Common path interferometer based on the modified Michelson configuration using a reflective grating

Bai, Hongyi; Shan, Mingguang; Zhong, Zhi; Guo, Lili; Zhang, Yabin

doi:10.1016/j.optlaseng.2015.06.001

Cited by 38 publications

(10 citation statements)

References 28 publications

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“…Then, we can occupy one of the carrier holograms to conduct experiments. When a translation is applied to RG, another carrier hologram with an additional phase shift can be obtained in a second exposure [20,21]. With the two chosen phase-shifted carrier holograms, the specimen phase can be retrieved using a SODH reconstruction method.…”

Section: Methodsmentioning

confidence: 99%

“…where, α(x, y) and b(x, y) denote the variations in background and the local contrast of fringe, f x is the carrier frequency, j s (x, y) represents the specimen phase distribution, and j bg (x, y) denotes the background phase distribution caused by the system aberration and noise. θ 0 denotes the phase shift introduced by the initial transverse displacement of RG [20].…”

Section: Phase Retrievalmentioning

confidence: 99%

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Slightly off-axis flipping digital holography using a reflective grating

Bai

Min

Yang

et al. 2020

J. Opt.

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A slightly off-axis digital holography is proposed using the flipping interferometry with a reflective grating to obtain the quantitative phase distribution. The setup is established based on a modified 4f optical system using an improved flipping module with a reflective grating and a retro-reflector made of a two-mirror construction. The input plane of the system is divided into two windows: one for object beam and the other for reference beam. Employing the flipping module, the interference patterns can be obtained by flipping the images of the object and reference beams. By translating the +1 diffraction order of the reflective grating, two carrier holograms with a phase shift between them can be obtained in two exposures. The reconstructed quantitative phase distribution of a specimen can be acquired with a simple slightly off-axis retrieval method aided by specimen-free holograms. Many measurements on both thick and thin phase specimens are performed to prove the validity of our method.

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Section: Methodsmentioning

confidence: 99%

Section: Phase Retrievalmentioning

confidence: 99%

Slightly off-axis flipping digital holography using a reflective grating

Bai

Min

Yang

et al. 2020

J. Opt.

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“…35,38,44 Also, approaches to employing a pinhole to one of the beams at its Fourier plane in order to erase all the object information in one beam and it is serving as a reference beam, have been reported. 37,45,46 In this paper, we propose the common-path off-axis configuration by employing a cube beam splitter, which divides the incoming object beam into two beams, and a pinhole is used to filter spatially one of the beams at its Fourier plane, serving a reference beam. The beam splitter-based common-path DHM systems have been reported previously, 44,47 where the system 44 is based on the self-referencing method, and in Ref.…”

Section: Introductionmentioning

confidence: 99%

Common-path multimodal three-dimensional fluorescence and phase imaging system

et al. 2020

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A stable multimodal system is developed by combining two common-path digital holographic microscopes (DHMs): coherent and incoherent, for simultaneous recording and retrieval of three-dimensional (3-D) phase and 3-D fluorescence imaging (FI), respectively, of a biological specimen. The 3-D FI is realized by a single-shot common-path off-axis fluorescent DHM developed recently by our group. In addition, we accomplish, the phase imaging by another single-shot, highly stable common-path off-axis DHM based on a beam splitter. In this DHM configuration, a beam splitter is used to divide the incoming object beam into two beams. One beam serves as the object beam carrying the useful information of the object under study, whereas another beam is spatially filtered at its Fourier plane by using a pinhole and it serves as a reference beam. This DHM setup, owing to a common-path geometry, is less vibration-sensitive and compact, having a similar field of view but with high temporal phase stability in comparison to a two-beam Mach-Zehnder-type DHM. The performance of the proposed common-path DHM and the multimodal system is verified by conducting various experiments on fluorescent microspheres and fluorescent protein-labeled living cells of the moss Physcomitrella patens. Moreover, the potential capability of the proposed multimodal system for 3-D live fluorescence and phase imaging of the fluorescent beads is also demonstrated. The obtained experimental results corroborate the feasibility of the proposed multimodal system and indicate its potential applications for the analysis of functional and structural behaviors of a biological specimen and enhancement of the understanding of physiological mechanisms and various biological diseases. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…Digital holography (DH) has been widely applied in such fields as quantitative phase imaging, contour measurement and nondestructive tests, due to its noncontact, full field and high precision [1][2][3][4][5][6][7]. The traditional DH is usually illuminated using a single wavelength [4][5][6][7][8][9][10][11][12][13][14]. However, the initial reconstructed phase is wrapped with the range [−π, π] when the measured sample is larger than the illumination wavelength, and a numerical phase unwrapping algorithm [15][16][17] is required to achieve continuous phase map.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous two-wavelength tri-window common-path digital holography

Liu

Shan

Zhong

2018

J. Opt.

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Two-wavelength common-path off-axis digital holography is proposed with a tri-window in a single shot. It is established using a standard 4f optical image system with a 2D Ronchi grating placed outside the Fourier plane. The input plane consists of three windows: one for the object and the other two for reference. Aided by a spatial filter together with two orthogonal linear polarizers in the Fourier plane, the two-wavelength information is encoded into a multiplexed hologram with two orthogonal spatial frequencies that enable full separation of spectral information in the digital Fourier space without resolution loss. Theoretical analysis and experimental results illustrate that our approach can simultaneously perform quantitative phase imaging at two wavelengths.

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Common path interferometer based on the modified Michelson configuration using a reflective grating

Cited by 38 publications

References 28 publications

Slightly off-axis flipping digital holography using a reflective grating

Slightly off-axis flipping digital holography using a reflective grating

Common-path multimodal three-dimensional fluorescence and phase imaging system

Simultaneous two-wavelength tri-window common-path digital holography

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