TY - JOUR
T1 - Focusing light by wavefront shaping through disorder and nonlinearity
AU - Frostig, Hadas
AU - Small, Eran
AU - Daniel, Anat
AU - Oulevey, Patric
AU - Derevyanko, Stanislav
AU - Silberberg, Yaron
N1 - Funding Information:
Acknowledgment. The authors thank R. Fischer, M. Segev, H. H. Sheinfux, and D. Gilboa for helpful discussions. The authors gratefully acknowledge funding from the ISF.
Publisher Copyright:
© 2017 Optical Society of America.
PY - 2017/9/20
Y1 - 2017/9/20
N2 - Wavefront shaping is a powerful technique that can be used to focus light through scattering media, which can be important for imaging through scattering samples such as tissue. This method is based on the assumption that the field at the output of the medium is a linear superposition of the modes traveling through different paths in the medium. However, when the scattering medium also exhibits nonlinearity, as may occur in multiphoton microscopy, this assumption is violated and the applicability of wavefront shaping becomes unclear. Here, using a simple model system with a scattering layer followed by a nonlinear layer, we show that with adaptive optimization of the wavefront, light can still be controlled and focused through a scattering medium in the presence of nonlinearity. Notably, we find that moderate positive nonlinearity can serve to significantly increase the focused fraction of power, whereas negative nonlinearity reduces it.
AB - Wavefront shaping is a powerful technique that can be used to focus light through scattering media, which can be important for imaging through scattering samples such as tissue. This method is based on the assumption that the field at the output of the medium is a linear superposition of the modes traveling through different paths in the medium. However, when the scattering medium also exhibits nonlinearity, as may occur in multiphoton microscopy, this assumption is violated and the applicability of wavefront shaping becomes unclear. Here, using a simple model system with a scattering layer followed by a nonlinear layer, we show that with adaptive optimization of the wavefront, light can still be controlled and focused through a scattering medium in the presence of nonlinearity. Notably, we find that moderate positive nonlinearity can serve to significantly increase the focused fraction of power, whereas negative nonlinearity reduces it.
KW - Nonlinear optics
KW - Speckle
KW - Turbid media
KW - Wavefront encoding
UR - http://www.scopus.com/inward/record.url?scp=85029830896&partnerID=8YFLogxK
U2 - 10.1364/OPTICA.4.001073
DO - 10.1364/OPTICA.4.001073
M3 - Article
AN - SCOPUS:85029830896
SN - 2334-2536
VL - 4
SP - 1073
EP - 1079
JO - Optica
JF - Optica
IS - 9
ER -