Dual-wavelength diffraction phase microscopy with 170 times larger image area

Behnam Tayebi, Yeonwoo Jeong, Jae Ho Han

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Image area for multiple-color three-dimensional (3-D) off-axis interferometry is extremely restricted because of the Nyquist sampling rate, autocorrelation term, and twin cross-correlation term in the frequency domain for each wavelength. Furthermore, the image area is more restricted in dual-wavelength diffraction phase microscopy, which is an important tool for 3-D biological imaging with subnanometer sensitivity. The reason for this extra restriction is the use of only one pinhole for generating two uniform reference beams, which is not sufficient for imaging large areas. Here, we developed large field-of-view double-pinhole dual-wavelength diffraction phase microscopy as a novel approach to capture maximum possible information using two arbitrary wavelengths in the off-axis arrangement. The rules to optimize the two-dimensional sampling scheme without any crosstalk for two arbitrary wavelengths are theoretically presented. We demonstrate that the loss in the image area of the dual-wavelength holographic system designed with this approach is limited to 0-11% of the maximum possible image area using single-wavelength off-axis interferometry. Total amount of information is more than 170 times that of previously reported dual-wavelength diffraction phase microscopy employing single grating, single pinhole, and no sampling scheme optimization. Feasibility of the technique with sub-nanometer sensitivity is demonstrated by measuring optical thickness of polystyrene microspheres.

Original languageEnglish
Article number8425637
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number2
Publication statusPublished - 2019 Mar 1

Bibliographical note

Funding Information:
Manuscript received June 4, 2018; revised July 7, 2018 and July 31, 2018; accepted July 31, 2018. Date of publication August 6, 2018; date of current version August 16, 2018. This work was supported in part by the Ministry of Science and ICT, South Korea, under the Information Technology Research Center support program (IITP-2017-2016-0-00464) supervised by the Institute for Information and Communications Technology Promotion, in part by the National Research Foundation of Korea funded by the Korean government (MSIT) under Grant NRF-2017R1A2B2003808, in part by a Korea University Future Research Grant, and in part by LG Yonam Foundation (of Korea). (Corresponding author: Jae-Ho Han.) The authors are with the Department of Brain and Cognitive Engineering, Korea University, Seoul 02841, South Korea (e-mail:, behnamty@gmail.com; forresearch4220@gmail.com; jhhan16@gmail.com).

Publisher Copyright:
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  • Phase modulation
  • biophotonics
  • color imaging
  • holography

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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