Blind focusing through strongly scattering media using wavefront shaping with nonlinear feedback
Optics
2019-05-01 v1
Abstract
Scattering prevents light from being focused in turbid media. The effect of scattering can be negated through wavefront shaping techniques when a localized form of feedback is available. Even in the absence of such a localized reporter, wavefront shaping can blindly form a single diffraction-limited focus when the feedback response is nonlinear. We developed and experimentally validated a model that accurately describes the statistics of this blind focusing process. We show that maximizing the nonlinear feedback signal does not always result in the formation of a focus. Using our model, we can calculate the minimal requirements to blindly focus light through strongly scattering media.
Cite
@article{arxiv.1902.02718,
title = {Blind focusing through strongly scattering media using wavefront shaping with nonlinear feedback},
author = {Gerwin Osnabrugge and Lyubov V. Amitonova and Ivo M. Vellekoop},
journal= {arXiv preprint arXiv:1902.02718},
year = {2019}
}
Comments
13 pages, 4 figures