High-Speed Light Focusing through Scattering Medium by Cooperatively Accelerated Genetic Algorithm

TL;DR

This paper presents a hardware-accelerated genetic algorithm system using FPGA to rapidly focus light through scattering media, achieving real-time performance suitable for dynamic biological applications.

Contribution

It introduces a cooperatively accelerated GA system with FPGA implementation, significantly improving convergence speed and enabling real-time wavefront shaping in scattering media.

Findings

Achieved light focusing within 4 seconds through scattering media.

Enhanced mutation decay accelerates GA convergence.

Potential to reduce processing time to milliseconds with advanced hardware.

Abstract

We develop an accelerated Genetic Algorithm (GA) system constructed by the cooperation of field-programmable gate array (FPGA) and optimized parameters of the GA. We found the enhanced decay of mutation rate makes convergence of the GA much faster, enabling the parameter-induced acceleration of the GA. Furthermore, the accelerated configuration of the GA is programmed in FPGA to boost processing speed at the hardware level without external computation devices. This system has ability to focus light through scattering medium within 4 seconds with robust noise resistance and stable repetition performance, which could be further reduced to millisecond level with advanced board configuration. This study solves the long-term limitation of the GA, it promotes the applications of the GA in dynamic scattering mediums, with the capability to tackle wavefront shaping in biological material.