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Lasers News
American Blue Diode Laser Pulses Atop Silicon Carbide Substrate
Jul 1, 1997 — DURHAM, N.C. -- Cree Research Inc. has demonstrated a pulsed blue semiconductor diode laser that operates at room temperature -- a first step in a race for a commercial device that would greatly increase optical storage capacity.The company's 403-nm laser is based on a silicon carbide (SiC) substrate and a gallium nitride (GaN) lasing medium. Nichia Chemical Industries of Anan, Japan, demonstrated a GaN diode laser in 1995, but Cree officials believe their device is the first GaN laser built on...
CLEO Attendance Falls
Jul 1, 1997 — CLEO '97 (Conference on Lasers and Electro-Optics) held in Baltimore failed to attract as many attendees as it did last year. There were 6644 total attendees this year compared with 6936 for the previous conference in Anaheim, Calif. Of all...
Giant Robots Build Airplanes with the Aid of Laser Tracking
Jul 1, 1997 — Juggling takes skill and focus. Imagine, then, juggling sections of airplanes that weigh 100,000 lb and that must be matched to within thousandths of an inch.That was the situation Ed Chalupa and two fellow engineers faced when in 1993 they formed...
Laser Ultrasonics Drive the Nondestructive Testing Market
Jul 1, 1997 — Laser-based systems will drive ultrasonic testing to the forefront of the nondestructive testing (NDT) market, says an analysis of the US NDT market released by Maxtech International. The systems are designed to test composite aircraft sections and...
Sales Double for Laser, Electro-Optics Companies
Jul 1, 1997 — Total sales have nearly doubled in the last five years for 19 leading companies in the laser and electro-optics industry, according to a report compiled by the Laser and Electro-Optics Manufacturers' Association (LEOMA). In 1992, sales for the 19...
Air Force Lab Chills IR SensorsInternational Team Takes Mid-IR Laser Step
Jun 1, 1997 — Scientists have moved a step closer to achieving a tunable, mid-infrared semiconductor laser, demonstrating an intersubband stimulated emission.A team of researchers from the University of Illinois and the University of Paris conducted tests...
Dutch Group Monitors Laser Deposition
Jun 1, 1997 — Pulsed laser deposition creates complex oxide thin films such as high-Tc superconductors, but it works only under high oxygen pressure (up to 100 Pa). Reflection high energy electron diffraction (RHEED) can monitor the growth of thin films, but only...
Lab Produces Tunable Mid-IR Laser
Jun 1, 1997 — Researchers at Lucent Technologies' Bell Laboratories have produced a pulsed, single-mode laser tunable in the mid-infrared range. The group achieved peak optical powers up to 60 mW at 300 K with a tuning range of about 60 nm from 100 K to 2320...
CLEO '97: R&D Expands Applications
May 1, 1997 — When the Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science (CLEO/QELS '97) kicks off this year, the tens of thousands of attending researchers and developers can be sure of one thing: It’s not just more of the same.In...
Conference Highlights Medical, Entertainment Laser Safety
May 1, 1997 — ORLANDO, Fla. -- A better understanding of the hazards of the surgical laser plume, real-time videos of retinal laser lesions in live animal's eyes and an in-depth examination of endotracheal laser accidents were among the highlights of the Third...
Crane & Co. Receives Exclusive Rights to Spectra Science's LaserPaint
May 1, 1997 — Spectra Science Corp. has licensed LaserPaint, a covert coding and authentication technology, to Crane & Co. of Dalton, Mass., for use in Crane's next-generation currency and secure documents applications. The technology combines laser dyes and...
Diode Lasers Are at the Heart of Cardiac Monitoring System
May 1, 1997 — CAMBRIDGE, Mass. -- Since 1970, doctors have injected patients with iced saline to measure their hearts' blood output. Periodic injections provide reliable results but do not allow doctors to constantly monitor patients.An infrared irradiating...
Laser-Chilled Atoms Sit for Ultrafast Portrait
May 1, 1997 — Physicists from the University of Michigan recently fired 70-fs pulses from a Ti:sapphire laser to control the random movements of atoms in a potassium-tantalite crystal. The laser was split in two beams, with one arriving at the crystal target a...
NASA to Study Trees With Multibeam Laser
May 1, 1997 — NASA has approved a $59.8 million project to study the distribution of the Earth's forests using a multibeam laser. The study is part of NASA's ambitious Mission to Planet Earth, a multipronged plan to improve the accuracy of geophysical...
Ti:sapphire Laser Amplifier Produces 5 W Average Power
May 1, 1997 — Scientists from Quantronix Corp. and the City University of New York's Center for Advanced Technology have developed a femtosecond Ti:sapphire laser amplifier system that generates an average power output of 5 W. The Titan comprises a regenerative...
Aluminum-Free Diodes Offer Doubled Power Potential
Apr 1, 1997 — Researchers at the University of Wisconsin-Madison and Coherent Inc. have produced diode lasers with aluminum-free active areas, which they expect will operate more reliably than AlGaAs-active diodes and will provide roughly twice the power. Writing...
CLEO/QELS Papers To Highlight New Technologies
Apr 1, 1997 — Organizers of this year's Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEOQELS) say they have received 1490 submissions for technical papers, 14 percent more than last year. Hot topics include a...
High-Power Quantum Cascade Laser Works, Chilled, in the IR
Apr 1, 1997 — Researchers at the University of Houston's Space Vacuum Epitaxy Center and Sandia National Laboratories have developed high-power infrared semiconductor lasers that combine standard diode laser and quantum cascade laser technologies. The research...
Laser Radar Watches the Friendly Skies
Apr 1, 1997 — Rain, fog, high winds and snow are notorious for ruining air travel schedules. Not only do these conditions inhibit the smooth (and tightly scheduled) flow of aircraft, but they add to the air traffic controller’s burden. Laser radar research under...
Researchers Use Lasers To Make Photonic Bandgap Structures
Apr 1, 1997 — Photonic bandgaps are three-dimensional structures that can reflect electromagnetic radiation in a band of frequencies propagating in any direction. Scientists from the Max Planck Institute for Biophysical Chemistry have fabricated such structures...
Team Begins Building Megawatt Airborne Laser
Apr 1, 1997 — The US Air Force has granted approval for construction of the first laser hardware for the $1.1 billion military Airborne Laser system. Boeing, TRW and Lockheed Martin are building the 747-based system, which will use a high-energy chemical oxygen...
Diode Lasers Sing Spectroscopy's Tune
Mar 1, 1997 — Environmental issues such as global warming, ozone depletion and photochemical air pollution have increased concern about how pollutants affect the environment. This has led to an increased emphasis on detecting pollutants, understanding their...
FDA Approves Summit's Ophthalmic Excimer Laser
Mar 1, 1997 — The US Food and Drug Administration (FDA) recently gave Summit Technology Inc. of Waltham, Mass., approval to market the SVS Apex Plus excimer laser system for the treatment of mild to moderate nearsightedness, corneal scars and disorders, and...
Joint Effort Aimed at Outpatient Vascular Lesion Market
Mar 1, 1997 — A strategic alliance between medical-laser manufacturer Laserscope of San Jose, Calif., and Medical Alliance Inc. of Irving, Texas, will focus on marketing Laserscope's Aura laser system for the office-based treatment of vascular lesions. Medical...
Laser-Induced Fluorescence Fires Up Engine Research
Mar 1, 1997 — As the world's sensitivity to environmental pollution increases, it is becoming increasingly important to understanding the overall nature of combustion. They key to this knowledge is precise and detailed measurement of the temperature, distribution...
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