Feedback-type wavefront shaping multi-point light focusing technology based on phase superposition algorithm

Lian Fu Yu; Fan Yang; Yue Hu; Ying Chun Ding; Jia Qi He

doi:10.1117/12.2603113

31 August 2021 Feedback-type wavefront shaping multi-point light focusing technology based on phase superposition algorithm

Lian Fu Yu, Fan Yang, Yue Hu, Ying Chun Ding, Jia Qi He

Author Affiliations +

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 1190729 (2021) https://doi.org/10.1117/12.2603113
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

When light passes through the scattering medium, disordered speckles are formed. The wavefront shaping technology can adjust the amplitude or phase of the incident light to achieve focusing and imaging. In recent years, the research on single-point focusing of wavefront shaping has been relatively thorough, while multi-point focusing has been few researched. In order to achieve controllable multi-point light focusing, we combined the phase superposition method with the Hadamard encoding algorithm to develop a new feedback optimization algorithm. Using the constructed transmission matrix model, we made numerical simulations of the algorithm, and finally successfully achieved multipoint uniform focusing and customized proportional focusing, and proved that the algorithm has strong anti-noise and light control capabilities in multi-point light focusing. Our research will have broad application prospects in the fields of optical manipulation and optogenetics in the future.

Citation Download Citation

Lian Fu Yu, Fan Yang, Yue Hu, Ying Chun Ding, and Jia Qi He "Feedback-type wavefront shaping multi-point light focusing technology based on phase superposition algorithm", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 1190729 (31 August 2021); https://doi.org/10.1117/12.2603113

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