Point spread function of incoherent digital holography based on spiral phase modulation

Zhongliang, Zhao; Yuan, Xufeng; Xu, Tianxu; He, Jiuru; Qiao-Xiao, Gong; Du, Yanli; Dong, Lin; Yuan, Bin; Fengying, MA

doi:10.7498/aps.67.20171442

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…For a general 3D object g (x, y, z), the reconstructed image is the convolution of overall object intensity g (x, y, z) and the PSF given by equation (18) In order to verify the practicability of the three-step generalized phase shifting interferometry in incoherent…”

Section: System Analysismentioning

confidence: 99%

“…The interference pattern, known as incoherent hologram, is recorded by a charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS). At present, the research of incoherent digital holography mainly focuses on the fields of microscopic imaging of fluorescent biological samples [10,11], high-resolution synthetic aperture imaging [15,16] and spiral phase contrast imaging [17,18], and there have been relatively few research reports on telescopic imaging systems. In [3], the feasibility of full color natural light holographic camera is confirmed using a Michelson interferometer based incoherent digital holographic system.…”

Section: Introductionmentioning

confidence: 99%

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Incoherent holographic camera based on Michelson Interferometer

He¹,

Hong²,

Tian³

et al. 2018

J. Opt.

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Incoherent holography is a hybrid imaging technology with coherent and incoherent processes. Compared with coherent holography, incoherent holography can alleviate coherent noise and speckle noise, and thus achieve higher signal-to-noise ratio. In this article, the incoherent holographic camera based on Michelson interferometer is built, which consists of a telescope, a beam-splitting cube, two plane mirrors, two lenses and a monochromatic charge coupled device. The point spread function (PSF) of the system is determined for the first time according to the Fresnel diffraction theory. Both the simulated and experimental 2D PSFs are coincident with each other. The three-step generalized phase shift interferometry instead of the piezo-actuator is used to eliminate zero-order and twin images. The two one-jiao coins with 15 mm apart and a toy house are recorded under xenon lamp illumination. The reconstructed image clearly demonstrates that the system has the ability to obtain spatial 3D information of an object.

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Section: System Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Incoherent holographic camera based on Michelson Interferometer

He¹,

Hong²,

Tian³

et al. 2018

J. Opt.

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Single-focus phase singularity generated by spiral zone plate with quasi-random distributed quantum dots

Zang¹,

Miao²,

Liang³

et al. 2022

J. Phys. D: Appl. Phys.

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We report new vortex lens for producing single-focus phase singularity which termed as quasi-random-dot-array binary spiral zone plates (QBSZPs). Different from the abrupt transitions of the conventional spiral zone plates (SZPs), the key idea of the QBSZPs is to realize a sinusoidal transmittance by properly arranging lots of quantum dot array which takes on the values of 0 and 1 in two dimensions. In this typical design, the number density of the selected primitives obeys sinusoidal distribution along the radial direction and quasi-random in the azimuthal direction. Theoretical analysis indicate that the higher-order foci which inevitably exist in the SZPs have been indeed effectively suppressed with the QBSZPs. Moreover, the focusing performance of the QBSZPs is influenced by the ratio of circumcircle diameter of the primitives to the outermost zone width. These findings which have been demonstrated by the performed experiment may direct new avenue towards improving the performance of biomedical imaging, quantum computation and optical manipulation.

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Fresnel incoherent digital holography with large field-of-view

Tang¹,

Wu²,

Rui-Huan³

et al. 2019

Acta Phys. Sin.

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Incoherent digital holography (IDH) is a recently proposed technique to record three-dimensional (3D) information about the object under incoherent illumination, which breaks the limitation that the holographic recording must be illuminated by coherent light sources and thus makes it usable in white-light and fluorescence illuminating circumstance. In particular, the fresnel incoherent correlation holography (FINCH) is an exemplary method which improves the imaging resolution power and efficiency of incoherent digital holography, and it can obtain 3D distribution of objects swiftly without scanning and moving. However, compared with the conventional optical holography, the FINCH system has a very small field-of-view due to the limitation of the pixel number and size of spatial light modulator (SLM). Therefore, expanding the recording field-of-view of FINCH system is very significant for the application of IDH. In the FINCH, the SLM is used as a diffractive beam splitter so that each spherical beam, originating from each object point, is split into two spherical beams with two different curve radii. Then the interference fringes between the two beams are recorded by CCD. In this paper, the field-of-view angle recorded by the SLM is proposed and analyzed based on the physical and numerical principles of the FINCH system. The field-of-view of imaging system is improved by increasing the effective diameter of SLM through moving the center of the dual-lens optical axis mounted on the SLM to the edge in different directions respectively. An optical setup of reflection mode is constructed to verify the theoretical analysis of this study, and the sub-holograms in different field-of-views are obtained by CCD through changing the masks displayed on the SLM sequentially. Then, the complex holograms in different field-of-views are obtained by using the three-step phase-shifting method, and the reconstructed images are acquired respectively through the angular spectrum method (ASM) by using a computer. Finally, the large field-of-view image is obtained by stitching the reconstructed images in each field-of-view by utilizing the matlab program. The experimental results show that the efficient recording field-of-view of SLM can be increased by 2.77 times with our proposed method. Accordingly, the recording field-of-view of the system is improved significantly. The recording field-of-view of the FINCH system will increase further if the center of the dual-lens optical axis continues to move toward the edge. Therefore, this study provides an important support for the further application of high resolution microscopic imaging with large field-of-view.

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Point spread function of incoherent digital holography based on spiral phase modulation

Cited by 3 publications

References 21 publications

Incoherent holographic camera based on Michelson Interferometer

Incoherent holographic camera based on Michelson Interferometer

Single-focus phase singularity generated by spiral zone plate with quasi-random distributed quantum dots

Fresnel incoherent digital holography with large field-of-view

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