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Lasers News
Coherent Inc. Fined for Exporting Laser Parts to India
Mar 1, 1998 — The US Commerce Department's Bureau of Export Administration has fined laser manufacturer Coherent Inc. $20,000 for illegally exporting two laser components to a company that is affiliated with India's Atomic Energy Department. The problem stemmed from an earlier sale of complete laser systems to the company, before the Com-merce Department enacted the weapons-control initiative in 1989, requiring licenses to export to companies involved in India's atomic research. The department had sent a...
Environmental Group Targets Lawrence Livermore Superlaser
Mar 1, 1998 — Lawrence Livermore National Laboratory's superlaser has once again come under fire from a coalition of environmentalists and taxpayer groups. Calling itself "Green Scissors," the group listed the National Ignition Facility among 71 federal programs...
Fiber and Laser Unite in Restoration Effort
Mar 1, 1998 — The French, rightfully proud of their architectural heritage, spend about $8.6 million a year on high-technology restoration work, and 20 percent of that money is used to clean historic buildings using environmentally friendly techniques. Cleaning...
Researchers Work on Laser-Cooled Atomic Clock
Mar 1, 1998 — A team of researchers at the National Institute of Standards and Technology is set to begin work on an advanced laser-cooled cesium atomic clock slated to go aboard the international space station. The clock will employ the latest techniques for...
Team Makes Advances in Nitride-Based Blue Laser Diodes
Mar 1, 1998 — Research groups have sought to fabricate nitride-based laser diodes because of their applications in optical storage systems, printing, medical surgery and chemical monitoring. Now a team of scientists from the University of California at Santa...
Terabit Networks Become Reality
Mar 1, 1998 — A flexible, high-power, erbium-doped fiber amplifier technology, optimized planar waveguides and externally modulated lasers form the heart of a new optical network from Lucent Technologies that is capable of transmitting 3.2 Tb/s. At the core...
UN to Ban Lasers in Combat
Mar 1, 1998 — The United Nations has solicited enough countries to sign on to an agreement banning laser weapons in battle. Hungary became the 20th country to ratify a UN accord barring lasers that cause blindness. The agreement prohibits certain conventional...
Crystal Eases Blue Laser Production
Feb 1, 1998 — TROY, N.Y. -- Researchers at Rensselaer Polytechnic Institute have revived a bit of history in time for the first commercial blue-diode lasers. Companies hoping to manufacture blue lasers face several significant obstacles, including structural and...
High-Power Lasers Send Electrons Flying
Feb 1, 1998 — PALAISEAU, France -- Scientists from four French and one British laboratories are using high-energy, short-pulse lasers to observe electron acceleration corresponding to an energy gain of 1.6 MeV in a plasma wave of less than 1 cm. Their technique...
Laser Bursts Strengthen Metal Parts
Feb 1, 1998 — LIVERMORE, Calif. -- A new high-energy "laser peening" process can improve metal parts by sending a shock wave through the metal, inducing compressive stresses that reduce metal fatigue and boost resistance to corrosion. Manufacturers have been...
Microlasers:
Feb 1, 1998 — The progressive replacement of gas lasers and flashlamp-pumped solid-state lasers by more efficient diode-pumped solid-state lasers started in laboratories more than a decade ago. Pumped with a 1-W CW diode laser, passively Q-switched microlasers...
Mid-IR Lasers Offer Advantages
Feb 1, 1998 — Scientists from the Naval Research Laboratory in Washington and Hughes Research Laboratory in Malibu, Calif., reported that a vertical cavity surface-emitting laser (VCSEL) offers a number of advantages over single-mode edge-emitting lasers....
Single-Mode Tunable Laser Backs up Optical Networks
Feb 1, 1998 — KISTA, Sweden -- Researchers have designed a semiconductor laser tunable in the erbium range that could replace more than 40 conventional fixed-wavelength lasers in dense wavelength division multiplex (WDM) systems. The new laser, a grating coupler...
All Solid-State Lasers:
Jan 1, 1998 — All-solid-state sources are comparable to high-power diode lasers with a few notable exceptions: they provide improved mode quality, energy storage for Q-switched applications, mode-locking for ultrashort pulses and alternative wavelengths. Going...
Diode Lasers:
Jan 1, 1998 — For years, scientists have searched for the secret to cheap, compact blue lasers for high-density optical storage. Blue diode lasers' short wavelength offers a small focused spot size, which would maximize the density and transfer rate of stored...
IR diode lasers boost telecom, material industries
Jan 1, 1998 — Improvements to single- and multimode diode lasers have produced devices that are well suited for a diverse set of applications. During the past several years, diode lasers have achieved higher powers and higher reliabilities over an increasingly...
Laser Diodes:
Jan 1, 1998 — The small size, high reliability, excellent beam quality, low price and negligible operating costs of diode lasers have made them today's most popular laser. High power devices promise to replace many other laser types, while enabling more...
Laser Expert Collared in Espionage Case
Jan 1, 1998 — A US physicist who formerly worked for Los Alamos National Laboratory (website) in New Mexico has admitted under a plea bargain agreement to giving defense information that he knew was classified to the Chinese government, officials at the US...
Lasers and Holographic Imaging Team up for Combustion Flow Study
Jan 1, 1998 — Researchers at the Wright Patterson Air Force Base in Dayton, Ohio, are using holography and laser technology in an effort to develop a practical 3-D diagnostic technique for evaluating aircraft combustion flow. In a program jointly funded by the...
Low-Power, Time-Domain Holography Holds Promise
Jan 1, 1998 — MENLO PARK, Calif. -- A recent demonstration of time-domain holography could dispel beliefs that holographic memories need high-power lasers to function. Holographic memories, characterized by ultrahigh storage densities, rapid data transfer rates...
SDL Wins Business Award
Jan 1, 1998 — The US Small Business Administration has presented the Tibbets Award to SDL Inc., a manufacturer of semiconductor lasers and other photonic systems. The award is given to small firms whose technological achievements have had a large economic impact...
Spectra-Physics Lasers Goes Public
Jan 1, 1998 — MOUNTAIN VIEW, Calif. -- Longtime laser innovator Spectra-Physics Lasers Inc. (SPL) last month sold 2.4 million shares of common stock. Revenues estimated at $22.3 million from the sale of stock will be used for general corporate purposes, including...
Airborne Lasers Map Beach Erosion
Dec 1, 1997 — Residents of coastal communities are no strangers to the ravages of hurricanes, and beach erosion is one of the problems these storms leave in their wake. The National Oceanic and Atmospheric Administration's Coastal Services Center, its Aircraft...
Laser Aids Hair Restoration
Dec 1, 1997 — A carbon dioxide laser in combination with a computerized pattern generator creates recipient sites for hair grafts more effectively than traditional methods. That's the finding of Dr. Barry DiBernardo, who presented a paper advocating the use of...
Laser Helps Take Twinkle out of Stargazing
Dec 1, 1997 — LIVERMORE, Calif. -- A laser system that makes a false star glow in the Earth's upper atmosphere will help astronomers study some of the universe's faintest objects. The same phenomenon that makes stars appear to twinkle to ground-based observers...
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May 2024
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