Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment

The optical coherence structures of random optical fields can determine beam propagation behavior, light–matter interactions, etc. Their performance makes a light beam robust against turbulence, scattering, and distortion. Recently, we proposed optical coherence encryption and robust far-field optic...

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Main Authors: Xin Liu, Qian Chen, Jun Zeng, Yangjian Cai, Chunhao Liang
Format: Article
Language:English
Published: Editorial Office of Opto-Electronic Journals, Institute of Optics and Electronics, CAS, China 2023-02-01
Series:Opto-Electronic Science
Subjects:
Online Access:https://www.oejournal.org/article/doi/10.29026/oes.2023.220024
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author Xin Liu
Qian Chen
Jun Zeng
Yangjian Cai
Chunhao Liang
author_facet Xin Liu
Qian Chen
Jun Zeng
Yangjian Cai
Chunhao Liang
author_sort Xin Liu
collection DOAJ
description The optical coherence structures of random optical fields can determine beam propagation behavior, light–matter interactions, etc. Their performance makes a light beam robust against turbulence, scattering, and distortion. Recently, we proposed optical coherence encryption and robust far-field optical imaging techniques. All related applications place a high demand on precision in the experimental measurements of complex optical coherence structures, including their real and imaginary parts. Past studies on these measurements have mainly adopted theoretical mathematical approximations, limited to Gaussian statistic involving speckle statistic (time-consuming), or used complicated and delicate optical systems in the laboratory. In this study, we provide: a robust, convenient, and fast protocol to measure the optical coherence structures of random optical fields via generalized Arago (or Poisson) spot experiments with rigorous mathematical solutions. Our proposal only requires to capture the intensity thrice, and is applicable to any optical coherence structures, regardless of their type or optical statistics. The theoretical and experimental results demonstrated that the real and imaginary parts of the structures could be simultaneously recovered with high precision. We believe that such a protocol can be widely employed in phase measurement, optical imaging, and image transfer.
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spelling doaj.art-a8f9aed1791949ed92ca0bc16dd0b93a2023-12-27T09:30:38ZengEditorial Office of Opto-Electronic Journals, Institute of Optics and Electronics, CAS, ChinaOpto-Electronic Science2097-03822023-02-01221910.29026/oes.2023.220024oes-2022-0024CaiYangjianMeasurement of optical coherence structures of random optical fields using generalized Arago spot experimentXin Liu0Qian Chen1Jun Zeng2Yangjian Cai3Chunhao Liang4Shandong Provincial Engineering and Technical Center of Light Manipulation Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, ChinaShandong Provincial Engineering and Technical Center of Light Manipulation Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, ChinaShandong Provincial Engineering and Technical Center of Light Manipulation Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, ChinaShandong Provincial Engineering and Technical Center of Light Manipulation Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, ChinaShandong Provincial Engineering and Technical Center of Light Manipulation Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, ChinaThe optical coherence structures of random optical fields can determine beam propagation behavior, light–matter interactions, etc. Their performance makes a light beam robust against turbulence, scattering, and distortion. Recently, we proposed optical coherence encryption and robust far-field optical imaging techniques. All related applications place a high demand on precision in the experimental measurements of complex optical coherence structures, including their real and imaginary parts. Past studies on these measurements have mainly adopted theoretical mathematical approximations, limited to Gaussian statistic involving speckle statistic (time-consuming), or used complicated and delicate optical systems in the laboratory. In this study, we provide: a robust, convenient, and fast protocol to measure the optical coherence structures of random optical fields via generalized Arago (or Poisson) spot experiments with rigorous mathematical solutions. Our proposal only requires to capture the intensity thrice, and is applicable to any optical coherence structures, regardless of their type or optical statistics. The theoretical and experimental results demonstrated that the real and imaginary parts of the structures could be simultaneously recovered with high precision. We believe that such a protocol can be widely employed in phase measurement, optical imaging, and image transfer.https://www.oejournal.org/article/doi/10.29026/oes.2023.220024optical coherencestatistical opticsarago spotoptical encryptionoptical imaging
spellingShingle Xin Liu
Qian Chen
Jun Zeng
Yangjian Cai
Chunhao Liang
Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment
Opto-Electronic Science
optical coherence
statistical optics
arago spot
optical encryption
optical imaging
title Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment
title_full Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment
title_fullStr Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment
title_full_unstemmed Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment
title_short Measurement of optical coherence structures of random optical fields using generalized Arago spot experiment
title_sort measurement of optical coherence structures of random optical fields using generalized arago spot experiment
topic optical coherence
statistical optics
arago spot
optical encryption
optical imaging
url https://www.oejournal.org/article/doi/10.29026/oes.2023.220024
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