Broadband visible reflective metasurfaces for the visualisation of 3D effects (Conference Presentation)

Diane J. Roth; Alexander E. Minovich; Guixin Li; Anatoly V. Zayats

doi:10.1117/12.2527594

27 July 2019 Broadband visible reflective metasurfaces for the visualisation of 3D effects (Conference Presentation)

Diane J. Roth, Alexander E. Minovich, Guixin Li, Anatoly V. Zayats

Proceedings Volume 11062, Digital Optical Technologies 2019; 1106209 (2019) https://doi.org/10.1117/12.2527594
Event: SPIE Digital Optical Technologies, 2019, Munich, Germany

Abstract

Dielectric and plasmonic metasurfaces provide excellent control over the shaping of optical wavefronts via the manipulation of polarisation, phase and amplitude of the light. Taking advantage of their subwavelength thicknesses, metasurfaces have shown to be a very promising technology in a variety of applications including beam steering and focusing, polarisation and angular momentum control, enhancement of nonlinear effects, as well as holographic information encoding for 3D displays. Recently, the emergence of virtual reality and augmented reality technologies have led to the constant demand of effective techniques for the 2D visualisation of 3D objects. Normal mapping, for example, is widely used in computer graphics to create shading effects and recreate 3D-like features of surface textures, such as regular patterns, bumps or ripples. Here, we report on the development of the concept of surface normal mapping for the representation of 3D objects and shading effects with optical metasurfaces. In this work, the metasurface is designed to implement diffuse reflection and uses the concept of normal mapping to control its scattering properties. As a proof of principle, a flat diffuse metasurface imitating lighting and shading effects of a 3D cube was fabricated and characterised under incoherent illumination. The “3D image” is displayed directly on the illuminated metasurface and its shading varies in response to the change in illumination angle. The metasurface performs in a broad range of the visible spectrum, including the three main RGB wavelengths. The 3D images created via normal mapping based on optical metasurfaces provide an effective technology for 3D security features and anti-counterfeiting. This type of metasurfaces can also be useful in the design of efficient optical diffusers for display technology and etalons for metrology.

Conference Presentation

Citation Download Citation

Diane J. Roth, Alexander E. Minovich, Guixin Li, and Anatoly V. Zayats "Broadband visible reflective metasurfaces for the visualisation of 3D effects (Conference Presentation)", Proc. SPIE 11062, Digital Optical Technologies 2019, 1106209 (27 July 2019); https://doi.org/10.1117/12.2527594

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available