lead to the development of a widely tunable diode-pumped solid-state laser for medical laser systems. The group fabricated...

Cameras Play Traffic Cop

Oct 1, 1997 — TWINSBURG, Ohio -- The next generation of traffic control systems, employing the latest in video imaging and detection, should be operational in a suburb of Akron by midsummer of next year. Unlike traditional stoplights, this "intelligent...

Femtosecond laser offers big benefits

Oct 1, 1997 — NEW ORLEANS -- Picking cotton has gone high-tech, and soon photonics will help processors pick nothing but the best. Scientists at the US Department of Agriculture's Southern Regional Research Center have developed a system that uses near-infrared...

Femtosecond laser offers big benefits

Oct 1, 1997 — CAMBRIDGE, Mass. -- A group of Harvard University researchers has demonstrated a technique for blasting miniature holes in transparent materials that could mean big advances in a number of photonic applications. Though in its initial stages, the...

FORTE Satellite to Record Lightning Strikes

Oct 1, 1997 — The FORTE satellite is orbiting Earth after a successful launch on Aug. 29. The satellite, which is a joint project of Los Alamos National Laboratory and Sandia National Laboratories in New Mexico, will test ways of detecting illegal nuclear weapons...

FTIR Examines Engine Deposits

Oct 1, 1997 — CHESTER, UK -- Collaborators from Queen's University in Kingston, Ontario, Canada, and the Shell Research and Technology Centre Thornton in Chester have combined chemical separation with Fourier transform infrared (FTIR) spectroscopy to examine...

Holographic Reflector Provides Whiter, Brighter LCDs

Oct 1, 1997 — CAMBRIDGE, Mass. -- Scientists at Polaroid Corp. have developed a holographic reflector that promises to make color LCDs whiter and brighter. The secret lies in a transmission hologram that sits behind an LCD and reflects ambient light to produce a...

Laser maker aims at paparazzi

Oct 1, 1997 — MARCOUSSIS, France -- While the world's wrath turned on the paparazzi in the wake of the death of Diana, Princess of Wales, one French laser maker has done something about it. Photographers skulking around hotels or lying in wait to ambush...

Lasers Improve Uranium Enrichment

Oct 1, 1997 — LIVERMORE, Calif. -- Nuclear energy provides about 20 percent of the electricity used in the US, but separating uranium isotopes for power generation has been a power-hungry task itself -- until lasers offered a new method. To fuel nuclear reactors,...

Los Alamos Researchers Use Protons to Photograph Detonation Waves

Oct 1, 1997 — For the first time, scientists have used a technique known as proton radiography to image a dynamic experiment. Researchers at Los Alamos National Laboratory's Neutron Science Center sent a proton beam from a linear accelerator through a special...

MCI Tests Hitachi Telecom Optical Cross-Connect Systems

Oct 1, 1997 — MCI has begun trials of a system from Hitachi Telecom that enables the complex restoration of high-speed transmission routes on optical networks. The MCI-Hitachi application employs five optical cross-connect systems deployed at various nodes in...

Microwaves Take the Red out of Rubies

Oct 1, 1997 — Researchers at Wayne State University in Detroit have used a magnet and a shower of microwaves to reduce the redness of rubies and increase their transparency. Although the method, called electromagnetically induced transparency, already had proved...

NASA Unveils Advanced X-Ray Telescope

Oct 1, 1997 — A team of Eastman Kodak engineers completed its next-generation x-ray telescope for NASA's new Advanced X-Ray Astrophysics Facility. Slated for launch in August 1998, the telescope will be a key component in the space agency's string of space...

NIST Develops Stable Optical Retarder

Oct 1, 1997 — Scientists at the National Institute of Standards and Technology's (NIST) Optoelectronics Div. have developed a stable linear optical retarder for use as a calibration reference. Optical retarders, known as wave plates, are critical for polarization...

Polymer could be key to faster optical switching

Oct 1, 1997 — SALT LAKE CITY -- Researchers have developed a technique that uses a polymer to create an ultrafast, exciton-based optical switch that operates 10 times faster than current technology. Today optical switches apply an electric field to an inorganic...

Raman Spectroscopy Could Simplify Pollution Monitoring

Oct 1, 1997 — COLUMBIA, Mo. -- Power plants must continuously track the amount of carbon monoxide, sulfur dioxide and nitric oxide that emit from their smokestacks. There usually is a separate detection system for each pollutant, but research at the University of...

Researchers Bend X-Rays

Oct 1, 1997 — A pair of Harvard University researchers have discovered a way to manipulate the direction of an x-ray beam, an advance that could someday lead to an improved x-ray laser. Normally, x-rays pass through ordinary optical lenses without bending, but...

<
1
2
3
...
359
360
361
362
363
...
367
368
369
>

January 2025 Subscribe Advertise
Issue Library

CMC Electronics - Advanced Near-Infrared 2024 MR