Double phase computer generated on-axis multiplane holograms

In this work, we introduce a method for the computer generation of double phase multiplane holograms. Double phase holograms enable non-iterative complex modulation using phase-only functions and result in high quality reconstructions at the cost of lower effective resolution. However, double phase holography is unable to produce directly multiplane holograms without significant crosstalk. To solve this issue, we implement a modified global Gerchberg Saxton algorithm, where the output is then encoded into a double phase hologram. We demonstrate that this approach offers superior accuracy compared with the conventional global Gerchberg-Saxton algorithm in some scenarios, and that it enables the selection of an initial phase which leads to a trade-off between reconstruction quality and crosstalk. We show both numerical and experimental results supporting the effectiveness of our proposal.