Large field of view multi-point light focusing in strongly perturbed scattering media based on non-dominated bat algorithm wavefront shaping

Abstract

Wavefront shaping has become a powerful tool for controlling light through scattering media and enable the focusing and imaging of diffusive light. However, when facing with strong noise environments or scattering media being suddenly disturbed, this method becomes powerless. In addition, due to limitations of memory effects (ME) range, the field of view for imaging is very small. In this paper, we propose a new non-dominated bat algorithm (N-BA) for wavefront shaping multi-point optical focusing with adaptive mutation rate, which can easily change the mutation rate in the iterative process by calculating the error rate of the current solution to adapt to sudden strong scattering media disturbances. Experimental results show that when the scattering medium is disturbed and the focusing performance significantly deteriorates, the proposed method can effectively achieve multi-point focusing with large field of view and uniform intensity. We believe that this research may promote or stimulate more applications of wavefront shaping in unstable media and even living biological tissues.