Four-dimensional experimental characterization of partially coherent light using incoherent modal decomposition
Author:
Lu Xingyuan1, Wang Zhuoyi1, Zhao Chengliang1ORCID, Zhan Qiwen2ORCID, Cai Yangjian3ORCID
Affiliation:
1. School of Physical Science and Technology , Soochow University , Suzhou 215006 , China 2. School of Optical-Electrical and Computer Engineering , University of Shanghai for Science and Technology , Shanghai 200093 , China 3. Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics , Shandong Normal University , Jinan 250358 , China
Abstract
Abstract
The intensity distributions and statistics of partially coherent light fields with random fluctuations have proven to be more robust than for coherent light. However, its full potential in practical applications has not been realized due to the lack of four-dimensional optical field measurement. Here, a general incoherent modal decomposition method of partially coherent light field is proposed and demonstrated experimentally. The decomposed random modes can be used to, but not limited to, reconstruct average intensity, cross-spectral density, and orthogonal decomposition properties of the partially coherent light fields. The versatility and flexibility of this method allows it to reveal the invariance of light fields and to retrieve embedded information after propagation through complex media. The Gaussian-shell-model beam and partially coherent Gaussian array are used as examples to demonstrate the reconstruction and even prediction of second-order statistics. This method is expected to pave the way for applications of partially coherent light in optical imaging, optical encryption, and antiturbulence optical communication.
Funder
Tang Scholar Local Science and Technology Development Project of the Central Government Key Lab of Modern Optical Technologies of Jiangsu Province National Key Research and Development Program of China National Natural Science Foundation of China China Postdoctoral Science Foundation Priority Academic Program Development of Jiangsu Higher Education Institutions
Publisher
Walter de Gruyter GmbH
Subject
Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology
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