A wavelength and polarization selective photon sieve for holographic applications

TL;DR

This paper introduces a novel holographic scheme using optical metasurfaces with photon sieve principles and Pancharatnam-Berry phase to multiplex amplitude and phase holograms at different wavelengths and polarizations, enabling advanced information storage.

Contribution

It presents a dual amplitude and phase holographic scheme combining photon sieve and metasurface technology for wavelength and polarization multiplexing.

Findings

Successfully demonstrated multiplexed holograms at different wavelengths and polarizations

Achieved simultaneous amplitude and phase holography without space-bandwidth loss

Enabled potential for multi-channel information storage and display

Abstract

Optical metasurfaces are perfect candidates for the phase and amplitude modulation of light, featuring an excellent basis for holographic applications. In this work, we present a dual amplitude holographic scheme based on the photon sieve principle, which is then combined with a phase hologram by utilizing the Pancharatnam-Berry phase. We demonstrate that two types of apertures, rectangular and square shapes in a gold film filled with silicon nanoantennas are sufficient to create two amplitude holograms at two different wavelengths in the visible, multiplexed with an additional phase-only hologram. The nanoantennas are tailored to adjust the spectral transmittance of the apertures, enabling the wavelength sensitivity. The phase-only hologram is implemented by utilizing the anisotropic rectangular structure. Interestingly, such three holograms have quantitative mathematical correlations with each other. Thus, the flexibility of polarization and wavelength channels can be utilized with custom-tailored features to achieve such amplitude and phase holography simultaneously without sacrificing any space-bandwidth product. The present scheme has the potential to store different pieces of information which can be displayed separately by switching the wavelength or the polarization state of the reading light beam.