A high performance computing algorithm to improve in-line holography

Abstract

A holographic algorithm is suggested to reduce the computing time by orders of magnitude in computer generation and reconstruction of holograms, that is called HPCHolo (High Performance Computing Holography). It is proposed to speed up the generation of holograms by a ray-tracing technique and the reconstruction of a virtual image from that hologram by a correlation technique. We applied the new algorithm to two-dimensional (2D) and three-dimensional (3D) objects modelling on the PowerXplorer computer (multiprocessor message passing machine). We study the relation between the hologram size, the resolution of the reconstructed image and the computational time for both construction and reconstruction processes and obtain satisfactory results.