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Lasers News
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 chemical mismatches between sapphire substrates and gallium nitride active layers. A better solution would be to have a substrate with a similar crystalline structure, said Leo Schowalter, chairman of the institute's physics department . Glen Slack...
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...
Ring Laser Measures Earth's Rotation
Dec 1, 1997 — CHRISTCHURCH, New Zealand -- In an underground cave, deep within the Cashmere peninsula, the musical note E-flat has taken on special meaning. Researchers from the University of Canterbury have installed a giant ring gyroscope to keep track of...
Sony Puts Blue-Green Laser to Work
Dec 1, 1997 — Sony has announced an optical disc recording system that employs a blue laser for high-density data storage. The 12-GB model uses a 515-nm blue-green laser unveiled by Sony in January 1996. A high-NA (0.85) lens focuses the beam on a 12-cm optical...
Xerox Makes Colorful Splash with Blue Diode Laser
Dec 1, 1997 — PALO ALTO, Calif. -- A small -- a very small -- spot of color here and there is behind Xerox's development of a blue laser diode. Xerox hopes to use the nitride-based semiconductor technology to create a new line of high-resolution printers. Like...
CO2 Laser Beam Propels Miniature Rocket
Nov 1, 1997 — The Advanced Space Transportation Program has launched a miniature rocket propelled by a ground-based laser beam. Scientists at White Sands Missile Range in New Mexico aimed a 10-kW pulsed CO2 laser at the launch vehicle, raising it seven feet off...
Diode Lasers Light the Way for Automotive Signal Lamps
Nov 1, 1997 — The high brightness and directionality of laser light allow for the design of a new class of ultrathin, uniquely styled automotive tail lamps. These and other diode laser characteristics have driven the design of thin-sheet plastic optics. Halogen,...
FDA Bill Puts Laser Devices on Fast Track
Nov 1, 1997 — WASHINGTON -- Legislation that would help new laser medical devices reach the marketplace faster was overwhelmingly approved by the US Senate this fall. The bill, which also addresses federal approval of new drugs, is still pending in Congress. The...
German Firm Earmarks $1.3 Million for Microlasers
Nov 1, 1997 — As part of a continuing collaboration, German-based Laser Display Technologie KG has agreed to provide an additional $1.3 million in funding to Laser Power Corp. to develop microlasers for use in Laser Display's laser-based projection display...
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May 2024
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