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Four-dimensional Experimental Characterization of Partially Coherent Light Using Incoherent Modal Decomposition by Xingyuan Lu; Zhuoyi Wang; Chengliang Zhao; Qiwen Zhan; Yangjian Cai is a Engineering article available to read on EtoBox.

What is Four-dimensional Experimental Characterization of Partially Coherent Light Using Incoherent Modal Decomposition about?

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.

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Author

Xingyuan Lu; Zhuoyi Wang; Chengliang Zhao; Qiwen Zhan; Yangjian Cai

Publisher

Walter de Gruyter GmbH

Published

2023

Language

EN

Field

Engineering (Physical Sciences)