Focusing light through scattering media using the harmony search algorithm for phase optimization of wavefront shaping

Utilizing the wavefront shaping technique to focus light through a scattering medium is a newly emerging field and has shown great potential for various applications. A critical task in this field is identifying a fast, robust algorithm for wavefront shaping. In this work, we introduce a simple-structure algorithm, the harmony search (HS) algorithm, for use in the phase optimization of wavefront shaping. We experimentally demonstrate that HS converges faster than the continuous sequential algorithm (CSA) and reaches a higher overall enhancement. In addition, we establish a simulation model based on random matrix theory. The numerical simulation results agree well with the experimental results and show that the HS algorithm is more resistant than the CSA to noise and sample decoherence.