Improvement of phase measurement accuracy and stability in dual-wavelength common-path digital holographic microscopy

Jianglei Di, Yu Song, Teli Xi, Jiwei Zhang, Ying Li, Chaojie Ma, Kaiqiang Wang, Jianlin Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

A dual-wavelength common-path digital holographic microscopy is presented to simultaneously improve the phase measurement accuracy and stability. Two laser beams with different wavelength are reflected by the front and back surface of a parallel glass plate to form the composite hologram in the lateral shearing region, and a shorter synthetic wavelength Λ289nm is obtained by calculating the arctangent and product of the two reconstructed complex amplitudes. Thus, phase speckle noise can be reduced in the dual-wavelength numerical reconstruction process, and the phase measurement accuracy and stability can be improved. The experiment results of the peony pollens specimen show the feasibility of the proposed configuration.

Original languageEnglish
Title of host publicationFifth International Conference on Optical and Photonics Engineering
EditorsAnand Krishna Asundi
PublisherSPIE
ISBN (Electronic)9781510613720
DOIs
StatePublished - 2017
Event5th International Conference on Optical and Photonics Engineering - Singapore, Singapore
Duration: 4 Apr 20177 Apr 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10449
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference5th International Conference on Optical and Photonics Engineering
Country/TerritorySingapore
CitySingapore
Period4/04/177/04/17

Keywords

  • Digital holographic interferometry
  • digital holography
  • dualwavelength technique
  • interference microscopy
  • phase measurement

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