Anti-scattering light focusing by full-polarization wavefront shaping based on digital micromirror devices

Focusing light inside scattering media has many applications and can be realized by the iterative method optimizing the wavefront of incident light. However, this method often achieves a moderate contrast of focus, which compromises its performance. Here, we propose full-polarization iterative wavefront shaping (FPI-WS) in which we adopt two digital micromirror devices. By modulating the two orthogonal polarization components independently, this method adds one more degree of freedom shaping the wavefront. In comparison with the previous result, FPI-WS can increase the peak to background ratio of focus by a factor of two.

Automated summary

The full-polarization iterative wavefront shaping (FPI-WS) method, using two digital micromirror devices, adds one more degree of freedom in shaping the wavefront by independently modulating two orthogonal polarization components, and can increase the peak to background ratio of focus by a factor of two.