Generation of enhanced optimal sampled phase-only hologram

P. W. M. Tsang*

*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

Optimal sampling method is effective in generating phase-only hologram. In this approach, the intensity of a source image is multiplied with an optimal sampling lattice, and converted into a hologram. Subsequently, the phase component of the hologram is retained as a phase-only hologram. The optimal sampling lattice is optimized through direct binary search so that the reconstructed image is closest to a given training image. A hologram generated with this method is known as an optimal sampled phase-only hologram (OSPOH). The reconstructed image of an OSPOH is generally good, but its quality cannot be further improved by extending the optimization process. In this paper, an enhancement on the reconstructed image of OSPOH through time-division filtering is presented. Experiment results revealed that the proposed method can lead to significant enhancement on the reconstructed image.
Original languageEnglish
Title of host publicationHolography, Diffractive Optics, and Applications XII
EditorsChanghe Zhou, Ting-Chung Poon, Liangcai Cao, Hiroshi Yoshikawa
PublisherSPIE
ISBN (Electronic)978-1-5106-5703-8
ISBN (Print)978-1-5106-5702-1
DOIs
Publication statusPublished - Dec 2022
EventThe International Society for Optics and Photonics/Chinese Optical Society (SPIE/COS) Photonics Asia 2022 - Online, China
Duration: 5 Dec 202211 Dec 2022

Publication series

NameProceedings of SPIE
Volume12318
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceThe International Society for Optics and Photonics/Chinese Optical Society (SPIE/COS) Photonics Asia 2022
PlaceChina
Period5/12/2211/12/22

Bibliographical note

Full text of this publication does not contain sufficient affiliation information. Research Unit(s) information for this record is based on his previous affiliation.

Research Keywords

  • phase-only hologram
  • sampled phase-only hologram
  • optimal sampled phase-only hologram
  • grid-cross down-sampling
  • direct binary search
  • time-division filtering

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