Investigation of zero-order light suppression methods for digital holograms in various ratio factors

Jung Ping Liu, Ting Chung Poon, Tsung Hsun Yang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Owing to the resolution of the recording device, digital holograms are generally fabricated with in-line configurations. However, holograms obtained in this way are plagued by the annoying problems of zero-order noise and the twin images. Here, we investigate methods to suppress the zero-order noise. We compare the suppression ability of each method with different ratio factors. The ratio factor is defined as the ratio between the reference light amplitude and the object light amplitude. We also introduce a new parameter, the normalized correlation peak value, to evaluate the fidelities of holograms obtained under various ratio factors. Results show that the suppression abilities and the hologram fidelities strongly depend on the ratio factor.

Original languageEnglish
Article number091309
JournalOptical Engineering
Volume50
Issue number9
DOIs
StatePublished - Sep 2011

Keywords

  • digital holography
  • in-line holograph
  • zero-order light suppression

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