Genetic algorithm for feedback-based wavefront shaping in optical imaging

Mehdi Haji Heidari Varnosfaderani; Moein Mozaffarzadeh; Paul Kumar UpputurI; Manojit Pramanik

doi:10.1117/12.2509520

27 February 2019 Genetic algorithm for feedback-based wavefront shaping in optical imaging

Mehdi Haji Heidari Varnosfaderani, Moein Mozaffarzadeh, Paul Kumar UpputurI, Manojit Pramanik

Proceedings Volume 10878, Photons Plus Ultrasound: Imaging and Sensing 2019; 108786G (2019) https://doi.org/10.1117/12.2509520
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

Traditional optical devices rely on light propagation along a straight path. However, when the light propagates through a blurred medium, its direction get scattered by microscopic particles. This inhomogeneous distortion results in a diffused focus point. Light scattering is one of the main limitations for the optical imaging. This limitation decreases the resolution in depth. Therefore, the ability of focusing light at a desired position has a huge worthwhile for applications of optical imaging. Over the past few years, it was shown that light can be focused inside an object even with strong scattering particles, just by shaping the wavefront of the incident beam. The most successful approaches for light focusing at the presence of scattering objects are feedback-based optical wavefront shaping. In this paper, an iterative feedback-based wavefront shaping is proposed. It uses the genetic algorithm. In summary, we aim to obtain a high intensity in the focus point with fewer steps in iteration while increase the signal-to-noise. The simulations results show that both the above mentioned goals are achieved using the proposed method.

Citation Download Citation

Mehdi Haji Heidari Varnosfaderani, Moein Mozaffarzadeh, Paul Kumar UpputurI, and Manojit Pramanik "Genetic algorithm for feedback-based wavefront shaping in optical imaging", Proc. SPIE 10878, Photons Plus Ultrasound: Imaging and Sensing 2019, 108786G (27 February 2019); https://doi.org/10.1117/12.2509520

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