Using chaos theory and an egg-shaped cavity, scientists from Yale University (New Haven, CT), Lucent Technologies Bell Labs (Murray Hill, NJ), and the Max Planck Institute of Physics (Dresden, Germany) developed semiconductor microlasers with more than 1,000 times the power of conventional, disk-shaped microlasers. These tiny energy sources are 0.05 mm in diameter, or as wide as human hair. The researchers say the experimental lasers could either be used to speed up voice, video, Internet, and other forms of communication that use fiber-optic networks or become the basis for entirely new networks. The discovery could allow manufacturers to build computers that would operate with light instead of electrons, with fiber optics replacing wiring. Instead of using the traditional circular laser cavity, Yale physicist A. Douglas Stone suggested changing the shape to an oval or egg. "If it's a circular cylinder, a lot of the laser beam gets wasted and doesn't get out at all," Stone says. Experiments showed that, above a critical deformation level, the light pulses would travel in a bow-tie pattern. They suffer less internal reflection and emit light in four narrow, controllable beams. An enormous increase in output power accompanies this change, Stone says. Each beam has an output of 10 mW, increasing the laser's total output to 40 mW, compared to 40 microwatts in the round cylinder. FAX: (203) 432-2207.
We looked at a number of sources to determine this year's greenest cars, from KBB to automotive trade magazines to environmental organizations. These 14 cars emerged as being great at either stretching fuel or reducing carbon footprint.
Researchers at MIT and Sandia National Labs have observed a reaction in lithium-air batteries that could help improve the design of these cells for electric vehicles and other applications.
From Dell / Intel® New Paradigms in Design Work Scott Hamilton, vertical market strategist for Dell Precision workstations, 5/2/2013 3
Early in my career, I worked as a draftsman and remember the days of drawing on vellum with numbered pencils and Mylar with plastic lead. This was a fun experience in the sense that I ...
I've been using workstations for more than 10 years and love finding ways to get more performance from my system. With demanding professional applications that require more power each ...
A lasting memory from my first job as an engineer in an auto assembly plant is standing on hard concrete at six in the morning, vending-machine coffee clutched in hand, listening to ...
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is
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