Apparent coherence loss in phase space tomography
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Author(s)
Zhang, Zhengyun
Bao, Chenglong
Ji, Hui
Shen, Zuowei
Barbastathis, George
Date Issued
November 2017
Journal
Journal of the Optical Society of America A
Publisher
The Optical Society
Citation
Zhang, Zhengyun, et al. “Apparent Coherence Loss in Phase Space Tomography.” Journal of the Optical Society of America A, vol. 34, no. 11, Nov. 2017, p. 2025. © 2017 Optical Society of America
Version
Author's final manuscript
Abstract
A sensor pixel integrates optical intensity across its extent, and we explore the role that this integration plays in phase space tomography. The literature is inconsistent in its treatment of this integration—some approaches model this integration explicitly, some approaches are ambiguous about whether this integration is taken into account, and still some approaches assume pixel values to be point samples of the optical intensity. We show that making a point-sample assumption results in apodization of and thus systematic error in the recovered ambiguity function, leading to underestimating the overall degree of coherence. We explore the severity of this effect using a Gaussian Schell-model source and discuss when this effect, as opposed to noise, is the dominant source of error in the retrieved state of coherence.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1364/JOSAA.34.002025
