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

Thin holographic camera with integrated reference distribution.

Joonku Hahn1, Daniel L Marks, Kerkil Choi

  • 1Department of Electrical and Computer Engineering and The Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA.

Applied Optics
|August 23, 2011
PubMed
Summary
This summary is machine-generated.

This study introduces a total internal reflection hologram, eliminating the need for bulky beam splitters in off-axis digital holography. This innovation allows for large-aperture, thin-camera hologram recording.

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Last Updated: May 30, 2026

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Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Area of Science:

  • Optics
  • Holography
  • Digital Imaging

Background:

  • Off-axis digital holography commonly employs beam splitters to combine object and reference waves.
  • Beam splitters contribute to the overall thickness and complexity of holographic recording systems.

Purpose of the Study:

  • To develop a novel holographic recording method that obviates the need for a beam splitter.
  • To enable compact and thin holographic systems for large-aperture recording.

Main Methods:

  • Implementation of a total internal reflection (TIR) hologram.
  • Utilizing TIR to combine reference and object waves without a beam splitter.
  • Recording holograms with a large aperture using a thin camera setup.

Main Results:

  • Successfully demonstrated a total internal reflection hologram.
  • Achieved hologram recording over a large aperture.
  • Enabled the use of a significantly thinner camera system compared to traditional methods.

Conclusions:

  • Total internal reflection holography offers a viable alternative to traditional beam splitter-based systems.
  • This method significantly reduces the physical footprint of holographic recording devices.
  • Paves the way for more compact and versatile digital holographic applications.