Complex phase effects on a pulsed-source digital holography system

Owens, Steven A.; Spencer, Mark F.; Perram, Glen P.

doi:10.1117/12.2618252

Cited by 2 publications

(8 citation statements)

References 22 publications

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“…As a result, a more sophisticated and accurate model was formulated, specifically for the homodyne-pulsed configuration, and presented in a recent conference proceeding. 19 In support of the second contribution, this paper significantly adapts the model presented in Ref. 19, specifically for the heterodyne-pulsed configuration, and analyzes the effect of an instantaneous phase modulation.…”

Section: Introductionmentioning

confidence: 94%

“…The most probable cause of this over prediction was inaccuracy of the input field estimates. 19 The aliasing and 7.5 MHz resolution of the Fabry-Perot interferometer could have smoothed or hid important features of the spectral line shapes, and certain operational characteristics would be unidentifiable from others. Either of these issues could have led to the inaccurately predicted ambiguity efficiency.…”

Section: Comparison Of Total-system Efficiencymentioning

confidence: 99%

“…18, but none were explored in depth. As a result, a more sophisticated and accurate model was formulated, specifically for the homodyne-pulsed configuration, and presented in a recent conference proceeding 19 …”

Section: Introductionmentioning

confidence: 99%

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Digital-holography efficiency measurements using a heterodyne-pulsed configuration

2022

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A digital-holography (DH) system is created in a heterodyne-pulsed configuration, meaning that the reference and signal pulses are nondeterministically correlated in time. Using the off-axis image plane recording geometry, two performance metrics are measured: (1) the total-system efficiency and (2) the ambiguity efficiency. These metrics are compared against the same measured efficiencies for a DH system in a homodyne-pulsed configuration, which uses deterministically correlated reference and signal pulses. The total-system efficiency of both systems is found to be consistent with one another, showing that no new component efficiencies are required when switching from a homodyne-to a heterodyne-pulsed configuration. Additionally, an instantaneous phase modulation model is used to characterize system performance in terms of nonideal pulse overlap. Such a model validates the use of the ambiguity efficiency for future efforts.

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Section: Introductionmentioning

confidence: 94%

Section: Comparison Of Total-system Efficiencymentioning

confidence: 99%

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Digital-holography efficiency measurements using a heterodyne-pulsed configuration

2022

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“…Therefore, the digitalholographic system used in this experiment was not operating in the shot-noise-limited regime [11], [23]. However, this outcome did not affect the ambiguity and coherence efficiencies and is accounted for by other independent efficiencies within the total-system efficiency [16], [17], [25].…”

Section: Jqe-136108-2022mentioning

confidence: 99%

“…Because of this, these efficiencies are not of particular concern in this paper. However, the ambiguity and coherence efficiencies are fundamentally linked to the temporal coherence of the pulses [16], [17], [25]. The ambiguity efficiency is derived from the zero-Doppler cut of the ambiguity function [17], [26], [27], such that…”

Section: Jqe-136108-2022mentioning

confidence: 99%

Spectral Broadening Effects on Pulsed-Source Digital Holography

Owens

Spencer

Perram

2023

IEEE J. Quantum Electron.

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Using a pulsed configuration, a digital-holographic system is setup in the off-axis image plane recording geometry, and spectral broadening via pseudo-random bit sequence is used to degrade the temporal coherence of the master-oscillator laser. The associated effects on the signal-to-noise ratio are then measured in terms of the ambiguity and coherence efficiencies. It is found that the ambiguity efficiency, which is a function of signal-reference pulse overlap, is not affected by the effects of spectral broadening. The coherence efficiency, on the other hand, is affected. As a result, the coherence efficiency, which is a function of effective fringe visibility, is shown to be a valid performance metric for pulsed-source digital holography.

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Complex phase effects on a pulsed-source digital holography system

Cited by 2 publications

References 22 publications

Digital-holography efficiency measurements using a heterodyne-pulsed configuration

Digital-holography efficiency measurements using a heterodyne-pulsed configuration

Spectral Broadening Effects on Pulsed-Source Digital Holography

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