Quantifying the 2.5D imaging performance of digital holographic systems

Kelly, Damien P.; Healy, John J.; Hennelly, Bryan M.; Sheridan, John T.

doi:10.2971/jeos.2011.11034

Cited by 43 publications

(33 citation statements)

References 57 publications

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“…(19). This calculation is somehow equivalent to the computation of the size of the zero order of diffraction in numerical Fresnel propagation [25].…”

Section: Phase Curvature C Taking Any Value: Nontelecentric Modementioning

confidence: 99%

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Off-axis digital holographic microscopy: practical design parameters for operating at diffraction limit

et al. 2014

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The utilization of microscope objectives (MOs) in digital holographic microscopy (DHM) has associated effects that are not present in conventional optical microscopy. The remaining phase curvature, which can ruin the quantitative phase imaging, is the most evident and analyzed. As phase imaging is considered, this interest has made possible the development of different methods of overcoming its undesired consequences. Additionally to the effects in phase imaging, there exist a set of less obvious conditions that have to be accounted for as MOs are utilized in DHM to achieve diffraction-limit operation. These conditions have to be considered even in the case in which only amplitude or intensity imaging is of interest. In this paper, a thorough analysis of the physical parameters that control the appropriate utilization of MOs in DHM is presented. A regular DHM system is theoretically modeled on the basis of the imaging theory. The Fourier spectrum of the recorded hologram is analyzed to evaluate the performance of the DHM. A set of the criteria that consider the microscope features and the recording parameters to achieve DHM operation at the diffraction limit is derived. Numerical modeling and experimental results are shown to validate our findings.

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“…(19). This calculation is somehow equivalent to the computation of the size of the zero order of diffraction in numerical Fresnel propagation [25].…”

Section: Phase Curvature C Taking Any Value: Nontelecentric Modementioning

confidence: 99%

“…Many works have studied the performance of offaxis digital holography [15][16][17][18][19]. As our DHM microscope operates in off-axis architecture, the conditions established in those works are assumed in our design.…”

Section: Introductionmentioning

confidence: 99%

Off-axis digital holographic microscopy: practical design parameters for operating at diffraction limit

et al. 2014

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“…This filtering and sampling effect has been analyzed in the context of digital speckle photography [14] and digital holography using ABCD formalism [15]. The integrating effect of the finite-size pixel also needs to be considered for a digital speckle pattern.…”

Section: Introductionmentioning

confidence: 99%

Speckle orientation in paraxial optical systems

Kelly

Kirner

et al. 2012

Appl. Opt.

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The statistical properties of speckles in paraxial optical systems depend on the system parameters. In particular, the speckle orientation and the lateral dependence (x and y) of the longitudinal speckle size can vary significantly. For example, the off-axis longitudinal correlation length remains equal to the onaxis size for speckles in a Fourier transform system, while it decreases dramatically as the observation position moves off axis in a Fresnel system. In this paper, we review the speckle correlation function in general linear canonical transform (LCT) systems, clearly demonstrating that speckle properties can be controlled by introducing different optical components, i.e., lenses and sections of free space. Using a series of numerical simulations, we examine how the correlation function changes for some typical LCT systems. The integrating effect of the camera pixel and the impact this has on the measured first-and second-order statistics of the speckle intensities is also examined theoretically. A series of experimental results are then presented to confirm several of these predictions. First, the effect the pixel size has on the measured first-order speckle statistics is demonstrated, and second, the orientation of speckles in a Fourier transform system is measured, showing that the speckles lie parallel to the optical axis.

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“…But technology and the digital holographic technique itself, while providing real opportunities also imposes limitations. In [30] these limitations are discussed and rules are presented which permit the total system performance to be quantified.…”

Section: Digital Holography -25 Dimensional Imagingmentioning

confidence: 99%

“…Most of the issues have resulted in recent publications , but my discussion will primarily involve the recent work presented in [26][27][28][29][30][31][32]. I wish to emphasis the importance of treating optical system as systems which must be analysed and designed in their totality.…”

Section: Introductionmentioning

confidence: 99%

Optical signal processing: Holography, speckle and algorithms

Sheridan

2011

Imaging and Applied Optics

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Quantifying the 2.5D imaging performance of digital holographic systems

Cited by 43 publications

References 57 publications

Off-axis digital holographic microscopy: practical design parameters for operating at diffraction limit

Off-axis digital holographic microscopy: practical design parameters for operating at diffraction limit

Speckle orientation in paraxial optical systems

Optical signal processing: Holography, speckle and algorithms

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