Twin-Image Elimination in an In-Line Digital Holographic Microscope

Cho, Hyungjun; Kim, Doocheol; Yu, Younghun; Shin, Sanghoon; Jang, Won; Son, Jung‐Young

doi:10.3938/jkps.52.1031

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J. Korean Phy. Soc.

2008

DOI: 10.3938/jkps.52.1031

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Twin-Image Elimination in an In-Line Digital Holographic Microscope

Hyungjun Cho¹,

Doocheol Kim²,

Younghun Yu³

et al.

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Cited by 4 publications

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DC suppression in in-line digital holographic microscopes on the basis of an intensity-averaging method using variable pixel numbers

Cho¹,

Woo²,

Kim³

et al. 2009

Optics & Laser Technology

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DC suppression in in-line digital holographic microscopes on the basis of an intensity-averaging method using variable pixel numbers

Cho¹,

Woo²,

Kim³

et al. 2009

Optics & Laser Technology

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Study on Digital Holography with Conjugated Hologram

2010

Korean Journal of Optics and Photonics

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In this paper we have applied phase conjugated holographyto DHM (digital holography microscopy) to remove phase aberration and noise. Generally,digital holographyincludes the phase information of the object, phase aberration terms introduced by the measurement system and noise terms (DC term and twin images). These aberrations and noise terms decrease the quality of the reconstructed phase image. We could obtain a conjugated hologram which includes only phase information of object. Experimentally we show that distortion of image and aberration of phase in a measurement system are removed using the conjugation hologram.

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A Study on Two-wavelength Digital Holography Using the Fresnel-Bluestein Transform

Shin¹,

Kim²,

2012

Korean Journal of Optics and Photonics

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Dual-wavelength holography has a better axial range than single-wavelength holography, allowing unambiguous phase imaging. The size of a reconstructed image depends on the reconstruction distance and wavelength. The two phase image sizes of different wavelength holograms should be the same in order to apply dual-wavelength holography. The Fresnel-Bluestein transform method is proposed to eliminate the dependence on the reconstruction distance and wavelength. We found that the Fresnel-Bluestein transform is very useful for making different reconstructed image sizes experimentally. Also we applied the Fresnel-Bluestein transform to make the same reconstruction image size in dual wavelength holography.

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Twin-Image Elimination in an In-Line Digital Holographic Microscope

Cited by 4 publications

References 0 publications

DC suppression in in-line digital holographic microscopes on the basis of an intensity-averaging method using variable pixel numbers

DC suppression in in-line digital holographic microscopes on the basis of an intensity-averaging method using variable pixel numbers

Study on Digital Holography with Conjugated Hologram

A Study on Two-wavelength Digital Holography Using the Fresnel-Bluestein Transform

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