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Kaczmarz holography: Holographic projection in the Fraunhofer region

Accepted version
Peer-reviewed

Type

Article

Change log

Abstract

The Kaczmarz algorithm is an iterative method for solving linear equations in the form of Ax = b. It is widely used in computed tomography (CT) and digital signal processing (DSP) but has yet to be adopted in computer-generated holography (CGH). Phase retrieval algorithms such as Gerchberg-Saxton or Fienup are significantly more popular in this field, however, in this paper we propose a unique and alternative approach to projecting a replay field through Discrete Fourier Transform (DFT) matrices and have shown that there are legitimate benefits to implementing this approach. The gradient descent iteration mechanism adopted by Kaczmarz, for instance, provides finer granularity control over the individual pixels in the replay field. We consequently demonstrate the quality of the image is significantly improved when compared to Gerchberg-Saxton.

Description

Keywords

computer-generated holography, Kaczmarz, Gerchberg-Saxton

Journal Title

Optical Engineering

Conference Name

Journal ISSN

0091-3286
1560-2303

Volume Title

60

Publisher

SPIE-Intl Soc Optical Eng

Rights

All rights reserved
Sponsorship
Engineering and Physical Sciences Research Council (EP/I033491/1)
EPSRC (EP/T008369/1)
EPSRC (2108797)
Engineering and Physical Sciences Research Council (EP/L015455/1)
Engineering and Physical Sciences Research Council (EP/L016567/1)