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Updated: Jun 22, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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Wavelength-multiplexed submicron holograms for disk-compatible data storage.

Pengfei Wu1, Zhiqiang Liu, Jame J Yang

  • 1New Span Opto-Technology Inc., 16115 S.W. 117th Ave. Ste A-15, Miami, Florida 33177, USA.

Optics Express
|June 25, 2009
PubMed
Summary
This summary is machine-generated.

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Researchers developed a novel micro-hologram storage system using a hybrid achromat and wavelength combiner. This technology enables high-density data storage with diffraction-limited spot size, demonstrating practical viability for future disk storage.

Area of Science:

  • Optical Engineering
  • Data Storage Technologies
  • Holography

Background:

  • Traditional holographic storage faces challenges with limited depth of focus and spot size degradation.
  • Achieving high-density, stable micro-hologram recording requires advanced optical components and systems.

Purpose of the Study:

  • To develop a novel micro-hologram recording and readout system for enhanced data storage.
  • To demonstrate the feasibility of wavelength-multiplexed micro-holograms using a compact, integrated system.

Main Methods:

  • Utilized a hybrid diffractive and refractive achromat with extended depth of focus.
  • Constructed an electrically programmable wavelength combiner with a white light source.
  • Modified a commercial CD readout head to create a compatible micro-hologram system.

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Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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Published on: July 5, 2016

Related Experiment Videos

Last Updated: Jun 22, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
08:48

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
09:04

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

Published on: January 14, 2020

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

Main Results:

  • Successfully recorded micro-hologram arrays with consistent diffraction-limited spot size throughout the recording medium.
  • Achieved wavelength-multiplexed micro-hologram recording and recovery.
  • Demonstrated the practicality and compatibility of the developed storage architecture with existing disk technology.

Conclusions:

  • The hybrid achromat and wavelength combiner approach enables high-fidelity micro-hologram recording.
  • The compact, modified CD readout system offers a practical solution for holographic data storage.
  • The novel storage architecture shows significant potential for future high-density data storage applications.