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Focusing of light by disordered metamaterials

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2 Author(s)
Mosk, A.P. ; Dept. of Sci. & Technol., Univ. Twente, Enschede ; Vellekoop, Ivo M.

In many disordered composite materials, such as paint, powders and biological tissue, light is scattered randomly and the directionality of the light is lost. In these disordered metamaterials, light normally performs a random walk and emerges as a random interference pattern known as speckle. Using continuous wave light with a perfectly matched wavefront, we make these disordered materials focus light as sharply as a lens. The matched wavefront is constructed using feedback from a detector in the target focus. By changing the incoming wavefront, we control the position and shape of the focus.

Published in:

Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on

Date of Conference:

17-22 June 2007