"Physicists in Austria and Germany have taken the Faraday effect to a new extreme by rotating the polarization of light by 45° by passing it through an extremely thin film. This "giant Faraday effect" could someday be used to create optical transistors that switch light or to improve terahertz imaging systems."
Thin film has 'astonishing' ability to rotate light - physicsworld.com
Showing posts with label Optics. Show all posts
Showing posts with label Optics. Show all posts
Thursday 7 April 2011
Tuesday 1 February 2011
Negative refraction
Negative refraction refers to the electromagnetic phenomenon where a light ray is refracted at an interface in the reverse sense to that normally expected. V. G. Veselago proposed that a negative refraction can be obtained with a metamaterial, having a negative value for both (electric) permittivity ε and (magnetic) permeability μ. This material is also known as "double negative" material.
See the simulation at http://en.wikipedia.org/wiki/Negative_refraction
See the simulation at http://en.wikipedia.org/wiki/Negative_refraction
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