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Lambda Research Optics, Inc. - DFO
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Research & Technology News

System Detects ’Evil Twins’
FAYETTEVILLE, Ark. -- FAYETTEVILLE, Ark. -- In the pharmaceutical industry, many enantiomers, or mirror-image molecules, are harmless fillers, but some are truly evil twins that can cause birth defects or other health problems. Accordingly, the US Food and Drug Administration requires pharmaceutical companies to quantify the enantiomers that they produce in the manufacturing process. An optical system currently in development should make that task much easier.The trouble with the molecular twins is that they are...
Undercut Structure Boosts VCSEL Performance
May 1, 2001 — A double intracavity contacted structure developed at the University of California in Santa Barbara may lead to vertical-cavity surface-emitting lasers (VCSELs) that use lattice-matched distributed Bragg reflectors. Reporting in the March 5 issue of...
WaveSplitter Transmits 160 Channels
May 1, 2001 — WaveSplitter Technologies Inc. of Fremont, Calif., demonstrated a 160-channel dense wavelength division multiplexing module in March at OFC in Anaheim, Calif. The 25-GHz demultiplexing module transmitted C-band signals at a rate of 10 Gb/s, enabling...
Bow Ties May Make Good Sensors
TUCSON, Ariz. -- TUCSON, Ariz. -- In the future, bow ties may be more than a fashion accessory for political pundits and used-car salesmen. Researchers at the University of Arizona’s Optical Sciences Center have developed a 940-nm edge-emitting semiconductor...
Corals Wear Fluorescent Sunscreen
SYDNEY, Australia -- SYDNEY, Australia -- It may not be Coppertone, but it works. Scientists from the University of Sydney and the University of Copenhagen in Denmark have discovered that the fluorescent pigments in some corals protect them against sunlight and may help...
Evanescent Waves Probe Gas-Solid Interface
Apr 1, 2001 — A spectroscopic technique developed by a group from Odense Universitet in Denmark, Max Planck Institut für Strömungsforschung in Göttingen, Germany, and the Russian Academy of Sciences in Moscow enables the measurement of the...
Fast Ignition Proposed for Inertial Confinement Fusion
Apr 1, 2001 — Two groups have independently reported fast-ignition techniques for inertial confinement fusion, which drives the implosion of capsules of deuterium and tritium with laser or ion beams, either directly or with x-rays produced in a target hohlraum....
Fiber Probes Engine Oil
MADISON, Wis. -- MADISON, Wis. -- A new sensor that combines the signals from two probes may enable mechanical engineers to better characterize the distribution of motor oil in a running engine. Understanding the behavior of oil films could lead to engine designs...
Fuzzy Logic Boosts Laser Performance
Apr 1, 2001 — A team of researchers at Nanyang Technological University in Singapore has demonstrated that lasers controlled with fuzzy logic systems offer more stable output than optimized open-loop devices or those incorporating proportional integral derivative...
Infrared Camera Exposes Reef Building
MONACO -- MONACO -- Marine scientist John R.M. Chisholm was scratching his head over this one. The coral in his aquarium, it seemed, suffered from somnambulism. On 21 nights over the course of a month, the colonies moved across the sandy bottom to a rock as...
Is Space a Dispersive Medium?
Apr 1, 2001 — According to string theory, perhaps the top contender in the struggle to create a quantum theory of gravity, the vacuum of space is frothing. According to Dimitri V. Nanopoulos, a professor at Texas A&M University in College Station, and his...
Lasers Could Simplify Drilling for Oil
DES PLAINES, Ill. -- DES PLAINES, Ill. -- On the heels of a successful two-year study of the potential of military lasers to drill for natural gas, researchers at the Gas Technology Institute have teamed with the US Department of Energy and with university and industry...
Lasers Keep Runways Safe
Apr 1, 2001 — A laser illumination system developed by Greatland Laser LLC of Anchorage, Alaska, promises to reduce the accident rate of taxiing aircraft. Currently in testing at the US Federal Aviation Administration’s Technical Center in Atlantic City,...
Lasers Tackle Radioactive Concrete
ARGONNE, Ill. -- ARGONNE, Ill. -- What do you do when you have terminated nuclear power, research and weapons development but still have radioactive buildings hanging around? That’s the problem facing the US Department of Energy (DoE) as it decommissions its...
LEDs May Yield Chemical Sensors
MADISON, Wis. -- MADISON, Wis. -- A class of devices based on LEDs promises to enable the development of cost-effective smart sensors. Researchers at the University of Wisconsin have demonstrated that the chemical sensors, fabricated from standard semiconductor...
Lighter Lidar Takes to the Sky
WALLOPS ISLAND, Va. -- WALLOPS ISLAND, Va. -- Satellite pictures of the ocean surface offer insight into the levels of organics that indicate ocean health, but the volume of color imagery exceeds our ability to interpret it. Instrumentation on ships can provide surface...
NASA Tests Quantum Cascade Sensor
Apr 1, 2001 — The results of NASA flight tests have verified the suitability of mid-infrared quantum cascade lasers for atmospheric gas measurements. Reporting in the Jan. 20 issue of Applied Optics, project researchers from the Jet Propulsion Laboratory in...
Oil Damages Los Alamos Laser Lab
Apr 1, 2001 — Officials at Los Alamos National Laboratory in Los Alamos, N.M., estimated that an oil spill at the Atlas pulse power facility in January caused $1.7 million in damage to a laser research facility in the basement. Seven ultrafast lasers, microscopes...
Optical Technique Enhances Aerosol Studies
WASHINGTON -- WASHINGTON -- Understanding the nature of aerosols is vital to designing better nebulizers for chemical analysis and drug delivery, and to investigating fuel mixing in automotive and aerospace applications. Researchers now have a technique at their...
Photonic Crystal Displays Trirefringence
Apr 1, 2001 — Scientists have been familiar with the phenomenon of birefringence ever since Christian Huygens characterized the anisotropy of calcite in the late 1600s. Now a group from University of Southampton in the UK and Toshiba Research Europe Ltd. in...
Researchers Probe ’Light Bullets’
Apr 1, 2001 — A team at the University of Technology Chemnitz in Chemnitz, Germany, has presented the results of its observations of light bullets, blocks of plasma generated by the interaction of laser pulses and matter. The findings, which appeared in the Jan....
Shadow Moire Hits the Streets
Apr 1, 2001 — Sidney Guralnick, a professor of civil engineering at Illinois Institute of Technology in Chicago, has developed a moire topography system to eliminate potholes. Called the Automated Road Inspection System, or Aris, the instrument reveals ruts and...
Silver Nanoclusters Store Data
ATLANTA -- ATLANTA -- Every data cloud may someday have a silver lining. Researchers have demonstrated that fluorescing nanoclusters of two to eight silver atoms can store information, a phenomenon that may eventually find applications in optical data storage....
Slow-Motion Movies Aid Engineers
MURRAY HILL, N.J. -- MURRAY HILL, N.J. -- Understanding how high-frequency vibrations behave is important to the engineering of electronic devices such as television sets and cell phones and, most recently, to the fabrication of acousto-optic devices that handle...
Spectroscopy Offers Hope in Land-Mine Detection
NORWOOD, Mass. -- NORWOOD, Mass. -- From Bosnia to Angola to North Korea, the threat to civilians of injury or death by unexploded land mines is very real. Yet for all of the sophistication of 21st-century warfare, land-mine detection continues to depend on a...

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