| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Imaging through scattering layers using a near-infrared low-spatial-coherence fiber random laser |
| Anda Shi(史安达)1,†, Zeyu Wang(王泽宇)1,†, Chenxi Duan(段辰锡)2,†, Zhao Wang(王昭)1,‡, and Weili Zhang(张伟利)1 |
1 School of Information and Communication Engineering, University of Electronic Science & Technology of China, Chengdu 611731, China;
2 Yingcai Honors College, University of Electronic Science & Technology of China, Chengdu 611731, China |
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Abstract Optical memory effect-based speckle-correlated technology has been developed for reconstructing hidden objects from disordered speckle patterns, achieving imaging through scattering layers. However, the lighting efficiency and field of view of existing speckle-correlated imaging systems are limited. Here, a near-infrared low spatial coherence fiber random laser illumination method is proposed to address the above limitations. Through the utilization of random Rayleigh scattering within dispersion-shifted fibers to provide feedback, coupled with stimulated Raman scattering for amplification, a near-infrared fiber random laser exhibiting a high spectral density and extremely low spatial coherence is generated. Based on the designed fiber random laser, speckle-correlated imaging through scattering layers is achieved, with high lighting efficiency and a large imaging field of view. This work improves the performance of speckle-correlated imaging and enriches the research on imaging through scattering medium.
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Received: 13 May 2024
Revised: 09 July 2024
Accepted manuscript online: 17 July 2024
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PACS:
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42.25.Dd
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(Wave propagation in random media)
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42.30.-d
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(Imaging and optical processing)
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42.55.Ye
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(Raman lasers)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 62375040 and 11974071) and the Sichuan Science and Technology Program (Grant Nos. 2022ZYD0108 and 2023JDRC0030). |
Corresponding Authors:
Zhao Wang
E-mail: z_wanguestc@outlook.com
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Cite this article:
Anda Shi(史安达), Zeyu Wang(王泽宇), Chenxi Duan(段辰锡), Zhao Wang(王昭), and Weili Zhang(张伟利) Imaging through scattering layers using a near-infrared low-spatial-coherence fiber random laser 2024 Chin. Phys. B 33 104202
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