King's College London

TY - JOUR

T1 - 3D Full-Color Image Projection Based on Reflective Metasurfaces under Incoherent Illumination

AU - Roth, Diane J.

AU - Jin, Mingke

AU - Minovich, Alexander E.

AU - Minovich, Alexander E.

AU - Liu, Song

AU - Li, Guixin

AU - Zayats, Anatoly V.

PY - 2020/6/10

Y1 - 2020/6/10

N2 - Metasurfaces provide an efficient approach to control light wavefronts and have emerged at the forefront of digital holography. Nevertheless, full-color image projection remains challenging. Using a combination of specular and diffuse reflections from a metasurface, in analogy to the normal mapping technique, we designed a reflective metasurface performing in the whole visible spectral range to demonstrate 2D images with shading effects of 3D objects. The noninterleaved metasurface is based on aluminum nanostructures with high and relatively uniform efficiency across the visible spectrum. It operates under incoherent illumination and does not require polarizing optics to observe images. The integration of the metasurface behind pre-existing transparent color images is also demonstrated for introduction of 3D effects. Emulating color 3D images with flat metasurfaces can be useful for security applications and decorative purposes. The design of broadband metasurface diffusers is also interesting for flat optical diffusing elements with engineered properties and display technology.

AB - Metasurfaces provide an efficient approach to control light wavefronts and have emerged at the forefront of digital holography. Nevertheless, full-color image projection remains challenging. Using a combination of specular and diffuse reflections from a metasurface, in analogy to the normal mapping technique, we designed a reflective metasurface performing in the whole visible spectral range to demonstrate 2D images with shading effects of 3D objects. The noninterleaved metasurface is based on aluminum nanostructures with high and relatively uniform efficiency across the visible spectrum. It operates under incoherent illumination and does not require polarizing optics to observe images. The integration of the metasurface behind pre-existing transparent color images is also demonstrated for introduction of 3D effects. Emulating color 3D images with flat metasurfaces can be useful for security applications and decorative purposes. The design of broadband metasurface diffusers is also interesting for flat optical diffusing elements with engineered properties and display technology.

KW - 3D effects

KW - holography

KW - Metasurfaces

KW - normal mapping

KW - optical diffusers

UR - http://www.scopus.com/inward/record.url?scp=85086346123&partnerID=8YFLogxK

U2 - 10.1021/acs.nanolett.0c01273

DO - 10.1021/acs.nanolett.0c01273

M3 - Article

C2 - 32343591

AN - SCOPUS:85086346123

VL - 20

SP - 4481

EP - 4486

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 6

ER -