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The Making of a Computer-Generated Hologram

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The technology for fabricating computer-generated holograms is demanding and requires advanced lithographic techniques.

Uwe D. Zeitner, Fraunhofer IOF; Michael Banasch, Vistec Electron Beam GmbH; and Ernst-Bernhard Kley, Institute of Applied Physics, Friedrich Schiller Universität

Computer-generated holograms (CGHs) play an important role in the modern optics used for generating application-specific optical fields and functions. Their ability to transform incident beams into wavefronts is based upon micro- and nanosize surface structure data that is calculated by computer. Typical applications include interferometric testing of high-precision aspheric lenses, splitting an illumination beam into a number of equal-intensity spots and highly efficient coupling of laser light into optical fibers. The fabrication of CGHs is based on lithographic technologies, such as...Read full article

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    Published: December 2008
    computer-generated hologramsFeaturesindustriallithographic technologiesoptical fields

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