Researching | Application of Deep Neural Network in Wavefront Sensing Based on Transport of Intensity Equation

Acta Photonica Sinica, Volume. 53, Issue 12, 1201001(2024)

Application of Deep Neural Network in Wavefront Sensing Based on Transport of Intensity Equation

Huizhe YANG^1,2, Haoran ZHANG¹, Jin LIU^1,2, Jing WAN^1,2, Luming ZHAO¹, and Yonghui LIANG^1,2、*

Author Affiliations

¹College of Advanced Interdisciplinary Studies，National University of Defense Technology，Changsha 410073，China

²Nanhu Laser Laboratory，National University of Defense Technology，Changsha 410073，China

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Fig. 1. The propagation of a collimated laser beam through the atmosphere turbulence

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Fig. 2. Imaging of the Rayleigh backscattering

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Fig. 3. WFE with epochs for training and testing sets for different backbone networks

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Fig. 4. LWN design and test

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Fig. 5. Overall model architecture

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Fig. 6. Comparison of different loss functions and distribution of weight vectors

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Fig. 7. Comparison of different optimizers for training and testing sets

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Fig. 8. WFE of DNN and linear reconstruction

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Fig. 9. Reconstructed first 20 Zernike coefficients

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Fig. 10. Reconstruction phases of DNN and linear reconstruction

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Table 1. Simulation parameters

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Table 1. Simulation parameters

Telescope
$D = 1 m$	$N = 128 \times 128$	$I_{0} = e x p (- \frac{x^{2} + y^{2}}{2 a^{2}}) - 0.881 6 (a = 1)$
Atmospheric turbulence
$r_{0} = [0.05 、 0.1 、 0.15] m @ 500 n m$	$L_{0} = 100 m$	$l_{0} = 0.01 m$
One turbulence layer	$h = [0, 5, 10] k m$
TIE wavefront sensor
$h_{1} = 10 k m$	$h_{2} = 17 k m$	$E x p o s u r e t i m e = 2.5 m s$
$L a s e r p o w e r = [5, 10, 20, 50, 100, 200, 300] W$

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Huizhe YANG, Haoran ZHANG, Jin LIU, Jing WAN, Luming ZHAO, Yonghui LIANG. Application of Deep Neural Network in Wavefront Sensing Based on Transport of Intensity Equation[J]. Acta Photonica Sinica, 2024, 53(12): 1201001

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Paper Information

Category: Atmospheric and Oceanic Optics

Received: Aug. 22, 2024

Accepted: Oct. 29, 2024

Published Online: Jan. 15, 2025

The Author Email: Yonghui LIANG (yonghuiliang@sina.com)

DOI:10.3788/gzxb20245312.1201001

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology