An accurate algorithm to find the axial position of an object in lens-free inline digital holography

Hee Jung Lee, Phil Jun Jeon, Jun Woo Kim, Dug Young Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have investigated distortions in the axial position calculations of a sample in lens-free digital inline holography (LDIH). Three-dimensional structure of a sample can be accurately obtained through a series of processes in LDIH, Fourier-domain digital filtering, and numerical focusing. The axial information of a sample is calculated through numerical beam propagation using diffraction theory and can be easily distorted because of approximations and assumptions used in the diffraction formula and the numerical beam propagation analysis used in LDIH. Since the reference light in LDIH is normally a diverging spherical beam from a point source, axial information of a sample calculated by a numerical focusing algorithm with a plane reference beam is off from the real axial position of a sample. We propose an algorithm that can correct this distortion in LDIH.

Original languageEnglish
Title of host publicationPractical Holography XXXI
Subtitle of host publicationMaterials and Applications
EditorsHans I. Bjelkhagen, V. Michael Bove
PublisherSPIE
ISBN (Electronic)9781510606951
DOIs
Publication statusPublished - 2017
EventSPIE Conference on Practical Holography XXXI: Materials and Applications - San Francisco, United States
Duration: 2017 Jan 302017 Feb 1

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10127
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSPIE Conference on Practical Holography XXXI: Materials and Applications
CountryUnited States
CitySan Francisco
Period17/1/3017/2/1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'An accurate algorithm to find the axial position of an object in lens-free inline digital holography'. Together they form a unique fingerprint.

  • Cite this

    Lee, H. J., Jeon, P. J., Kim, J. W., & Kim, D. Y. (2017). An accurate algorithm to find the axial position of an object in lens-free inline digital holography. In H. I. Bjelkhagen, & V. M. Bove (Eds.), Practical Holography XXXI: Materials and Applications [101270P] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10127). SPIE. https://doi.org/10.1117/12.2251896