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We present a novel approach to perform quantitative phase imaging (QPI) through random phase diffusers using a diffractive neural network consisting of successive diffractive layers optimized using deep learning. This diffractive network is trained to convert the phase information of samples positioned behind random diffusers into intensity variations at the output, enabling all-optical phase recovery and quantitative phase imaging of objects hidden by unknown random diffusers. Unlike traditional digital image reconstruction methods, our all-optical diffractive processor does not require external power beyond the illumination beam and operates at the speed of light propagation.
Yuhang Li,Yi Luo,Deniz Mengu,Bijie Bai, andAydogan Ozcan
"All-optical quantitative phase imaging through random diffusers using a diffractive network", Proc. SPIE PC12655, Emerging Topics in Artificial Intelligence (ETAI) 2023, PC126550T (28 September 2023); https://doi.org/10.1117/12.2678212
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Yuhang Li, Yi Luo, Deniz Mengu, Bijie Bai, Aydogan Ozcan, "All-optical quantitative phase imaging through random diffusers using a diffractive network," Proc. SPIE PC12655, Emerging Topics in Artificial Intelligence (ETAI) 2023, PC126550T (28 September 2023); https://doi.org/10.1117/12.2678212