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Journal of the Korean Physical Society

, Volume 75, Issue 9, pp 685–692 | Cite as

Development of Digital Holographic Microscopy on an All-Optical Phase Shifter

  • Hye Jun Ma
  • Seung Seok Lee
  • Sohee Park
  • Eun Seo ChoiEmail author
Article
  • 16 Downloads

Abstract

We propose an all-optical phase-shifting method using Yb-doped optical fibers and demonstrate its potential in on-axis digital holography microscopy (DHM) system. The Yb-doped optical fiber induces a phase change under optical pumping conditions. The induced phase shift shows a good linear response to applied pumping currents, and N-step phase-shifting up to 2p can be properly performed. Four-, six-, and eight-step phase-shifting methods are performed, and the phase retrievals from their phase-shifted interferograms are achieved using an interframe correlation matrix method. An 8-step phase shifting-based reconstruction, which is effective for background noise reduction, is used for 3D imaging of an indium tin oxide (ITO) thin film and an organic light-emitting diode (OLED) thin film. The reconstructed surface profile was in agreement with the step structure of the samples. The proposed all-optical phase-shifting method is expected to be applied to various optical imaging systems using fiber-based phase-shifting interferometers.

Keywords

All-optical fiber device Phase shifting Yb-doped optical fiber Digital holography microscopy 

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Notes

Acknowledgments

This work was supported by the research fund of Chosun University in 2018.

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Copyright information

© The Korean Physical Society 2019

Authors and Affiliations

  • Hye Jun Ma
    • 1
  • Seung Seok Lee
    • 1
  • Sohee Park
    • 1
  • Eun Seo Choi
    • 1
    Email author
  1. 1.Department of PhysicsChosun UniversityGwangjuKorea

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