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Optical Vortex Beams Emit on Silicon

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BRISTOL, England, Oct. 18, 2012 — The smallest emitter of orbital angular momentum (OAM) light — light that travels in a twisting, corkscrew-like manner — was created on silicon. The chip is one thousand times smaller than any other such device reported to date and could be used in optoelectronics and communications technology. OAM light, which can be used to encode and transmit information, has been generated for the past few decades using bulk optics such as lenses and plates, but only recently have scientists tried to produce it using chips. An international group of universities in England,...Read full article

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