A new technique for creating full-color holograms


21/03/2012

Japanese scientists have developed a unique way to create full-color holograms using surface plasmons.

Scientific director Satoshi Kawata, together with Miyyu Ozaki, have developed a new method of holography, different from all the previous ones, which helps to create a full-color three-dimensional objects. They apply a thin silver film, which are collective oscillations of free electrons (surface plasmons). In recent years, against the background of rapid development of nanotechnology, intensified research in the field of surface plasmons. In addition to holograms, Kawata held a ground-breaking study of the use of surface plasmons in metallic nano-lenses.

In the interview, Kawata said, "I want to be a pioneer of a new discipline - plasmonics"

Color hologram created using a conventional method using a laser beam determined by the color laser. For this reason, most of the single-color holograms. "We developed the new system uses laser beams to record holograms, but does not use them to recreate the image. Instead, we use a beam of white color which contains a mixture of different wavelengths. Because of the white light can be extracted three primary colors - red, green and blue (RGB), it is possible to reconstruct the image of the hologram to the conservation of all colors, applying an image to produce a full-color version, "- said Kawata.

"The key to a successful extraction of colors from white light consists in applying a thin silver film on a light-sensitive material. This results in surface plasmon polaritons in the excited state of the film," - said Ozaki.

"This achievement will be used in the field of three-dimensional displays in the future" - said Ozaki.

Original: Physorg


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