http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- One of the drawbacks associated with using semiconductor lasers is that many of them can only produce a beam of a single wavelength, and can only send that beam in one direction at a time. There have been efforts to tune lasers so that different wavelengths can be achieved, but these lasers still emit light only in one direction, and one wavelength at a given time. All that could change, though. Harvard University scientists Federico Capasso and Nanfang Yu , in Cambridge, Massachusetts, have been working with an international team to develop a laser that offers multibeam emission. http://www.physorg.com/news177582639.html Physics Mon, 16 Nov 2009 09:50:01 EST news177582639 (PhysOrg.com) -- Sharp Corporation has announced the development of a new 500 mW semiconductor laser for triple- and quadruple- layer Blu-ray discs. http://www.physorg.com/news172481493.html Technology Fri, 18 Sep 2009 10:10:01 EST news172481493 (PhysOrg.com) -- Researchers at the University of California, Berkeley, have reached a new milestone in laser physics by creating the world's smallest semiconductor laser, capable of generating visible light in a space smaller than a single protein molecule. http://www.physorg.com/news170862487.html Physics Sun, 30 Aug 2009 14:48:46 EST news170862487 Electrons that are trapped in very small structures of only a few nanometer, demonstrate fascinating features. These could be useful for novel computers or semiconductor lasers. Researchers from the University of Sheffield, the Ecole Normale Supérieure in Paris, and the Forschungszentrum Dresden-Rossendorf research center measured for the first time the exact lifetime of excited electrons and published their findings in the journal Nature Materials. http://www.physorg.com/news169817885.html Nanotechnology Tue, 18 Aug 2009 12:50:02 EST news169817885 (PhysOrg.com) -- A massive European effort to develop high-brightness semiconductor lasers could transform healthcare, telecoms and display applications and make Europe an undisputed leader in the field. http://www.physorg.com/news169305470.html Technology Wed, 12 Aug 2009 14:30:03 EST news169305470 (PhysOrg.com) -- Telecoms, healthcare and display technology will be the major beneficiaries of a new generation of semiconductor lasers developed in a massive European research effort. Better cancer treatment, wider bandwidth and smaller, better displays could be on their way. http://www.physorg.com/news169305609.html Technology Wed, 12 Aug 2009 14:30:01 EST news169305609 A massive European effort to develop high-brightness semiconductor lasers could transform healthcare, telecoms and display applications and make Europe an undisputed leader in the field. http://www.physorg.com/news164549707.html Physics Thu, 18 Jun 2009 13:50:02 EST news164549707 Applied scientists at the Harvard School of Engineering and Applied Sciences (SEAS) in collaboration with researchers from Hamamatsu Photonics in Hamamatsu City, Japan, have demonstrated, for the first time, lasers in which the direction of oscillation of the emitted radiation, known as polarization, can be designed and controlled at will. The innovation opens the door to a wide range of applications in photonics and communications. Harvard University has filed a broad patent on the invention. http://www.physorg.com/news158814118.html Physics Mon, 13 Apr 2009 04:02:48 EST news158814118 Tiny disk-shaped lasers as small as a speck of dust could one day beam information through optical computers. Unfortunately, a perfect disk will spray light out, not as a beam, but in all directions. New theoretical results, reported in the Optical Society (OSA) journal Optics Letters, explain how adding a small notch to the disk edge provides a single outlet for laser light to stream out. http://www.physorg.com/news151859217.html Physics Thu, 22 Jan 2009 15:07:32 EST news151859217 (PhysOrg.com) -- Random numbers -- numbers without any pattern -- are vital to many applications, such as computer simulations, statistics, and cryptography. There are many ways to generate them using unpredictable physical processes, including electric-signal noise and radioactive decay, but these methods cannot produce the quantities of numbers needed to keep up with the high data-processing rates of today's computers. http://www.physorg.com/news148660964.html Physics Tue, 16 Dec 2008 14:42:44 EST news148660964 Applied scientists at Harvard collaborating with researchers at Hamamatsu Photonics in Hamamatsu City, Japan, have demonstrated, for the first time, highly directional semiconductor lasers with a much smaller beam divergence than conventional ones. http://www.physorg.com/news136215840.html Physics Sun, 27 Jul 2008 13:00:53 EST news136215840