Ultrahigh-definition dynamic 3D holographic display by active control of volume speckle fields

Journal: Nature Photonics

Published: 2017-01-23

DOI: 10.1038/nphoton.2016.272

Affiliations: 2

Authors: 4

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Research Highlight

Frosted glass enhances holographic displays

© spanteldotru/E+/Getty

© spanteldotru/E+/Getty

Holograms, 3D images that can be viewed by the naked eye, have been made bigger and easier to view by controlling the usually disruptive scattering of light.

High-definition holograms are currently less than a centimetre in size with viewing angles of around three degrees, limiting their practicality. A team led by researchers from the Korea Advanced Institute of Science and Technology used a deformable mirror to direct light through two layers of frosted glass, which scatters the light in many directions.

Interference between light waves creates a speckle pattern that reduces the image quality, so the team used a wave-shaping device to direct the scattered light. Their technique generated a spinning cylindrical hologram that was 2 centimetres long and 0.8 centimetres wide, with an unprecedented viewing angle of 35 degrees.

Interactive humanoid holograms — like those in Star Trek and Red Dwarf — may be a long way off, but improving holographic displays could enhance visual entertainment, biomedical imaging and engineering design.

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  1. Nature Photonics 11, 186–192 (2017). doi: 10.1038/nphoton.2016.272
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Korea Advanced Institute of Science and Technology (KAIST), South Korea 1