scholarly journals Focusing light through scattering media by polarization modulation based generalized digital optical phase conjugation

2017 ◽  
Vol 111 (20) ◽  
pp. 201108 ◽  
Author(s):  
Jiamiao Yang ◽  
Yuecheng Shen ◽  
Yan Liu ◽  
Ashton S. Hemphill ◽  
Lihong V. Wang
Keyword(s):  
Phase Conjugation ◽  
Polarization Modulation ◽  
Optical Phase Conjugation ◽  
Scattering Media ◽  
Optical Phase

scholarly journals Focusing light through scattering media by full-polarization digital optical phase conjugation

2016 ◽  
Vol 41 (6) ◽  
pp. 1130 ◽  
Author(s):  
Yuecheng Shen ◽  
Yan Liu ◽  
Cheng Ma ◽  
Lihong V. Wang
Keyword(s):  
Phase Conjugation ◽  
Optical Phase Conjugation ◽  
Scattering Media ◽  
Optical Phase

scholarly journals Angular-spectrum modeling of focusing light inside scattering media by optical phase conjugation

Optica ◽  
2019 ◽  
Vol 6 (3) ◽  
pp. 250 ◽  
Author(s):  
Jiamiao Yang ◽  
Jingwei Li ◽  
Sailing He ◽  
Lihong V. Wang
Keyword(s):  
Phase Conjugation ◽  
Angular Spectrum ◽  
Optical Phase Conjugation ◽  
Scattering Media ◽  
Optical Phase ◽  
Spectrum Modeling

scholarly journals An Automatic Optimized Method for a Digital Optical Phase Conjugation System in Focusing through Scattering Media

2020 ◽  
Vol 10 (23) ◽  
pp. 8321
Author(s):  
Pan Zhang ◽  
Zhan Li ◽  
Lu Han ◽  
Dean Liu ◽  
Jianqiang Zhu
Keyword(s):  
Correlation Coefficient ◽  
Fitness Function ◽  
Phase Conjugation ◽  
Practical Implementation ◽  
Optical Phase Conjugation ◽  
Scattering Media ◽  
Conjugation System ◽  
Optical Phase ◽  
Zernike Modes

In this paper, a reliable automatic optimized method for a digital optical phase conjugation (DOPC) system based on a multipopulation genetic algorithm (MPGA) is proposed for improving the compensation quality of DOPC. The practical implementation and compensation quality of DOPC in focusing through scattering media are greatly limited by imperfect pixel alignment, optical aberration, and mechanical error in the DOPC system. For comprehensively solving the above problems, the concept of global optimization is introduced by Zernike polynomials (Zernike modes) to characterize overall imperfections, and MPGA is used to search for the most optimal Zernike coefficient and compensate for the overall imperfections of the DOPC system. The significant optimization ability of the proposed method is verified in DOPC-related experiments for focusing through scattering media. The peak-to-background ratio (PBR) of the OPC focus increases 174 times that of the initial OPC focus. Furthermore, we evaluated the optimization results of the proposed method with a fitness function of intensity fitness and correlation coefficient fitness in MPGA. The results show that the optimized capability is excellent and more efficiently used than the correlation coefficient fitness function in the Zernike modes.

scholarly journals Focusing light inside dynamic scattering media with millisecond digital optical phase conjugation

Optica ◽  
2017 ◽  
Vol 4 (2) ◽  
pp. 280 ◽  
Author(s):  
Yan Liu ◽  
Cheng Ma ◽  
Yuecheng Shen ◽  
Junhui Shi ◽  
Lihong V. Wang
Keyword(s):  
Phase Conjugation ◽  
Optical Phase Conjugation ◽  
Scattering Media ◽  
Optical Phase ◽  
Dynamic Scattering
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