physicists managed to “lock” light in transparent material

An international scientific team has proposed a theory of “locking” light into a transparent material. All materials absorb light at varying degrees. For example, coal absorbs almost all light falling on it, so the eye sees it black, whereas translucent glass has a very small coefficient for absorbing light, as the bulk of light energy passes through the glass. The light absorption energy is used to heat the material, which means that light absorption is an irreversible process. That is, the piece of material on which the light has fallen cannot be forced to launch it back again. But scientists have theoretically been able to describe a method of temporarily “locking” light in a transparent material and then releasing it, and called this method “virtual absorption”. According to scientists, the beam of light will pass through a transparent layer without losing its energy because of heating, but according to their calculations if the frequency of its fall is changed by an exponential function, light energy will accumulate in the transparent material. physicists managed to dispel that simple and intuitive notion by making a completely transparent material appear perfectly absorbing by employing special mathematical properties of the scattering matrix. However, as the energy increases, the accumulated energy leaves the transparent material. This new discovery may find uses in electronics in the future.

Source: vesti.ru

 

 

 

 

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