Digital-holography Efficiency Measurements using a Heterodyne-pulsed Configuration

Document Type

Article

Publication Date

12-2022

Abstract

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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Copyright statement: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 International License. (CC BY 4.0). Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

Sherpa/RoMEO: Published Version, [pathway b]. https://v2.sherpa.ac.uk/id/publication/12752

DOI

10.1117/1.OE.61.12.123101

Source Publication

Optical Engineering

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