Ghost imaging based on Fermat spiral laser array designed for remote sensing

Lai, Wenchang; Lei, Guozhong; Meng, Qi; Ma, Yanxing; Cui, Wenda; Shi, Dongfeng; Liu, Hao; Wang, Yan; Han, Kai

doi:10.1364/oe.500794

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…From the polarizer to the metasurface, the incident light field is modulated via a 4 f system. If the light field in the input plane is defined as U (x, y, 0), the light field in the output plane could be expressed as [33,55,56]:…”

Section: Scheme Descriptionmentioning

confidence: 99%

All-dielectric metasurface for polarization-multiplexed single-pixel imaging

Wang,

Guo,

Guo

2024

J. Opt.

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Integration and miniaturization of multi-channel single-pixel imaging systems have become a developing trend. However, it is challenging to meet such development needs solely relying on traditional optical devices. One feasible solution is the utilization of metasurfaces with multiplexing functionality. Here, we propose and validate an all-dielectric, anisotropic metasurface that provides a random mask with polarization multiplexing for single pixel imaging. The design ensures each mask contains 50% target information, allowing adaptive correlated imaging of different targets without needing to redesign the masks. By optimizing the metasurface, we enhance computational efficiency by preventing correlation between different polarization channels and mask patterns. We also adjust the parameters of the compressed sensing algorithm to accommodate various sampling rates, ensuring high-quality image reconstruction. Additionally, the whole system is simulated by the angular spectrum transmission and compressed sensing reconstruction algorithm, providing image reconstruction results for metasurfaces of different sizes, demonstrating the feasibility of the proposed approach. It is noteworthy that the designed metasurface works for single-wavelength operation and could be extended to multispectral imaging by introducing achromatic metasurface technology. The proposed method could miniaturize the optical devices and reduce light loss.

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Section: Scheme Descriptionmentioning

confidence: 99%

All-dielectric metasurface for polarization-multiplexed single-pixel imaging

Wang,

Guo,

Guo

2024

J. Opt.

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“…Building on the insights gained from OPA chip SPI schemes, we propose the utilization of a phase-controlled coherent fiber laser array as the illuminating source for SPI. The concept of employing a laser array for SPI illumination has been previously analyzed in theoretical studies [ 30 – 32 ]. However, to the best of our knowledge, practical implementation of collimated fiber laser arrays in SPI systems has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Efficient single-pixel imaging based on a compact fiber laser array and untrained neural network

Lai,

Lei,

Meng

et al. 2024

Front. Optoelectron.

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This paper presents an efficient scheme for single-pixel imaging (SPI) utilizing a phase-controlled fiber laser array and an untrained deep neural network. The fiber lasers are arranged in a compact hexagonal structure and coherently combined to generate illuminating light fields. Through the utilization of high-speed electro-optic modulators in each individual fiber laser module, the randomly modulated fiber laser array enables rapid speckle projection onto the object of interest. Furthermore, the untrained deep neural network is incorporated into the image reconstructing process to enhance the quality of the reconstructed images. Through simulations and experiments, we validate the feasibility of the proposed method and successfully achieve high-quality SPI utilizing the coherent fiber laser array at a sampling ratio of 1.6%. Given its potential for high emitting power and rapid modulation, the SPI scheme based on the fiber laser array holds promise for broad applications in remote sensing and other applicable fields. Graphical Abstract

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Ghost imaging based on Fermat spiral laser array designed for remote sensing

Cited by 2 publications

References 34 publications

All-dielectric metasurface for polarization-multiplexed single-pixel imaging

All-dielectric metasurface for polarization-multiplexed single-pixel imaging

Efficient single-pixel imaging based on a compact fiber laser array and untrained neural network

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