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Lasers, Light Sources News
Princeton Develops Organic Laser
Sep 1, 1997 — Researchers at Princeton University in New Jersey have developed a laser from vacuum-deposited organic thin-film materials. Organic lasers have been eyed for years as a possible replacement for inorganic semiconductor diode lasers. Potential advantages of organic materials-based lasers include a wider array of colors, tunability and lower cost. The discovery emerged from research on organic light-emitting diode technology done in conjunction with Universal Display Corp. of Bala Cynwyd, Pa. The...
Silicon Glows With Iron 'Islands'
Sep 1, 1997 — GUILDFORD, UK -- Integrated optical devices are the ultimate application for a 1.54-µm light-emitting diode (LED) structure built in a conventional silicon diode junction. While compound semiconductor LEDs based on gallium arsenide abound, an...
Weapons of War:
Sep 1, 1997 — Military lasers have become the weapons that existed only in science fiction novels a generation ago. From blowing enemy missiles out of the sky to tracking enemy targets, the sheer numbers of laser weapons has prompted a new way of thinking within...
Cardiology:
Aug 1, 1997 — Keyhole" is the buzzword for lasers in cardiovascular surgery, as it is in many other surgical disciplines. Minimally invasive procedures are being cultivated to reduce the injury and healing time for patients, and reduce the cost for insurance...
Fiber Laser Sets a Record
Aug 1, 1997 — MURRAY HILL, N.J. -- A recent demonstration of optical fiber lasers with ultrahigh output powers could have implications for telecommunications, materials processing and medical applications, according to the scientists who developed the technology....
Laser 97 reflects photonics growth
Aug 1, 1997 — MUNICH, Germany -- Photonics has become a more developed industry, and its prospects for additional growth are excellent, said visitors to the Laser 97 trade show and conferences. The June trade fair attracted 14,500 visitors from 67 countries, a...
Laser Probe
Aug 1, 1997 — A joint effort among the US Department of Defense, ITT of Roanoke, Va., and Litton of Tempe, Ariz., resulted in the production of these night-vision goggles for the US Marines.
Lasers Allegedly Blind Pilots
Aug 1, 1997 — The US Federal Aviation Administration is investigating four reports of pilots being temporarily blinded by lasers while flying aircraft in the Los Angeles area. The last reported incident occurred when the pilot of a United Airlines Boeing 737 felt...
Ophthalmology:
Aug 1, 1997 — Lasers have worked in ophthalmology almost since the laser was invented in 1960. Granted, the techniques have changed and new procedures have evolved, but ophthalmological lasers remain among the most widely used of all surgical lasers. Global...
Single-Step QC Laser Emits at 8.5 µm
Aug 1, 1997 — In the latest development in quantum cascade laser research, a group of Northwestern University scientists reported an 8.5-µm emission from quantum cascade lasers grown in a single step by gas-source molecular beam epitaxy. In addition, the...
US Cracks Down on Laser, Chemical Exports Used in Weapons Manufacture
Aug 1, 1997 — The US Department of Commerce has expanded its crackdown on exports beyond nuclear weapons technology to encompass materials for making chemical weapons, including uranium and lasers. Undersecretary William Reinsch said the department has begun...
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...
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...
Researchers Predict Multicolor LED World
Jun 1, 1997 — ROCHESTER, N.Y. -- Dreams of ultrathin displays for computer and television screens could become a reality, thanks to a plastic light-emitting diode that emits light in several colors.LEDs are everywhere; clock radios, microwave timers, dashboard...
Zinc Oxide Holds Promise as LED Material
Jun 1, 1997 — In the quest to produce efficient and lasting blue light-emitting diodes, one material has been largely overlooked -- zinc oxide.Although ZnO has a room-temperature band gap of 3.37 eV and high exciton binding energy, scientists have focused more on...
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...
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May 2024
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