# Six-pack off-axis holography

## TL;DR

Six-pack holography (6PH) is a novel multiplexing technique that compresses six off-axis holograms into one, significantly improving spatial bandwidth efficiency without losing resolution, with potential applications in various multiplexing fields.

## Contribution

Introduction of 6PH, a new holographic multiplexing method that combines six holograms into one, enhancing bandwidth efficiency over previous methods.

## Key findings

- Achieves over 50% improvement in spatial bandwidth consumption.
- Allows full reconstruction of six distinct wavefronts without overlap.
- Applicable to multiple multiplexing scenarios such as wavelength and temporal multiplexing.

## Abstract

We present a new holographic concept, named six-pack holography (6PH), in which we compress six off-axis holograms into a single multiplexed off-axis hologram without loss of magnification or resolution. The multiplexed hologram contains straight off-axis fringes with six different orientations, and can be generated optically or digitally. We show that since the six different complex wavefronts do not overlap in the spatial frequency domain, they can be fully reconstructed. 6PH allows more than 50% improvement in the spatial bandwidth consumption when compared to the best multiplexing method proposed so far. We expect the 6PH concept to be useful for a variety of applications, such as field-of-view multiplexing, wavelength multiplexing, temporal multiplexing, multiplexing for super-resolution imaging, and others.

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Source: https://tomesphere.com/paper/1904.01446