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Improved pattern generation method via joint computer-generated phase holograms.

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Title: Improved pattern generation method via joint computer-generated phase holograms.
Authors: Shi, Kuo1 (AUTHOR), Pan, Zeyu1 (AUTHOR), Lin, Angyi1 (AUTHOR), Li, Haohao1 (AUTHOR), Zhang, Fucai1 (AUTHOR) zhangfc@sustech.edu.cn
Source: Optics & Lasers in Engineering. Aug2026, Vol. 203, pN.PAG-N.PAG. 1p.
Subjects: Holography, Calibration, Iterative methods (Mathematics), Optical measurements, Speckle interference, Holographic displays, Image reconstruction
Abstract: • Innovative Double Plane Modulation: We introduce dual phase-only planes to manipulate control beam and generate target objects. • Enhanced Reconstruction Quality: Improves image quality by reducing speckle noise and accelerating convergence in iterations. • Optimized Registration and Alignment: Iterative refinement corrects positional mismatch, yielding precise hologram alignment. • Simplified Experimental Setup: The experimental arrangement for our proposed technique is designed to be easy to implement. A method is proposed to address the issues of slow convergence, limited reconstruction quality, and pronounced speckle noise commonly encountered in conventional computer-generated hologram (CGH) generation methods. The method uses two cascaded phase holograms that are jointly designed by an iterative algorithm. It imposes constraints on the double-phase hologram plane and employs a new update formula, which dynamically decouples the phase distributions between the two planes. This process enhances image quality, suppresses speckle artifacts, and accelerates convergence. Importantly, the method incorporates a position calibration module to compensate for positional misalignment between the two phase planes. Simulation and optical experimental results show that the proposed method can achieve holographic reconstruction with low speckle and high image fidelity for both grayscale and binary images. In optical experiments, the position calibration module compensates for sub-pixel inter-plane offsets of 2.23 and 7.85 pixels in the vertical and horizontal directions, respectively. This significantly relaxes alignment constraints and simplifies the experimental setup. This work provides a feasible scheme for an efficient and practical joint holographic display. [ABSTRACT FROM AUTHOR]
Copyright of Optics & Lasers in Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 193621339
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Data: Improved pattern generation method via joint computer-generated phase holograms.
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  Data: <searchLink fieldCode="AR" term="%22Shi%2C+Kuo%22">Shi, Kuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pan%2C+Zeyu%22">Pan, Zeyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Angyi%22">Lin, Angyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Haohao%22">Li, Haohao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Fucai%22">Zhang, Fucai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangfc@sustech.edu.cn</i>
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  Data: <searchLink fieldCode="DE" term="%22Holography%22">Holography</searchLink><br /><searchLink fieldCode="DE" term="%22Calibration%22">Calibration</searchLink><br /><searchLink fieldCode="DE" term="%22Iterative+methods+%28Mathematics%29%22">Iterative methods (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+measurements%22">Optical measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Speckle+interference%22">Speckle interference</searchLink><br /><searchLink fieldCode="DE" term="%22Holographic+displays%22">Holographic displays</searchLink><br /><searchLink fieldCode="DE" term="%22Image+reconstruction%22">Image reconstruction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Innovative Double Plane Modulation: We introduce dual phase-only planes to manipulate control beam and generate target objects. • Enhanced Reconstruction Quality: Improves image quality by reducing speckle noise and accelerating convergence in iterations. • Optimized Registration and Alignment: Iterative refinement corrects positional mismatch, yielding precise hologram alignment. • Simplified Experimental Setup: The experimental arrangement for our proposed technique is designed to be easy to implement. A method is proposed to address the issues of slow convergence, limited reconstruction quality, and pronounced speckle noise commonly encountered in conventional computer-generated hologram (CGH) generation methods. The method uses two cascaded phase holograms that are jointly designed by an iterative algorithm. It imposes constraints on the double-phase hologram plane and employs a new update formula, which dynamically decouples the phase distributions between the two planes. This process enhances image quality, suppresses speckle artifacts, and accelerates convergence. Importantly, the method incorporates a position calibration module to compensate for positional misalignment between the two phase planes. Simulation and optical experimental results show that the proposed method can achieve holographic reconstruction with low speckle and high image fidelity for both grayscale and binary images. In optical experiments, the position calibration module compensates for sub-pixel inter-plane offsets of 2.23 and 7.85 pixels in the vertical and horizontal directions, respectively. This significantly relaxes alignment constraints and simplifies the experimental setup. This work provides a feasible scheme for an efficient and practical joint holographic display. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Optics & Lasers in Engineering is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.optlaseng.2026.109834
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Holography
        Type: general
      – SubjectFull: Calibration
        Type: general
      – SubjectFull: Iterative methods (Mathematics)
        Type: general
      – SubjectFull: Optical measurements
        Type: general
      – SubjectFull: Speckle interference
        Type: general
      – SubjectFull: Holographic displays
        Type: general
      – SubjectFull: Image reconstruction
        Type: general
    Titles:
      – TitleFull: Improved pattern generation method via joint computer-generated phase holograms.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Shi, Kuo
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            NameFull: Pan, Zeyu
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            NameFull: Lin, Angyi
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            NameFull: Li, Haohao
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            NameFull: Zhang, Fucai
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            – D: 01
              M: 08
              Text: Aug2026
              Type: published
              Y: 2026
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              Value: 01438166
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              Value: 203
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            – TitleFull: Optics & Lasers in Engineering
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