A coherent perfect absorber (CPA), or anti-laser, is a mechanism for absorption of coherent light particles along specific wavelengths; the inverse of a laser. [1] [2] Energy is released from the absorption process in the form of heat.[3] The concept was first published in the July 26, 2010, issue of Physical Review Letters, by a team at Yale Universityled by theorist A. Douglas Stone.[4][5] In the September 9, 2010, issue of Physical Review A, Stefano Longhi of Politecnico di Milano showed how to combine a laser and an anti-laser in a single device.[6][7] In February 2011 the team at Yale built the first working anti-laser. [8] For the moment, the device is able to absorb 99.4 percent of all incoming light, but the team behind the invention believe it will be possible to increase this number to 99.999 percent.[9]
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Sunday, February 20, 2011
Scientists announce creation of world's first anti-laser - CTV News
Scientists announce creation of world's first anti-laser - CTV News
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