Focusing light through dynamical samples using fast closed-loop wavefront optimization
Baptiste Blochet, Laurent Bourdieu, Sylvain Gigan
TL;DR
This paper presents a rapid closed-loop wavefront shaping system that enables focusing light through dynamic scattering media by using a MEMS-based SLM, fast photodetector, and FPGA electronics at 4.1 kHz.
Contribution
It introduces a high-speed wavefront optimization system capable of adapting to dynamic media, improving focus stability in scattering environments.
Findings
Successfully focused light through colloidal solutions with tunable stability.
Achieved a single mode optimization rate of 4.1 kHz.
Demonstrated system performance in dynamic scattering conditions.
Abstract
We describe a fast closed-loop optimization wavefront shaping system able to focus light through dynamic scattering media. A MEMS-based spatial light modulator (SLM), a fast photodetector and FPGA electronics are combined to implement a closed-loop optimization of a wavefront with a single mode optimization rate of 4.1 kHz. The system performances are demonstrated by focusing light through colloidal solutions of TiO2 particles in glycerol with tunable temporal stability.
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