Technologies and Devices International, Inc., (TDI), the leading developer and supplier of compound nitride semiconductor materials, today announced another major breakthrough in Gallium Nitride (GaN) compound semiconductor material technology by fabrication of the first epitaxial structures for blue (450 – 490 nm) and green (490 – 510 nm) light emitting diodes (LEDs) grown by hydride vapor phase epitaxy (HVPE).
The marking and transmission welding of transparent plastics is an interesting subject which is of increasing importance for many plastic products.
Carl Zeiss introduces the PALM MicroBeam IV, a system designed to cleanly extract even the smallest biomaterials from heterogeneous tissue and cell colonies. The patented Laser Microdissection and Pressure Catapulting (LMPC) process at the core of the PALM MicroBeam provides a pure and contact-free optical technique that is gentle enough to facilitate microdissection and manipulation of even living cells in culture.
IPG Photonics Corporation today announced that it has been awarded a $3.8 million contract from the U.S. Navy to supply the Naval Warfare Surface Center with a 44 kilowatt fiber laser system.
Candela Corporation today announced that it received an additional FDA clearance for the Serenity™ device using Pneumatic Skin Flattening technology. This clearance enables the use of the Serenity device for the reduction of pain during all laser and intense pulse light (IPL) treatments. According to Millennium Research, the worldwide installed base of laser and IPLs is estimated to be 70,000 worldwide.
When light strikes a metallic array of tiny openings, smaller than the wavelength of the light itself, interesting entities known as plasmons may be created. An electromagnetic phenomenon like light itself, the plasmons are waves of electrons that move on the surface of a material like ripples on a pond, but they can oscillate back and forth at the frequency of the incoming light. Like water ripples on a pond surface, plasmons travel in the plane of the metal but with a wavelength smaller, sometimes considerably smaller, than the original light.
New research shows that an ultrafast, ultralarge change in reflectivity can be brought about with femtolasers, those that deliver pulses just quadrillionths of a second in length. Dramatic reflectivity changes will be useful in bringing about direct ultrafast optical-to-optical switches for quicker Internet data transfer, faster computers and other applications.
Canada and Spain's University of Murcia used a Macroscope, a patented technology developed by Biomedical Photometrics Inc., which enables imaging of much larger tissue samples at a very high resolution – in this case tissue infected with malaria. Using their new patented method and the Macroscope, the researchers measured tell-tale changes in the polarization of light reflecting off a sample of infected tissue.
Researchers at the University of California, Irvine (UCI) and San Diego (UCSD), have developed a rapid new sorting technique for sperm using a laser trap that can separate stronger, faster sperm from slower sperm. Faster sperm are more likely to successfully fertilize an egg, so the technique could improve the chances of conception via in vitro fertilization by ensuring that only the fastest, strongest sperm are used. The technique could find wide application in animal husbandry and human fertility treatments.
Airline pilots will have more advance warning of potentially hazardous atmospheric conditions – such as icing – using a new near-infrared Light Detection and Ranging (LIDAR) system developed by scientists at RL Associates in Chester, Pa. The system, now in a prototype testing phase, will also provide better images in foggy, rainy or extremely hazy conditions, making it easier for pilots to take off and land in those conditions, thereby potentially reducing flight delays.
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