Document Type
Article
Publication Date
8-2023
Abstract
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.
Source Publication
IEEE Journal of Quantum Electronics
Recommended Citation
S. A. Owens, M. F. Spencer and G. P. Perram, "Spectral Broadening Effects on Pulsed-Source Digital Holography," in IEEE Journal of Quantum Electronics, vol. 59, no. 4, pp. 1-9, Aug. 2023, Art no. 8200109, doi: 10.1109/JQE.2023.3248176.
Comments
This article appears in volume 59 of IEEE Journal of Quantum Electronics.
This article is published by IEEE and licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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Author note: Mark Spencer is co-affiliated with AFIT and the Air Force Research Laboratory's Directed Energy Directorate.