Holographic colour prints for enhanced optical security by combined phase and amplitude control

Abstract

Conventional optical security devices provide authentication by manipulating a specific property of light to produce a distinctive optical signature. For instance, microscopic colour prints modulate the amplitude, whereas holograms typically modulate the phase of light. However, their relatively simple structure and behaviour is easily imitated. We designed a pixel that overlays a structural colour element onto a phase plate to control both the phase and amplitude of light, and arrayed these pixels into monolithic prints that exhibit complex behaviour. Our fabricated prints appear as colour images under white light, while projecting up to three different holograms under red, green, or blue laser illumination. These holographic colour prints are readily verified but challenging to emulate, and can provide enhanced security in anti-counterfeiting applications. As the prints encode information only in the surface relief of a single polymeric material, nanoscale 3D printing of customised masters may enable their mass-manufacture by nanoimprint lithography.

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References 24

1. 1.

   Matoba O, Nomura T, Perez-Cabre E, Millan MS, Javidi B. Optical techniques for information security. Proc. IEEE. 2009;97:1128-1148.

   Not in our library10.1109/jproc.2009.2018367

2. 2.

   Javidi B, et al. Roadmap on optical security. J. Opt. 2016;18:083001.

   Not in our library10.1088/2040-8978/18/8/083001

3. 3.

   Knop K. Color pictures using the zero diffraction order of phase grating structures. Opt. Commun. 1976;18:298-303.

   Not in our library10.1016/0030-4018(76)90136-x

4. 4.

   Kumar K, et al. Printing colour at the optical diffraction limit. Nat. Nanotechnol. 2012;7:557-561.

   Not in our library10.1038/nnano.2012.128

5. 5.

   Sun S, et al. All-dielectric full-color printing with TiO2 metasurfaces. ACS Nano. 2017;11:4445-4452.

   Not in our library10.1021/acsnano.7b00415

6. 6.

   Lohmann AW, Paris DP. Binary Fraunhofer holograms, generated by computer. Appl. Opt. 1967;6:1739-1748.

   Not in our library10.1364/ao.6.001739

7. 7.

   Goh XM, et al. Three-dimensional plasmonic stereoscopic prints in full colour. Nat. Commun. 2015;5:5361.

   Not in our library10.1038/ncomms6361

8. 8.

   Heydari E, Sperling JR, Neale SL, Clark AW. Plasmonic color filters as dual-state nanopixels for high-density microimage encoding. Adv. Funct. Mater. 2017;27:1701866.

   Not in our library10.1002/adfm.201701866

9. 9.

   Huang YW, et al. Aluminum plasmonic multicolor meta-hologram. Nano. Lett. 2015;15:3122-3127.

   Not in our library10.1021/acs.nanolett.5b00184

10. 10.

    Zhao W, et al. Full-color hologram using spatial multiplexing of dielectric metasurface. Opt. Lett. 2016;41:147-150.

    Not in our library10.1364/ol.41.000147

11. 11.

    Wang B, et al. Visible-frequency dielectric metasurfaces for multiwavelength achromatic and highly dispersive holograms. Nano. Lett. 2016;16:5235-5240.

    Not in our library10.1021/acs.nanolett.6b02326

12. 12.

    Wan W, Gao J, Yang X. Full-color plasmonic metasurface holograms. ACS Nano. 2016;10:10671-10680.

    Not in our library10.1021/acsnano.6b05453

13. 13.

    Li X, et al. Multicolor 3D meta-holography by broadband plasmonic modulation. Sci. Adv. 2016;2:e1601102.

    Not in our library10.1126/sciadv.1601102

14. 14.

    Barton IM, Blair P, Taghizadeh MR. Dual-wavelength operation diffractive phase elements for pattern formation. Opt. Express. 1997;1:54-59.

    Not in our library10.1364/oe.1.000054

15. 15.

    Bengtsson J. Kinoforms designed to produce different fan-out patterns for two wavelengths. Appl. Opt. 1998;37:2011-2020.

    Not in our library10.1364/ao.37.002011

16. 16.

    Levy U, Marom E, Mendlovic D. Simultaneous multicolor image formation with a single diffractive optical element. Opt. Lett. 2001;26:1149-1151.

    Not in our library10.1364/ol.26.001149

17. 17.

    Lee SH, Grier DG. Robustness of holographic optical traps against phase scaling errors. Opt. Express. 2005;13:7458-7465.

    Not in our library10.1364/opex.13.007458

18. 18.

    Mohammad N, Meem M, Wan X, Menon R. Full-color, large area, transmissive holograms enabled by multi-level diffractive optics. Sci. Rep. 2017;7:5789.

    Not in our library10.1038/s41598-017-06229-5

19. 19.

    Chen L, Zhao D. Optical color image encryption by wavelength multiplexing and lensless Fresnel transform holograms. Opt. Express. 2006;14:8552-8560.

    Not in our library10.1364/oe.14.008552

20. 20.

    Nawrot M, Zinkiewicz Ł, Włodarczyk B, Wasylczyk P. Transmission phase gratings fabricated with direct laser writing as color filters in the visible. Opt. Express. 2013;21:31919-31924.

    Not in our library10.1364/oe.21.031919

21. 21.

    Gissibl T, Wagner S, Sykora J, Schmid M, Giessen H. Refractive index measurements of photo-resists for three-dimensional direct laser writing. Opt. Mater. Express. 2017;7:2293-2298.

    Not in our library10.1364/ome.7.002293

22. 22.

    Makowski M, et al. Simple holographic projection in color. Opt. Express. 2012;20:25130-25136.

    Not in our library10.1364/oe.20.025130

23. 23.

    Floyd RW, Steinberg L. An adaptive algorithm for spatial grey scale. Proc. Soc. Inf. Disp. 1976;17:75-77.

    Not in our library

24. 24.

    Gerchberg RW, Saxton WO. A practical algorithm for the determination of phase from image and diffraction plane pictures. Optik. 1972;35:237-246.

    Not in our library

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