Cardinal point

Speckle noise

Speckle pattern

Frequency domain

Telecommunications

Physics

Lens (geology)

Spatial light modulator

Multiplexing

Optics

Quantum mechanics

Fourier transform

Holography

Superposition principle

Computer science

Algorithm

Wavefront

Computer-generated holography

Computer vision

PhotoniX

Computer-generated holography can obtain the wavefront required for constructing arbitrary intensity distributions in space. Currently, speckle noises in holography remain an issue for most computational methods. In addition, there lacks a multiplexing technology by which images from a single hologram and light source can be switched by a lens. In this work, we first come up with a new algorithm to generate holograms to project smoother images by wavevector filtering. Thereupon, we propose a unique multiplexing scheme enabled by a Fourier lens, as the incident light can be decomposed either by a superposition of spherical waves or plane waves. Different images are obtained experimentally in the spatial and wavevector domains, switchable by a lens. The embedded wavevector filtering algorithm provides a new prospective for speckle suppression without the need for postprocessing. The multiplexing technology can double the capacity of current holographic systems and exhibits potential for various interesting display applications.

Domain multiplexed computer-generated holography by embedded wavevector filtering algorithm