(Duke University) Researchers at Duke University have discovered that a perfect absorber of electromagnetic waves they described in a 2017 paper can easily be tweaked into a sort of 'time-reversed laser' known as a coherent perfect absorber (CPA).
from EurekAlert! - Technology, Engineering and Computer Science http://bit.ly/2TQAyO9
Sunday, February 17, 2019
Researchers discover anti-laser masquerading as perfect absorber
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