Hamamatsu Corp. - Photonics West 2026 LB

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Research & Technology News

Gallium-Arsenide Solar Cell Proves Twice as Efficient as Silicon

Nov 1, 1997 — Spectrolab Inc., a unit of Hughes Electronics Corp. of Los Angeles, has developed a gallium-arsenide solar cell that converts almost twice as much of the sun's energy as traditional silicon cells found on spacecraft solar-array panels. The solar cells were put to the test with the August launch of PanAmSat Corp.'s PAS-5, a commercial communications satellite. The satellite uses nearly 15,000 dual-junction gallium-arsenide cells to convert the sun's rays into 10 kW of energy. From Spectrolab...

IR Modeling Proves the Sun's in Hot Water

Nov 1, 1997 — WATERLOO, Ontario, Canada -- By comparing the infrared spectra of sunspots and a simulation of infrared spectra of very hot water, scientists have confirmed that very hot water does indeed exist in sunspots. Fiery eruptions on the sun, captured by...

Laser Neural Network Acts as Computer

Nov 1, 1997 — EINDHOVEN, Netherlands -- An optical processing network that uses the effect of external feedback on the output of a laser diode to control processor responses could prove to be the harbinger of the elusive optical computer. The researchers seek to...

Naval Research Laboratory Scientists Unveil Fiber Optic Beamformer

Nov 1, 1997 — Naval Research Laboratory scientists have developed a beamformer for time-delay steering of a two-dimensional transmitter array. The beamformer is located on a phased array antenna, which resembles a small satellite dish, and distributes microwave...

Optical Fibers Restore Old Records

Nov 1, 1997 — LAUSANNE, Switzerland -- A group of scientists at the Federal Institute of Technology's (EPFL) metrology lab has designed an optical stylus that can play old 78-rpm records that are too fragile or damaged to be played on a traditional record player....

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...

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...

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